JP2021080158A - Hydraulic composition, method of applying hydraulic composition and kit using the same - Google Patents

Abstract

To provide a hydraulic composition that can be applied, e.g., to a small and medium-scale anchor element fixing work and an extensive crack repair work, that makes it possible to always prepare a curable paste of the same quality by uniformly mixing and kneading the hydraulic composition and water in a short period of time by a simple method, and that can be used to fix an anchor element in a drilling hole or repair a wide range of cracks using a hardening paste, as well as to provide a curable paste construction method using the same.SOLUTION: A hydraulic composition C1 comprises a hydraulic component containing Portland cement, alumina cement and a quick-setting agent; a viscosity regulator; a coagulation regulator; and a fine aggregate. A curable paste application method comprises a step of absorbing water W into the water-curable composition C1 to agglomerate it; a step of putting the agglomerate Ca into the cylinder cartridge 300; a step of discharging curable paste C2 which is a mixture of curable composition C1 and water W to the construction site; and a step of curing the curable paste C2.SELECTED DRAWING: Figure 1

Description

According to the present invention, anchor elements such as reinforcing bars and anchor bolts can be fixed to concrete skeletons and bedrock such as mortars, dam bodies, and buildings, crack repair, fixing of bricks, blocks or tiles, joint filling, and water leakage. Hydraulic composition used for water stoppage, ground improvement, cavity filling, surface decorative mortar coating, wall coating, or production or decoration of artifacts, curable paste using it. Regarding the construction method and the kit for curable paste construction.

Reinforcement work is underway to improve shear strength in order to increase seismic strength and durability of existing concrete man-made structures such as culverts, dams, tunnels and buildings. In addition, construction work is being carried out to attach structures such as rockfall protection nets and avalanche prevention fences to so-called stretched concrete that covers the slope and prevents it from collapsing. In these works, a cylindrical hole is formed in the concrete skeleton or bedrock that forms the concrete structure with a rotary tool such as a drill or an anchor bolting machine, a curable composition is put into the hole, and a reinforcing bar is added. And anchor elements such as anchor bolts are driven in and fixed.

As a curable composition used for such anchor element fixing work, a hydraulic composition containing cement is adopted. In the anchor element fixing work, this hydraulic composition is brought into contact with water to form a paste, and this curable paste is injected between the anchor element and the inner wall surface of the drilled hole, cured by curing, and then cured. Make it a thing. The amount of water relative to the hydraulic composition is predetermined and it is necessary to uniformly mix the two so that the cured product exhibits the desired strength. As a result, the anchor element is fixed to the concrete skeleton, and the shear strength of the existing concrete structure can be increased, or a workpiece can be attached to the existing concrete structure. Such anchor element fixing methods can be classified into a cartridge method and a pack method.

The cartridge method is a method in which water is poured into a water-hard composition contained in a hard cylinder cartridge to prepare a curable paste, and the pack method is a method in which the water-hard composition and water contained in a pouch container such as a bag are used. Is mixed in a pouch container to prepare a curable paste.

As a cartridge method, for example, in Patent Document 1, after injecting water from a discharge port into a hydraulic composition which is a cement-based composition powder previously stored in a cylinder having a discharge port at one end, the cylinder cartridge is picked up. The hydraulic composition and water are agitated by holding and shaking or mechanically vibrating this cylinder cartridge, and the highly fluid cement paste prepared thereby is extruded from the discharge port into the concrete structure. A method of injecting into a drilled hole and inserting an anchor element into the hole is described.

On the other hand, as a pack method, in Patent Document 2, the upper end portion of the pouch container in which the water-hard composition is stored in the upper storage portion of the pouch container divided into two by a partition and water is stored in the lower storage portion. After removing the partition by pulling the and the lower end, the water-hard composition is dropped into water, and then the pouch container is rubbed or shaken by hand, or the pouch container is vibrated by a machine to mix the two. Describes how to use the pouch container to prepare a curable paste. According to this method, since a large-scale kneading device is not required, it can be easily applied to the anchor element fixing work.

According to the cartridge method and the pack method, the cement paste filled in the hole has high fluidity, so the anchor element is manually driven into the hole in which the cement paste is injected without using a driving device. Can be crowded. In addition, since cement paste can be injected one after another into a large number of holes by an assembly line, it is possible to construct a large number of locations in a short time.

However, in the cartridge method described in Patent Document 1, when the operator overflows the water when injecting water from the discharge port, the amount of the injected water becomes unknown, and the required amount of water is added to the cement-based composition powder. Cannot be absorbed. Further, since the water is unevenly distributed on the discharge port side of the cement-based composition powder due to the water injection from the discharge port, it is necessary to shake and stir the cylinder cartridge together with the water injection so that both are uniform. If an inexperienced worker who is not familiar with the work holds the cylinder cartridge in his hand and shakes it, it can mix only incompletely when the agitation is insufficient, or it may entrain air excessively when the agitation is excessive. To do. Further, if such an operator takes time for the stirring operation, the cement paste reaches the start of condensation, loses fluidity, and cannot be injected into the drilling hole.

In addition, the water and the cement-based composition powder are separated, and the cement paste does not condense in the desired time, or the cured product thereof does not develop the desired strength. Therefore, the cement-based composition in the cylinder can no longer be used for fixing the anchor element, and must be discarded. Disposal of cement-based compositions due to such work mistakes causes wasteful costs and increases industrial waste.

Further, the pack method described in Patent Document 2 can accommodate only an amount that the partition can withstand the weight of the hydraulic composition, and the hydraulic composition in the pouch container is limited to a small amount, so that preparation is possible. The amount of curable paste is also limited to a small amount. Therefore, the anchor element fixing detention to which this pack method can be applied is limited to a small-scale construction site of, for example, two to three to ten locations.

On the other hand, curable compositions such as hydraulic compositions can be used for anchor element fixing work, repair of cracks in concrete structures, fixing of bricks, blocks and tiles, filling of joints thereof, and stopping of water leaks. It is also used for water, ground improvement, cavity filling, decorative mortar coating on the surface of buildings for interior and exterior, wall coating or production or decoration of artifacts. In this case, the curable paste prepared by mixing the curable composition and the liquid agent is applied to the crack repair location, the installation location of bricks, the joint filling location, the water leakage location, the ground / cavity construction location, and the crop construction location. Fill and cure.

Japanese Unexamined Patent Publication No. 2013-147883 Japanese Unexamined Patent Publication No. 2011-25424

The present invention has been made to solve the above problems, and is applicable to not only small-scale but also medium-scale anchor element fixing work and a wide range of crack repair work, and is a water-hard composition. By being able to uniformly mix and knead water and water in a short time by a simple method, it is possible to always prepare a curable paste of the same quality, and the curable paste can be used to fix the anchor element to the drilled hole or repair a wide range of cracks. It is an object of the present invention to provide a water-hardening composition used for applying the above, a curable paste construction method using the same, and a curable paste construction kit.

The hydraulic composition of the present invention made to achieve the above object includes a hydraulic component containing Portland cement, alumina cement, and a quick-setting agent, a viscosity modifier, a coagulation adjuster, and JIS G5901 ( It is characterized by including fine aggregate having a particle size classification of No. 4 to 8 in accordance with 2016).

This hydraulic composition is used, for example, for fixing anchor elements, repairing cracks, fixing bricks, blocks or tiles, filling joints, stopping water at leaks, improving the ground, filling cavities, and cosmetics on the surface. For mortar coating, wall coating, production of crops or decoration.

In this water-hard composition, the viscosity modifier is a cellulose derivative selected from, for example, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, and carboxymethyl cellulose; a natural polysaccharide derivative containing at least one of the cellulose derivatives; acrylamide; starch ether. It is a thickener containing at least one selected from; a polymer electrolyte;

In this water-hard composition, the coagulation modifier is at least one oxycarboxylic acid selected from, for example, citric acid, gluconic acid, tartrate acid, malic acid, salicylic acid, m-oxybenzoic acid, and p-oxybenzoic acid. It is said to be a setting time adjusting agent containing at least one of the salts; lignin sulfonic acid or salts thereof; sugar alcohols selected from sorbitol, pentitol, and hexitol; carbonates; silica;

This hydraulic composition comprises 20 to 60:30 to 70: 10 to 40: 0 of the Portland cement, the alumina cement, the rapid binder, the viscosity modifier, the coagulation modifier, and the fine aggregate. It is preferably contained in a mass ratio of 1 to 1.0: 1 to 10: 10 to 40.

This hydraulic composition preferably does not contain a delayed fluidizing agent.

In the method for applying a curable paste of the present invention, which has been made to achieve the above object, the water-curable composition is made into the water-hardness by contacting water with a fixing agent capsule enclosed in a water-permeable tubular container. The step of allowing the composition to absorb the water to agglomerate the water-hard composition, and the agglomerated water-hard composition is taken out from the water-permeable tubular container and has a cylinder tip at the tip and an opening at the base end. A step of inserting a lid that moves toward the cylinder tip in the cylinder cartridge in response to pressing after being put into the cylinder cartridge and a step of inserting the lid through the opening, and pressing the lid to extrude the water-hard composition from the cylinder tip. The present invention includes a step of discharging a curable paste in which the curable composition and the water are mixed to a construction site, and a step of curing the curable paste.

In this curable paste construction method, the step of discharging to the construction site includes a step of injecting into a hole made in the concrete skeleton, and the step of curing the hardened paste is while piercing the hardened paste. The anchor element may be fixed by having a process of inserting the anchor element into the hole.

In this curable paste construction method, the agglomerated hydraulic composition may be stirred and stirred in the cylinder cartridge, and the hydraulic composition may be dispersed to prepare the curable paste.

In this curable paste application method, a nozzle in which an injection tube with an injection amount instruction mark is fitted to the tip thereof is attached to the tip of the cylinder, and the injection tube is inserted into the drilled hole to form the hydraulic composition. The cylinder cartridge is moved in the direction of removing the injection tube from the drilling hole while injecting the injection amount, and when the injection amount indicating mark appears and disappears from the drilling hole, the injection of the water-hard composition is completed. Can be mentioned.

In this curable paste application method, the water and the fixing agent capsule are brought into contact with each other for 3 to 5 minutes.

This curable paste application method may include a step of cleaning the inner wall surface of the cylinder cartridge after the step of injecting.

In this curable paste application method, the water-permeable tubular container may contain paper.

Another method of applying the curable paste of the present invention is a pack having a bag containing the water-hard composition and a port for communicating the outside world and the inner space of the bag at the upper end edge thereof. By attaching the water-hardening composition and a cap that does not leak the water to the port and applying an external force to the pack, the water-hardening composition and the water are mixed. A step of preparing the curable paste and a step of crushing the bag body after removing the cap to extrude the curable paste from the port and discharge the curable paste from the port to a construction site. The step of curing the curable paste is provided.

In this curable paste construction method, the step of discharging to the construction site includes a step of injecting into a hole made in the concrete skeleton, and the step of curing the curable paste is the curable paste. The anchor element may be fixed by having a process of inserting the anchor element into the hole while piercing the hole.

In this curable paste construction method, it is preferable that the external force is a pressing force of an instrument and / or a human force.

In this curable paste application method, an injection connector in which an injection tube with an injection amount indication mark is fitted to the tip thereof is attached to the port, and the injection tube is inserted into the drilling hole to insert the curable paste. The pack is moved in the direction of removing the injection tube from the hole while injecting the paste, and when the injection amount indicator mark appears and disappears from the hole, the injection of the curable paste is completed. , More preferred.

In this curable paste application method, the curable paste is discharged to the tip of the injection tube, the injection tube is inserted into the hole, and the curable paste is injected while the injection tube is scraped. The pack is moved in the direction of removal from the hole, the injection tube itself is squeezed and pulled up, and when the injection amount indication mark appears and disappears from the hole, the injection of the curable paste is completed. It is even more preferable to have it.

It is even more preferable that this curable paste application method injects the curable paste from the inside of the pack and the inside from the pack to the injection amount instruction mark of the injection tube into the drilling hole.

In this curable paste application method, the water is poured into the pack after the spout nozzle of a bottle containing the required amount of water for curing the water-hard composition is fitted into the port. It may be something like that.

In this curable paste construction method, for example, 20 to 40 parts by mass of the water is added per 100 parts by mass of the hydraulic composition.

In the curable paste construction kit of the present invention, which has been made to achieve the above object, the bag body containing the water-hardening composition, the outside world, and the inner space of the bag body are set on the upper end side thereof. A pack having a port communicating with each other, a bottle containing or containing a necessary amount of water for curing the water-hard composition, and the water fitted in the port. It is attached to the spout of the bottle for pouring into the pack, or is provided with a spout nozzle to be attached.

This curable paste construction kit encloses the water-hard composition and / or a paste obtained by mixing the water-hard composition with the water, which can be screwed or fitted into the port. It is more preferable that the cap for the purpose and the injection connector which can be screwed or fitted to the port and which fits the injection tube with the injection amount indication mark at the tip portion are individually provided.

This curable paste construction kit is for fixing anchor elements, for example.

In this curable paste construction kit, for example, the bag body contains a maximum of 3000 g of the hydraulic composition.

The hydraulic composition of the present invention is used for applying a curable paste, particularly for fixing anchor elements, for repairing cracks, for fixing bricks, blocks or tiles or for filling joints, for stopping water at leaks, for improving the ground, etc. It is suitable for filling cavities, for coating cosmetic mortar on the surface, for wall coating, or for making or decorating crops. According to this hydraulic composition, by adding a predetermined amount of water, a curable paste having high fluidity that is easily mixed when kneaded, shaken, vibrated or kneaded can be prepared.

Since this hydraulic composition has a viscosity modifier, when it is made into a curable paste, it has an appropriate fluidity that is easy to be injected into a hole and an appropriate viscosity that does not flow out even if it is injected into an upward hole. And have. When this composition is used, the anchor element is hard to come off and can be firmly fixed. In addition, since this composition is highly versatile, it is used for repairing cracks in concrete structures, fixing tiles, bricks, and blocks, filling joints in them, stopping water at leaks, and improving the ground. Preparation of grout for civil engineering and construction work such as filling cavities, decorative mortar coating and wall coating on the surface for interior and exterior of buildings, mortar modeling for art work production and product decoration, etc. , Can be applied to various constructions and productions.

Since this hydraulic composition contains a coagulation adjuster, it prevents heat generation and prevents cracks during expansion and cooling, and it is difficult to cure until construction treatment, but it is injected quickly during curing. Will harden. In particular, when it is used for fixing an anchor element, it is difficult to cure until the curing is delayed and the curable paste is injected into the pores, but it is injected and rapidly cured during curing.

Further, since the obtained curable paste is a relatively coarse fine aggregate having a particle size classification of No. 4 to 8, especially when it is used for fixing an anchor element, unevenness on the inner surface which is a hole is formed. The unevenness of the anchor element makes it easier to get caught in the fine aggregate and presses it like a wedge to make it difficult for the anchor element to come off so that it can be firmly fixed.

The resulting curable paste can be easily injected into holes for anchoring anchor elements such as reinforcing bars and anchor bolts in concrete skeletons and bedrock such as culverts, dam bodies and buildings. Moreover, the anchor element can be manually driven into the hole into which the curable paste has been injected without using a driving device. In addition, since the curable paste can be injected one after another into a large number of holes by an assembly line, it is possible to construct a large number of locations in a short time. It also covers a wide range of areas such as crack repair, fixing or joint filling of bricks, blocks or tiles, water stoppage of leaks, ground improvement, filling of cavities, surface decorative mortar coating, wall coating, or production or decoration of crops. Alternatively, even when constructing a large volume, it can be performed in a short time.

According to the curable paste construction method of the present invention, specifically, the cartridge-type curable paste construction method, the fixing agent capsule in which the above-mentioned water-curable composition is sealed in a water-permeable tubular container is brought into contact with water. Only by the fact that the water-hardening composition absorbs the required amount of water evenly over the entire area without causing mistakes such as overflowing water or incorrect amount of water, and ensuring anchoring at the desired setting time. The element fixing method can be performed. Further, since the hydraulic composition absorbs water evenly, even an inexperienced worker who is not proficient in the stirring work of the water-hard composition can easily and surely perform the construction.

This curable paste application method has a simple process in which the water-hard composition aggregates due to water absorption, and by grasping it by hand, it is put into a cylinder cartridge having a discharge port, so no special procedure is required. Therefore, the construction anchor method can be performed after the uniform injection method without depending on the proficiency level of the worker. Therefore, the anchor element can always be fixed to the concrete skeleton with the desired strength.

When this curable paste application method includes a step of stirring and stirring the agglomerated water-hard composition in a cylinder cartridge, the agglomerated water-hard composition is uniformly dispersed and has appropriate fluidity. Since the curable paste having the above can be prepared, the extrusion resistance of the curable paste from the cylinder cartridge can be remarkably reduced, and the burden on the operator can be reduced.

In this curable paste application method, if the inner wall surface of the cylinder cartridge is cleaned after the process of injecting the water-hard composition is completed, the cylinder cartridge can be reused, so that waste reduction and cost can be achieved. Contributes to the reduction of

In this curable paste application method, if the water-permeable tubular container containing the water-hardening composition is easily destructible because it contains paper, it is possible to take out the aggregated water-hardening composition by hand. Since the simple operation of breaking this is sufficient and no tools are required, the operator can perform the construction smoothly.

According to the curable paste construction method of the present invention, specifically, the pack-type curable paste construction method, water is not stored in the pack in advance and the required amount is put into the pack at the time of use. Since it is not necessary to partition the rigid composition, the structure of the pack can be simplified, and there is no problem that the partitioning tool comes off or loosens during transportation or storage and the two come into contact with each other. In addition, since it is not necessary to handle the pack carefully so that the partition does not come off, it can be easily transported and stored. Further, without considering the load capacity of the partitioning tool, an appropriate amount of curable paste can be prepared by containing an amount of hydraulic composition according to the construction scale from small scale to medium scale in the pack.

In the curable paste construction method, a curable paste can be prepared by mixing a hydraulic composition and water by an extremely simple method of stepping on, kneading, or shaking the pack.

As for the curable paste application method, in both the cartridge method and the pack method, when the injection tube with the injection amount instruction mark is used, the operator removes the injection tube from the drilled hole in the concrete skeleton. The curable paste is injected while moving the cylinder cartridge or pack, and the injection is completed when the injection amount indication mark appears and disappears from the opening of the hole. The paste can be injected into the hole. As a result, in the step of inserting the anchor element into the hole in which the curable paste is injected, an excessive amount of the curable paste does not overflow from the opening of the hole, which is economical and waste can be reduced. Further, since the injection amount of the curable paste is not insufficient and it is not necessary to additionally inject the insufficient amount of the curable paste in a later step, the anchor element fixing work can be promptly proceeded.

Moreover, the presence of this injection amount indication mark is used as a mark to drill a hole in the curable paste between the inside of the cylinder cartridge or pack and the inside from the cylinder cartridge or pack to the injection amount instruction mark of the injection tube. Since the injection amount does not vary for each cylinder cartridge, each pack, and each operator, it becomes possible to inject a uniform amount into the drilling hole and repeat the uniform construction.

The management of making the discharge amount uniform is a big problem in the contractor and the construction industry, but it can be solved by this curable paste construction method. As a method of managing the discharge amount, it was determined that the discharge was completed when the injection amount instruction mark was attached to the hose, the pack was squeezed by hand and pulled up naturally, and the injection amount instruction mark appeared and disappeared from the opening of the hole. With such a method, the speed of pulling up varies from person to person, and markings appear and disappear from the openings of the holes, but it is not possible to guarantee that the holes contain a predetermined amount of curable paste. However, by adopting a method in which the curable paste is discharged to the tip of the injection tube in advance, the injection tube is inserted into the hole, and then the injection tube itself is squeezed and pulled up, the injection tube is used. Since only the amount of squeezed water enters the holes, a predetermined amount of curable paste can be put in, so that excellent discharge control can be performed.

Further, the curable paste construction kit of the present invention contains a pack containing a water-hardening composition and a predetermined amount of water stored in advance or emptied to the site to facilitate transportation, and a predetermined amount at the site at the time of use. If it has a bottle that houses the water and a spout nozzle that is pre-attached to the spout of the bottle to fit into the port and pour water into the pack, or is attached at the time of use, the curability described above. The paste application method can be applied easily, reliably, and in a short period of time.

In addition, this curable paste construction kit is an injection connector in which a cap for enclosing the contained water-hard composition and a paste mixed with water and an injection tube with an injection amount instruction mark are fitted to the tip. By making the port interchangeably screwable or matable, mixing and injection can be performed quickly and easily.

It is a perspective view explaining the first half process of the anchor element fixing method by an example (cartridge method) of the curable paste construction method using the water-hardening composition to which this invention is applied. It is a perspective view explaining the latter half process of the anchor element fixing method by an example (cartridge method) of the curable paste construction method using the water-hardening composition to which this invention is applied. It is a perspective view explaining the first half process of the anchor element fixing method by another example (pack method) of the curable paste kit which has the water-hardening composition to which this invention is applied, and the curable paste construction method using it. .. It is a perspective view explaining the middle process of the anchor element fixing method by another example (pack method) of the curable paste construction method to which this invention is applied. It is a schematic partial sectional view explaining the latter half process of the anchor element fixing method by another example (pack method) of the curable paste construction method to which this invention is applied. It was prepared using the graph showing the results of the tensile strength test of the anchor fixed to the concrete block using the hydraulic compositions of Example 1 and Comparative Example 1, and the hydraulic compositions of Example 1 and Comparative Example 1. It is a graph which shows the result of the linear expansion test of a hardened body.

Hereinafter, embodiments for carrying out the present invention will be described in detail, but the scope of the present invention is not limited to these embodiments.

An example of the hydraulic composition of the present invention and a curable paste construction method using the same, particularly a curable paste construction method by a cartridge method will be described in detail with reference to FIGS. 1 and 2.

First, the hydraulic composition of the present invention will be described. _{The hydraulic composition C 1} shown in FIG. 1 (a) is contained in a water-permeable tubular container 110, and contains a water-hard component containing Portland cement, alumina cement, and a quick-setting agent, and a viscosity modifier. , Condensation modifier and fine aggregate.

The content in the water-hard composition C ₁ is, in terms of mass ratio, Portland cement, alumina cement, quick-setting agent, viscosity modifier, coagulation adjuster, and fine aggregate from 20 to 60:30 to 70: 10-10. 40: 0.1 to 1.0: 1 to 10: 10 to 40, preferably 20 to 50:30 to 60:20 to 40: 0.1 to 0.8: 1 to 8: 10 to 30 It is more preferably 20 to 40:30 to 50:20 to 30: 0.1 to 0.5: 1 to 5: 15 to 30.

For example, when Portland cement is used as a reference, the amount of alumina cement: quick binder: viscosity modifier: coagulation adjuster: fine aggregate is 30 with respect to 20, 30, 40, 50, or 60 parts by mass of Portland cement. ~ 70: 10 to 40: 0.1 to 1.0: 1 to 10: 10 to 40 parts by mass, preferably 30 to 60:20 to 40: 0.1 to 0.8: 1 to 8 :. It is more preferably 10 to 30 parts by mass, and even more preferably 30 to 50:20 to 30: 0.1 to 0.5: 1 to 5: 15 to 30 parts by mass.

With respect to 30, 40, 50, 60, or 70 parts by mass of alumina cement, Portland cement: quick binder: viscosity modifier: coagulation adjuster: fine aggregate is 20 to 60 parts based on alumina cement. : 10 to 40: 0.1 to 1.0: 1 to 10: 10 to 40 parts by mass, preferably 20 to 50:20 to 40: 0.1 to 0.8: 1 to 8: 10 to It is more preferably 30 parts by mass, and even more preferably 20 to 40:20 to 30: 0.1 to 0.5: 1 to 5: 15 to 30 parts by mass.

With respect to 10, 20, 30, or 40 parts by mass of the quick-setting agent, Portland cement: alumina cement: viscosity modifier: coagulation adjuster: fine aggregate, 20 to 60: 30 to 70: 0.1 to 1.0: 1 to 10: 10 to 40 parts by mass, preferably 20 to 50:30 to 60: 0.1 to 0.8: 1 to 8: 10 to 30 It is more preferably parts by mass, and even more preferably 20 to 40:30 to 50:20 to 30: 0.1 to 0.5: 1 to 5: 15 to 30 parts by mass.

When the viscosity modifier is used as a reference, the viscosity modifier is 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, or Portland cement: Alumina cement: Rapid binder: Coagulation adjuster: Fine aggregate is 20 to 60:30 to 70: 10 to 40: 0.1 to 1.0: 1 to 10 parts by mass. : 10 to 40 parts by mass, more preferably 20 to 50:30 to 60:20 to 40: 1 to 8:10 to 30 parts by mass, 20 to 40:30 to 50:20 to 30 parts by mass. It is even more preferably 30: 0.1 to 0.5: 1 to 5: 15 to 30 parts by mass.

Based on the coagulation adjuster, Portland cement: alumina cement: quick binder: viscosity adjustment with respect to 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 parts by mass of the coagulation adjuster. Agent: The fine aggregate is preferably 20 to 60:30 to 70: 10 to 40: 0.1 to 1.0: 10 to 40 parts by mass, and 20 to 50:30 to 60:20 to 40: More preferably 0.1 to 0.8: 10 to 30 parts by mass, 20 to 40:30 to 50:20 to 30: 0.1 to 0.5: 1 to 5: 15 to 30 parts by mass. It is even more preferable to have.

When the fine aggregate is used as a reference, Portland cement: alumina cement: quick-setting agent: viscosity modifier: coagulation adjuster is 20 to 60:30 with respect to 10, 15, 20, or 30 parts by mass of the fine aggregate. ~ 70: 10-40: 0.1 to 1.0: 1 to 10 parts by mass, preferably 20 to 50:30 to 60:20 to 40: 0.1 to 0.8: 1 to 8 parts by mass. It is more preferably 20 to 40:30 to 50:20 to 30: 0.1 to 0.5: 1 to 5 parts by mass.

The fine aggregate reduces the shrinkage that occurs when the curable _{paste C 2} hardens after coagulation, and prevents the curable paste _{C 3} from cracking. In addition, the heat generated by the hydration reaction of the water-hard component is alleviated, _{the temperature rise of the curable paste C 2} is suppressed, and excessive increase in fluidity and extension of the setting time are prevented. Sands such as silica sand, river sand, sea sand, and crushed sand; inorganic materials such as alumina clinker, silica powder, and limestone; at least one selected from crushed urethane, EVA (ethylene vinyl acetate) foam, and crushed foamed resin. Of these, silica sand is preferable.

The fine aggregate preferably does not contain coarse particles of 1 mm or more. Specifically, the particle size classification according to Table 3 of JIS G5901 (2016) is preferably No. 4 to 8, more preferably No. 4 to 7, and even more preferably No. 4 to 6. .. When the particle size classification of the fine aggregate is within this range, coarse particles of 1 mm or more can be excluded. The specific particle size distribution in this particle size classification is 600 to 1180 μm for No. 4, 425 to 850 μm for No. 4.5, 300 to 600 μm for No. 5, 212 to 425 μm for No. 5.5, and 150 to 300 μm for No. 6. No. 6.5 is 106 to 212 μm, No. 7 is 75 to 150 μm, No. 7.5 is 53 to 106 μm, and No. 8 is 38 to 75 μm.

The particle size classification is determined by a mesh sieve having three kinds of nominal openings. The mass ratio of the fine aggregate on the surface of each mesh sieve to the total mass of the measured sample of the fine aggregate is preferably 70% by mass or more, more preferably 80% by mass or more, and 90% by mass or more. It is more preferable to have.

Further, in the hydraulic composition C ₁ , the fine aggregate is contained in an amount of 10 to 40 parts by mass, preferably 10 to 30 parts by mass, and more preferably 15 to 30 parts by mass. Fine aggregate is a content within this range, the entire hydraulic composition _{C 1} relative to the lower limit value 8-38 wt%, preferably between 8 to 25 wt%, the upper limit 27 to 67 wt%, preferably Is 27 to 33% by mass. Thus, fine aggregate is in fine particle size of less than 1.2 mm, and by a low content of 67 wt% at most in the hydraulic composition C _1, the hydraulic composition C ₁ Aggregation is not inhibited. When the particle size, content, and content of the fine aggregate exceed the above upper limit values, the water-hard component and the fine aggregate are separated during the construction using _{the curable paste C 2, and the cured product is formed.} C ₃ cannot exert the desired strength.

Viscosity modifiers are, for example, thickeners, more specifically methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, and carboxymethylcellulose, and natural polysaccharide derivatives that may contain at least one of these; acrylamide. Starch ether; polymer electrolytes. Any one of these may be used alone or in combination of two or more.

Examples of the viscosity modifier, which is such a thickener, include those commercially available as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, acrylamide, starch ether, and polymer electrolyte, and examples thereof include natural polysaccharide derivatives. ESAMID HP (manufactured by lamberti spa), STARVIS S 5514 F which is a mixture of recarboxylic acid ether and polyacrylamide, and STARVIS SE 35 F (both manufactured by BASF Japan Co., Ltd.) which is starch ether.

The polymer electrolyte is not particularly limited as long as it has a dissociating group in the main chain or the side chain of the polymer chain and dissociates in water to become a polymer ion. For example, a carboxyl group or an ammonium sulfonic acid. Inorganic acid salts such as groups, phosphoric acid, phosphite or salts thereof or aliphatic / aromatic or heterocyclic group-containing amino groups or their hydrochlorides or sulfates, organic acid salts / ammonium metal salts or alkaline soil. A hydrocarbon system having at least one of a dissociation group such as a salt such as a metal salt or a primary to quaternary ammonium group or an organic ammonium group, an ether group or an amino group-containing heterohydrogen system, an aromatic system. Ammonium having a heterocyclic, amide-based and / or organic acid-based polymer chain, specifically, alginic acid or a salt thereof in a natural product, pectin (polygalacturonic acid) or a salt thereof, carboxymethyl cellulose or a salt thereof. Examples thereof include salts, proteins and polypeptides, and examples of the synthetic polymer compound include polyacrylic acid or a salt thereof such as sodium polyacrylate, polystyrene sulfonic acid or a salt thereof such as sodium polystyrene sulfonate, poly (allylamine) or a salt thereof. The hydrochloride, quaternized poly (vinylpyridine) or a salt thereof, anionic polyacrylamide such as poly (acrylamide / sodium acrylate) copolymer and poly (ammonium-2-methyl-1-propanesulfonate), poly ( Anion group-containing cyclic repeating unit-containing polymers such as diallyldimethylammonium chloride), perfluoroalkyl sulfonic acid polymers such as Nafion (trade name manufactured by Sigma-Aldrich), semi-aromatic ammonium lonenes, alipha. Tick ammonium, heterocyclic ammonium lonenes, alkyl ether ammonium lonenes, free group-containing polymer compounds Specifically, STARVIS 308F (trade name manufactured by BASF Japan), Duramax and Tamol. , Romax, Dowex (both are trade names manufactured by Dow Chemical Co., Ltd.), Acusol, Acumer (both are trade names manufactured by Loam and Haas), and Dispex. And Magnafloc (both are trade names manufactured by BASF).

When the hydraulic composition C ₁ has a viscosity modifier, when the hydraulic composition C ₁ and water are mixed to form a curable paste, it has an appropriate fluidity that can be easily injected into the holes. By developing an appropriate viscosity that does not flow out even when injected into an upward drilling hole, it is possible to balance the two and adjust so that both effects can be exhibited. Moreover, since the curable paste exhibits excellent wettability due to the viscosity modifier, it adheres to the fine aggregate to increase the fluidity, and thereby the fine aggregate on the inner surface unevenness and the unevenness of the anchor element, which are holes. As a result, when a curable paste is injected into the hole and an anchor element such as a reinforcing bar is driven in, the anchor element becomes difficult to come off and can be firmly fixed. ..

In the water-hard composition C ₁ , the viscosity modifier, which is a thickener, is 0.1 to 1.0 parts by mass, preferably 0.1 to 0.8 parts by mass, and more preferably 0.1 to 0.5 parts by mass. It is included by mass. If the content exceeds this upper limit, _{the extrusion resistance from the curable paste C 2} pack 10 is remarkably increased, and the cured product C ₃ having sufficient strength cannot be obtained. On the other hand, if the content is less than the lower limit, _{the viscosity of the curable paste C 2} is insufficient.

In the water-hard composition C ₁ , the coagulation adjuster is, for example, a coagulation time adjuster, and adjusts the length of the coagulation time from the onset of condensation at _{which the curable paste C 2 loses fluidity to the end of coagulation at which curing begins.} The coagulation adjuster _{adsorbs to the particles of the water-hard component in the curable paste C 2} and coats the surface thereof, and suppresses the contact between the water-hard component and water. As a result, the hydration reaction of the water-hard component can be gradually promoted to prevent the _{curable paste C 2 from blinking.} Oxycarboxylic acids such as citric acid, gluconic acid, tartaric acid, malic acid, salicylic acid, m-oxybenzoic acid, and p-oxybenzoic acid, and salts thereof; inorganic carbonates; lignin sulfonic acid, as setting time modifiers. , Or salts thereof; sugar alcohols such as sorbitol, pentitol, and hexitol can be used, and one or more of these can be used. Caking time modifiers are alkali metal salts such as carbonic acid, lithium salts of oxycarboxylic acids and lignin sulfonic acids, potassium salts, and sodium salts, as well as alkaline earth metal salts such as magnesium salts and calcium salts. Of these, sodium citrate, lithium carbonate, potassium carbonate, and fumed silica (for example, Aerodil (trade name manufactured by Nippon Aerodil Co., Ltd.), which also serves as a strength enhancer) are preferable, and trisodium citrate and carbonate are preferable. A combination of any one or more of lithium and potassium carbonate is more preferable.

When this water-hardening composition contains a coagulation modifier, it prevents heat generation when mixed with water to prevent cracking during expansion and cooling or when the curable paste is cured, and at the same time, it cures. It is difficult to cure until the curable paste is injected into the pores with a delay, but it will be cured quickly during the injection and curing. It also eliminates the need for a delayed fluidizing agent.

In the hydraulic composition C ₁ , the coagulation adjuster, which is a coagulation time adjuster, is contained in an amount of 1 to 10 parts by mass, preferably 1 to 8 parts by mass, and more preferably 1 to 5 parts by mass. If the content exceeds this upper limit, the setting time becomes excessively long and, for example, the water-hard component and the fine aggregate are separated before reaching the end of setting. On the other hand, if the content is less than this lower limit, the hydration reaction of the water-hard component proceeds rapidly, and the curable paste C ₂ reaches the end immediately after the start of condensation and hardens, so that the cured product C ₃ cracks. As a result, the appearance is spoiled, and even if it is used as a water blocking material, water leaks from cracks.

The hydraulic component of the hydraulic composition C ₁ is M-type expansion cement containing Portland cement, alumina cement, and a quick-setting agent as essential. Portland cement contains silica (SiO ₂ ) and calcia (CaO) as main components, and examples thereof include those containing 20 to 25% by mass of silica and 60 to 70% by mass of calcia. In addition, alumina (Al ₂ O ₃ ), magnesia (Mg O), and iron oxide (Fe ₂ O ₃ ) are each contained in an amount of 1 to 6% by mass. These components exist, for example, as calcium silicate, calcium aluminates, and calcium aluminate ferrite.

Specific examples of Portland cement include ordinary Portland cement, early-strength Portland cement, ultra-early-strength Portland cement, moderate heat Portland cement, sulfate-resistant Portland cement, and white Portland cement. Among them, early-strength Portland cement is preferable. Only one type of these Portland cements may be used, or a plurality of types may be mixed and used. Portland cement is contained in the hydraulic composition C ₁ in an amount of 20 to 60 parts by mass, preferably 20 to 50 parts by mass, and more preferably 20 to 40 parts by mass.

Alumina cement is a special cement composed mainly of calcium aluminate _{(CaO · Al 2 O 3)} , for example, calcia 20-40 wt%, 40-80 wt% of alumina include those containing each .. In the hydraulic composition C ₁ , alumina cement is contained in an amount of 30 to 70 parts by mass, preferably 30 to 60 parts by mass, and more preferably 30 to 50 parts by mass.

Portland cement and alumina cement are fine powders of cement powder, and the average particle size thereof is preferably 10 to 50 μm, more preferably 20 to 40 μm, and 20 to 40 μm. It is even more preferable that the thickness is 30 μm. The average particle size refers to a volume-based distribution obtained by a laser diffraction / scattering method. Examples of such an average particle size measuring device include a Shimadzu laser diffraction type particle size distribution measuring device SALD-3100-WJA1: V1.00 (manufactured by Shimadzu Corporation). When the cement powder is such a fine powder, chemical agglomeration due to hydration of the cement powder due to water absorption and physical agglomeration due to the surface potential of the cement powder are likely to occur. As a result, chemical aggregation or physical aggregation, or by both the synergistic effect, for example, curable paste C ₂ injected into cracks occurring in the ceiling and walls of the concrete structure is hardly omissions therefrom.

Examples of the quick-setting agent include sulfates such as sodium sulfate, potassium sulfate, aluminum sulfate, and calcium sulfate, and one or more of these can be used. As calcium sulfate, anhydrous gypsum (CaSO _4), hemihydrate gypsum _{(CaSO 4 · 1 / 2H 2} O), gypsum such as gypsum _(CaSO 4 · _2H 2 O) is increased production of which will be described later ettringite It is preferable from the viewpoint of making it. These quick-setting agents may be used alone or in admixture of a plurality of types. In the hydraulic composition C ₁ , the quick-setting admixture is contained in an amount of 10 to 40 parts by mass, preferably 20 to 40 parts by mass, and more preferably 20 to 30 parts by mass.

The hydraulic composition C ₁ preferably does not contain a delayed fluidizing agent. However, it may contain a strength enhancer. The strength enhancer is silica fume which is silica fine particles, silica powder such as blast furnace slag powder and / or fly ash, and kaolin (caolin containing silica and alumina, calcined kaolin, etc.). Delayed fluidizing agents are sulfonic acid-based fluidizations such as naphthalene sulfonic acid formalin condensate, melamine sulfonic acid formalin condensate, aromatic sulfonic acid formalin condensate, polystyrene sulfonic acid, lignin sulfonic acid, and salts thereof. Agents; carboxylic acid-based fluidizing agents such as polycarboxylic acids and salts thereof.

With the passage of time, the curable paste C ₂ undergoes a hydration reaction to condense the hydraulic component, and then cures. Specifically calcium aluminate in an alumina cement, gypsum, and the reaction proceeds in water to form ettringite is calcium aluminate sulphate hydrate _{(3CaO · Al 2 O 3 ·} 3CaSO 4 · 32H 2 O). Furthermore, when gypsum, which is a quick-setting agent, is consumed, ettringite reacts with calcium aluminates (aluminate phase) in alumina cement to produce monosulfate hydrate. Calcium sulphoaluminate hydrates such as ettringite and monosulfate hydrates are bulky, water-insoluble needle-like crystals, and as they grow, the curable paste C ₂ expands and condenses. And gradually cure. Moreover gypsum is quick-setting admixture is, increase the production of ettringite become a source of calcium sulfate to form a cured body C ₃ of high strength.

The curable paste C ₂ contains calcium hydroxide (Ca (OH) ₂ ) in which calcia in alumina cement is dissolved in water. Silica fume and kaolin contained in the strength enhancer cause a so-called pozzolan reaction with this calcium hydroxide to form a hydrate insoluble in water. Thus, for example, calcium silicate hydrate _{(3CaO · 2SiO 2 · 3H 2} O) and, is fine and dense crystals of calcium aluminate hydrates _{(3CaO · Al 2 O 3 ·} 6H 2 O) to generate , Curable paste is cured with high strength. In particular, compared to blast furnace slag that is pulverized by crushing and fly ash that has a relatively large spherical shape due to coal ash, the calcined kaolin particles are finer and therefore have a larger surface area per unit mass. There is. Therefore, silica fume and calcined kaolin compared to other siliceous powder, because it has a much higher pozzolanic activity, to produce crystals of dense hydrate, imparts high compressive strength by curing body C _3.

As described above, the hydraulic composition C ₁ contains an alumina cement, a quick-setting agent such as gypsum, and a strength enhancer containing kaolin as a main component, so that the cured product C ₃ thereof is the number after construction. It develops early strength, which is that it develops high strength in about an hour to one day.

In parallel to the generation and pozzolanic reaction of ettringite proceeds hydration reaction of calcium silicate in the Portland cement, cured product C ₃ calcium silicate hydrates, such as tobermorite crystals form. As a result, the hydration reaction of calcium silicate is slower than that of calcium aluminates, so that Portland cement is excellent in maintaining high strength for a long period of time after, for example, 7 days to several months after construction.

As described above, the hydraulic composition C ₁ contains Portland cement, alumina cement, a quick-setting agent, a strength enhancer, a fine aggregate, a setting time adjusting agent, and a viscosity adjusting agent, and these have a composition in a certain range. By combining the ratios, it is possible to prolong the time until the onset of condensation and give the worker sufficient time for construction. As a result, even an unfamiliar worker can fix the tiles, fill the joints, and the like with a margin.

The compressive strength of the cured product C ₃ obtained from the water-hard composition C ₁ ^{(according to JIS A1108 (2006)) reached 55 N / mm 2} only one day after construction at a curing temperature of 20 to 25 ° C., 7 be improved to 80N / mm ² to 65N / ^mm 2, 28 days after the later day.

The curable paste C ₂ shows a flow value of 40 to 90 seconds (based on the fluidity test method (J14 funnel test) of JSCE-F 541-2013 filled mortar specified in the concrete standard specification). In addition, it shows high fluidity in a flow test (based on JIS R5201 (2015)). _{Therefore, the operator can extrude the curable paste C 2} from the bag 11 by hand 31 or 32 without requiring much force, _{or the cured body C 3} is required to have relatively high strength, for example. It can be suitably used for construction grout.

The hydraulic composition C ₁ may further contain a thickener in addition to a strength enhancer such as silica fine particles exhibiting a thickening effect. The thickener exhibits a thickening effect like a binder that binds the particles of the water-hard component to each other. Further, by applying an appropriate viscosity to the curable paste C _2, prevents separation of the water by sedimentation separation or hydraulic components by the difference in specific gravity of the hydraulic components with each other in the curable paste C _2. As a result _{, uniform dispersion of particles in the curable paste C 2} is promoted, and extrusion resistance from the pack 10 is reduced. Further, since the curable paste C ₂ expresses thixotropy by the thickener, its viscosity is improved and the fluidity is reduced when the external force is removed. As a result, for example, when it is used for mortar modeling for decorating a vertical wall surface, the curable paste C ₂ does not drip, so that good workability is exhibited.

As the curable composition, a hydraulic composition containing cement was exemplified, but as another hydraulic composition, hydraulic slag (blast furnace granulated slag), hydraulic lime (CaO / SiO ₂ containing slaked lime), gypsum, etc. Examples of curable pastes prepared by mixing with water, such as starch, protein, and hydraulic urethane (for example, Ortac Act manufactured by Tajima Roofing Co., Ltd. (“Altac” is a registered trademark)), are listed. Can be done. The curable composition is not limited to the hydraulic composition, and may be bisphenol A that reacts with epichlorohydrin and cures to produce polycarbonate.

Next, a cartridge-type curable paste application method using the above hydraulic composition will be described.

The anchor element fixing method using the cartridge type curable paste application method is shown in FIGS. 1 and 2. FIG. 1 shows an example of the first half step of the anchor element fixing method using the curable paste construction method by the cartridge method. FIG 1 fixer capsule 100 shown in (a), and a water permeable cylindrical container 110 powdered hydraulic composition enclosed thereto and C _1. The fixing agent capsule 100 has a substantially cylindrical shape having narrowed ends. The water-permeable tubular container 110 is made of a non-woven sheet, which is composed of, for example, paper and resin fibers, and has good water permeability and fragility.

The water-permeable tubular container 110 is preferably made of a non-woven sheet having high water permeability and easy crushability. Examples of such non-woven sheets include papers such as high-quality paper, medium-quality paper, kraft paper, Kent paper, imitation paper, crepe paper, Heatron paper, cone paper, and Japanese paper. As these raw materials, any one of wood pulp such as pulp made from coniferous tree and pulp made from broadleaf tree, non-wood pulp such as Mitsumata, Walla, Bagasse, Yoshi, Kenaf, and Kwa, and used paper pulp is used. It may be formed by mixing a plurality of them. Further, the paper may be a synthetic fiber paper such as rayon paper or acetate paper.

The non-woven sheet may contain a resin in addition to the paper. Without easily broken at the time and construction transportation and storage According thereto, the hydraulic composition C ₁ is not leaking the contents thereof. Such resins include, for example, polyolefin resins such as polyethylene and polypropylene; polyester resins such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, and polytributylene terephthalate; polyamides such as nylon 6, nylon 66 and aramid. Resin: Polyacrylic resin containing acrylonitrile as a main component can be mentioned.

As shown in FIG. 1A, water W is stored in the tray 200. Water W is preferably tap water because it can be easily obtained at the construction site. The temperature of the water W is preferably 5 to 30 ° C, more preferably 15 to 25 ° C. If the temperature of the water W exceeds this upper limit, the pot life of the curable paste C ₂ becomes extremely short, and the setting end point is reached before the completion of the curable paste application method (see FIG. 2). On the other hand, if this temperature is less than the lower limit, _{the curing time of the cured product C 3} which is the cured product of the curable _{paste C 2} is prolonged (see FIG. 2 (f)), and the strength thereof is lowered. Or The fixing agent capsule 100 in the water W immersed, to absorb the water W in the hydraulic composition C _1. Water W is intruding into powdery hydraulic composition C ₁ through the permeable cylindrical container 110. When water W _{enters between the particles of the hydraulic component contained in the hydraulic composition C 1} , they adhere to each other. As a result, the hydraulic composition C ₁ aggregates.

The length L from the tip end portion to the base end portion of the fixing agent capsule 100 is, for example, 100 to 400 mm, specifically 200 to 400 mm, more preferably 200 to 350 mm, and 200 to 300 mm. It is more preferably 250 to 300 mm, and even more preferably 250 to 300 mm. The diameter D at this time is, for example, 10 to 40 mm, specifically 20 to 40 mm, more preferably 20 to 35 mm, and even more preferably 30 to 35 mm. When the length L is within this range, the fixing agent capsule 100 can be easily stored and transported, and the water-permeable tubular container 110 is provided with good handleability and is bent when handled by hand. Damage can be prevented.

Further, by changing the value of the diameter D, the time _{required for the hydraulic composition C 1} to absorb the required amount of water W, that is, the immersion time in the water W can be changed. When the diameter D is within the above range, the immersion time can be as short as 5 minutes or less, specifically 3 to 5 minutes, and even with such a short immersion time, a water absorption rate of 25 to 32% by mass can be obtained. Obtainable. The water absorption rate is expressed as a percentage obtained by dividing the weight before immersion in water by the weight after immersion. Required amount of water W is hydraulic composition C ₁ is the upper limit amount of water W can absorb. Therefore, even if the fixing agent capsule 100 is immersed in water W beyond this immersion time, the hydraulic composition C ₁ does not absorb water W in excess of the required amount. Further, at least after the above immersion time has passed, the amount of water W absorbed is not insufficient. Moreover, as the water injection into the cylinder cartridge containing a hydraulic composition, a hydraulic composition without causing uneven distribution of water, can be contacted evenly water W in the hydraulic composition C _1.

The fixing agent capsule 100 is taken out from the water W. Permeable cylindrical container 110, because it contains resin fibers, also be water wet it retains strength that can be handled by hand while not omissions the hydraulic composition C _1. As shown in FIG. 1 (b), one end of the fixing agent capsule 100 breaks part of the water-permeable cylindrical container 110, as further exposed aggregate Ca hydraulic composition C _1, toward the other end The water-permeable tubular container 110 is rolled and torn to remove it. As a result, the aggregate Ca is taken out from the water-permeable tubular container 110. Since the agglomerate Ca is solidified as if pseudo-condensation has occurred, it can maintain a substantially cylindrical shape even though the water-permeable tubular container 110 has been removed. Therefore, the aggregate Ca can be grasped and handled by hand.

The cylinder cartridge 300 shown in FIG. 1B has a cylinder 320 having a cylindrical shape and an opening 330 at the base end, and a cylinder tip 310 protruding from the opening 330 at the tip of the cylinder 320. have. The cylinder tip 310 is connected to the inner air of the cylinder 320, and communicates the inner air of the cylinder 320 with the outside world. A male screw is provided on the outer peripheral surface of the cylinder tip 310, and a cap 310a having a female screw on the inner peripheral surface is screwed with the male screw of the cylinder tip 310. The aggregate Ca taken out from the water-permeable tubular container 110 is inserted into the tubular body 320 through the opening 330.

FIG. 1 (c) shows the stirring step of the aggregate Ca. The stirrer 400 is connected to a rotary rod 420 having two stirring blades 430 protruding from the tip portion and the base end of the rotary rod 420, and the rotary rod 420 is connected to the rotary rod 420 together with the stirring blade 430 around the central axis of the rotary rod 420. It has a rotary tool 410 that rotates to. The stirring blade 430 has an oval-shaped plate portion 430b having two linear sides facing each other and two arcuate sides connecting one end and the other end of the two sides, and the two arcuate sides. The protruding portion 430d protruding along the arc, the opening 430a opened point-symmetrically by the plate portion 430b, and the tongue piece portion 430c partially connected to the opening 430a and protruding in the direction away from the protruding portion 430d. And have. The stirring blade 430 is fixed to the rotating rod 420 penetrating the center of the plate portion 430b sandwiching the opening 430a by welding. The two stirring blades 430 are fixed in series to the rotating rod 420 so that the tongue pieces 430c face each other and intersect with each other.

The stirring blade 430 is inserted into the cylinder 320 together with the rotating rod 420. When the rotary tool 410 is operated, the rotary rod 420 and the stirring blade 430 rotate. The aggregate Ca in the cylinder cartridge 300 comes into contact with the stirring blade 430 and is stirred and stirred. The stirring time is preferably 5 to 60 seconds, more preferably 20 to 60 seconds, and even more preferably 20 to 40 seconds. Note that when stirring the aggregate Ca and curing paste C2, as curable paste C ₂ from the opening 330 does not omissions, an opening 330 upward, the cylinder cartridge 300 vertically the cylindrical tip 310 toward respective downwardly fixed You may.

Agitated by the particle aggregates Ca that has been aggregated by the uniformly dispersed, agglomerates Ca changes the curable paste C ₂ shown in FIG. 1 (d). The curable paste C ₂ has fluidity. By preliminarily converting the agglomerate Ca into the curable paste C _{2 , the extrusion resistance when the curable paste C 2} is extruded from the cylinder cartridge 300 and injected into the drilling hole (see FIG. 2C) is reduced. It can be significantly reduced compared to extruding as it is, and the burden on the operator can be reduced.

Next, as shown in FIG. 1D, a lid 340 having a disk shape slightly smaller than the inner diameter of the tubular body 320 and the opening 330 is fitted into the opening 330. The lid body 340 can move in the cylinder body 320 in response to the pressing toward the cylinder tip 310. Next, the injection tube 310c is connected to the nozzle 310b, which has the same female screw as the cap 310a on the base end side and a discharge port opened at the tip, respectively. The injection tube 310c and the tip of the nozzle 310b that gradually narrows toward the discharge port are fastened and fixed with the fastener 310d. A vinyl tape is wrapped and attached to the middle of the injection tube 310c to form an injection amount indication mark 310e. The injection volume indication marks 310e, the curable paste C ₂ in an amount that satisfies the difference between the insertion portion of the volume of the anchor element is inserted drilled volume bored and there the concrete skeleton such as Zhang concrete cutting It is attached at a position where it is exposed from the opening of the drilled hole when it is injected into the hole (see FIG. 2 (d)). Further, the cap 310a is removed, and the nozzle 310b to which the injection tube 310c is connected is screwed and attached to the cylinder tip 310.

The injection gun 500 shown in FIG. 1 (e) has a curved eaves shape having a diameter slightly larger than that of the cylinder 320 of the cylinder cartridge 300, and has a cylinder support portion 520 that supports the cylinder 320. On the tip side support portion 510 that stands at the tip of the cylinder support portion 520 and supports the tip side of the cylinder 320, the base end portion 550 provided at the base end of the cylinder support portion 520, and the base end portion 550. A fixed operation part 540, a piston 530 that can move between the tip side support part 510 and the base end part 550 on the cylinder support part 520, and a base end part 550 and an operation part that are connected to the piston 530 at one end. It has a delivery rod 560 that penetrates 540, extends beyond it, and is curved so as to fold back at the other end.

The tip side support portion 510 has two claws so that the cylinder cartridge 300 can be supported by contacting the tip side of the cylinder body 320 without contacting the cylinder tip 310. The operation unit 540 has a grip portion 540b that is gripped by the palm and thumb of the operator, and a trigger 540a on which a finger other than the thumb of the operator is hung. The trigger 540a and the delivery rod 560 are connected via, for example, a ratchet mechanism. When the trigger 540a is pulled and moves to the grip portion 540b side, the delivery rod 560 is sent out toward the tip end side support portion 510, and the piston 530 moves on the tubular body support portion 520. The piston 530 has a disk shape with a diameter smaller than that of the cylinder 320 and the opening 330 so that the cylinder cartridge 300 set in the injection gun 500 can move into the cylinder 320 from the opening 330 and press the lid 340. There is.

The lid 340 is fitted into the opening 330, and the delivery rod 560 is pulled in a direction away from the tip end side support portion 510 to move the piston 53 toward the base end portion 550 side. The cylinder cartridge 300 is set in the injection gun 500 so that the cylinder tip 310 protrudes between the two claws of the tip side support portion 510. Next, the trigger 540a is pulled a plurality of times to move the piston 530 toward the tip end side support portion 510 side until the piston 530 abuts on the lid body 340.

The injection gun 500 is connected to a compressor (not shown) that generates compressed air, and the compressed air may deliver the rod 560 in response to the operation of the trigger 540a. According to this, the burden on the operator who operates the trigger 540a can be reduced.

FIG. 2 shows an example of the latter half step of the anchor element fixing method using the cartridge type curable paste construction method. The figure shows the process of attaching the columns for fixing the rockfall protection net to the stretched concrete by the cartridge type curable paste construction method.

The upholstered concrete 61 shown in FIG. 2A is formed by concrete upholstery on the slope 62, and covers the slope 62 with a substantially uniform thickness. Therefore, the surface 61a of the upholstered concrete 61 is inclined. The operator sets the core boring machine 71 on the surface 61a and rotates the core drill 71a attached to the tip of the core boring machine 71 to form a cylindrical hole 61b.

As shown in FIG. 2B, the operator inserts the injection tube 310c into the hole 61b until _{the tip of the injection tube 310c contacts the bottom surface 61b 1 of the hole 61b.} The operator then pulls the trigger 540a, as shown in FIG. The curable paste C ₂ is extruded and injected into the drilled hole 61b from the injection tube 310c. At this time, the operator gradually moves the injection gun 500 together with the cylinder cartridge 300 in the direction X in which the injection gun 500 separates from the opening of the drilling hole 61b, while gradually moving the tip of the injection tube 310c and the liquid of the _{curable paste C 2.} Continue injecting the _{curable paste C 2} while keeping it in contact with the surface. As a result, as _{the injection amount of the curable paste C 2} increases in the drilling hole 61b, the injection tube 310c moves in the direction of being removed from the drilling hole 61b. Further, the operator can sense the pressure of the _{curable paste C 2} generated when the liquid level of the curable paste C ₂ moves toward the opening of the drilling hole 61b. Thereby, the operator can recognize the smooth injection of the curable paste C _2. When the operator continues this work, as shown in FIG. 3D, the injection amount instruction mark 310e appears and disappears at the opening of the drilling hole 61b. When the operator visually confirms that the injection amount instruction mark 310e appears and disappears at the opening of the drilling hole 61b, the trigger 540a is returned to end the injection. Thus the operator, at the injection step of the curable paste C _2, only by performing a simple task simple that watch the opening of the drilling 61b while moving the delivery gun 500, the space volume of the anchor element it is possible to perform the injection of the curable paste C ₂ leaving a the drilling 61b. As a result, when the anchor element is inserted into the drilling hole 61b, it is possible to prevent the uneconomical _{situation that a large amount of the curable paste C 2 overflows from the opening of the drilling hole 61b.}

As described above, the injection tube 310c is provided with the injection amount indication mark 310e, and by performing the injection step as described above, the operator drills an appropriate amount of the curable paste C ₂ in just proportion. It can be injected into 61b. In particular, when the anchor bolt 81, which is an anchor element, is inserted into the hole 61b after the injection step of the curable paste C _{2 (see FIG. 2E), the curable paste C 2} is over-injected. Construction defects due to waste such as a large amount of curable paste C ₂ overflowing from the drilled holes 61b and insufficient injection are prevented. Further, by simple management of only visually observing the injection amount instruction mark 310e, for example, _{the amount of the curable paste C 2} required for one drilling hole 61b can be grasped, and the filling can be injected / filled per cylinder cartridge. The number of holes 61b can be determined.

FIG. 2 (e) shows the driving process of the anchor element. The anchor bolt 81, which is an anchor element, has a long substantially cylindrical shape, and has a base end (see the figure (f)) having a plane substantially perpendicular to the central axis thereof, and the base end. It has a tip that has an elliptical surface due to its inclination with respect to the surface. Whereby the tip of the anchor bolt 81 is sharply pointed, easily inserted into the drilled 61b filled with a curable paste C _2. A plurality of ribs 81a protrude from the tip to the middle of the anchor bolt 81. A male screw 81b is provided on the surface of the base end portion of the anchor bolt 81. A nut 83 for fixing the support of the rockfall protection net is screwed into the male screw 81b (see the figure (f)). The total length of the anchor bolt 81 satisfies the anchor bolt fixing length specified in the standard, and the drilling 61b is drilled so that the male screw 81b protrudes from the opening of the drilling 61b when driven into the drilling 61b. It is longer than the hole length (depth).

The operator holds the proximal end of the anchor bolt 81 by hand 31, curable with the paste C ₂ is rotated so that air is not mixed around the center axis of the anchor bolt 81, in drilling 61b curable paste Insert it into C _2. With the curable paste C ₂ having moderate fluidity and the sharp tip of the anchor bolt 81, the operator does not need much force to scrape the anchor bolt 81 filled _{with the curable paste C 2.} It can be driven into the hole 61b. Operator performs this step to the curable in paste C ₂ of initial setting up of the time at which usable time from the time of water absorption completion of the curing paste C _2. If the pot life is overdue, the fluidity of the curable paste C2 that has reached the start of condensation is gradually lost, and the driving resistance of the anchor bolt 81 increases, which can be manually driven by the hand 31. It will be difficult.

The operator supports the anchor bolt 81 in the drilled hole 61b by hand 90 so as to have a predetermined angle. _{Since the curable paste C 2} that has reached the end of condensation starts to cure, the anchor bolt 81 is fixed in the drilled hole 61b without the support of an operator and while maintaining a predetermined angle. The operator removes the _{slightly overflowing curable paste C 2} from the drilling 61b, if necessary.

The upholstered concrete 61 that has undergone the steps shown in FIGS. 2 (a) to 2 (e) is shown in FIG. 2 (f). The cured _{body C 3} produced by curing the curable _{paste C 2} closes the opening of the hole 61b and is densely filled between the inner wall surface of the hole 61b and the anchor bolt 81. The anchor bolt 81 is fixed to the upholstered concrete 61, and the nut 83 is screwed into the male screw 81b at the base end portion thereof to fix the support column 82. Anchor bolt 81 by the anchor effect of the ribs 81a is to improve the pull-out strength of the cured body C _3.

Thus, according to the curable paste construction method according cartridge system using a hydraulic composition of the present invention, a fixing agent capsule 100 just immersed predetermined time in water W, requirements to the hydraulic composition C ₁ Since the water W can be absorbed, it is not necessary to inject water into the cartridge, which may cause water overflow or measurement error, or to shake the cartridge after water injection. As a result, even an unfamiliar worker can easily and surely perform the work, so that uniform construction can be performed, construction management can be simplified, and construction efficiency can be improved.

As a result, the operator does not have to strictly control the immersion time of the fixing agent capsule 100 in water W, and also from the step of removing the water-permeable tubular container 110 of the fixing agent capsule 100 (see FIG. 1B). The process of inserting the anchor bolt 81 into the hole 61b (see FIG. 2E) can be reliably performed with a sufficient time.

After the injection step of the curable paste C _{2 is completed and the curable paste C 2} in the cylinder 320 of the cylinder cartridge 300 is completely discharged from the injection tube 310c and the inside of the cylinder 320 becomes empty, the cylinder The step of cleaning the inner wall surface of the body 320 may be performed. In this case, it is preferable that the piston 530 of the injection gun 500 also serves as the lid 340. According to this, the inner wall of the tubular body 320 can be cleaned after the operator pulls the delivery rod 560 to take out the piston 530 (lid body 340) from the opening 330 (see FIGS. 1D and 1E). Further, this cleaning is preferably performed after removing the nozzle 310b from the cylinder 320. Further, it is more preferable to loosen the fastener 310d, remove the injection tube 310c from the nozzle 310b, and clean the nozzle 310b and the injection tube 310c as well. In this cleaning step, the curable paste C ₂ may be scraped off with water or a brush. According to the cleaning step, the cylinder 310, the nozzle 310b, and the injection tube 310c can be reused without being thrown away, which contributes to reduction of waste and construction cost. This cleaning step may _{be performed immediately after the injection step of the curable paste C 2} or after the completion of the subsequent insertion step of the anchor bolt 81.

Further, the tip of the anchor element may have a so-called shredded shape, a pyramid shape, a conical shape, or a hemispherical shape having a surface parallel to the base end surface of the anchor element, and the tip portions of the anchor element face each other. It may have a so-called double-sided cut shape in which two slopes formed extending from the arc in the extension direction of the tip thereof share a side facing the arc, and it may be formed from the arcs facing each other at the tip of the anchor element. It may have a so-called tip bifurcated shape in which two slopes formed extending in the direction of the base end of the arc share a side facing the arc.

The fixing agent capsule 100 immersed in water W for a predetermined time may be taken out from the fixing agent capsule 100 and inserted into the hole as it is. When the fixing agent capsule 100 after water absorption is inserted into the hole, and then the anchor bolt is inserted into the hole while hitting the base end of the pointed anchor bolt, the water-permeable tubular container 110 is opened. It is pierced and the curable paste C ₂ flows out into the drilled holes. Anchor bolts, traveling in drilling while pushing the curable paste C _2. The cured _{product C 3} produced by curing the curable _{paste C 2} closes the opening of the drilled hole and densely fills the space between the inner wall surface of the drilled hole and the anchor bolt.

Further, another example of the curable paste construction method of the present invention, specifically, a pack-type curable paste construction method and a curable paste construction kit used therein will be described with reference to FIGS. 3 to 5.

The anchor element fixing method using the pack type curable paste application method is shown in FIGS. 3 to 5. FIG. 3 shows the first half process of the anchor element fixing method using the curable paste construction method by the pack method. As shown in FIG. 3 (a), the curable paste construction method according pack method, pack 10 which houses only hydraulic composition C ₁ is a powder containing cement as a curable composition bag 11 If, hydraulic composition curable paste construction kit 1 and a bottle 21 is a container of water W containing a C ₁ as a solution required for curing is used. The hydraulic composition C _{1 changes into a curable paste C 2} (see FIG. 4 (b)) by being mixed after contacting with water W, and further undergoes a hydration reaction to condense and harden to be a cured product. Generate C ₃ (see FIG. 5 (f)).

The pack 10 is fixed to a bag body 11 having a welding band 11a in which films having substantially rectangular shapes are welded to each other in a band shape having a constant width at their peripheral edges, and an upper end side portion 11a ₁ of the bag body 11. It has a port 12 that has been formed. The port 12 has a tubular portion 12a that communicates the inner air of the bag body 11 with the outside world, and a base portion 12b that is _{connected to the base of the tubular portion 12a and welded to the upper end side portion 11a 1.} A male screw is provided on the outer surface of the tubular portion 12a (see FIG. 3C), and is screwed with a female screw on the inner surface of the cap 13. As a result, the cap 13 is attached to the tubular portion 12a.

In the bag body 11, the length of the upper end side portion 11a ₁ having the port 12 and the lower end side portion 11a ₃ facing the port 12 is preferably shorter than the length of the side side portion 11a _{2 of the bag body 11.} Specifically, the outer dimensions of the bag body 11 are such that _{the length (width) of the upper end side portion 11a 1} and the lower end side portion 11a ₃ is preferably 50 to 300 mm, more preferably 100 to 250 mm. It is even more preferably 100 to 200 mm. The length (vertical length) of the side side portion 11a ₂ is preferably 100 to 500 mm, preferably 250 to 500 mm, further preferably 250 to 400 mm, and more preferably 300 to 400 mm. Even more preferable. External dimensions of the bag 11, determined according to the amount of these in the range, the water W injected amount of hydraulic composition C ₁ to accommodate the (mass and volume) in the bag 11 (mass and volume) Will be done. Incidentally, when upright bag 11, the upper end surface of the leveled flat hydraulic composition _{C 1} is lower sides 11a ₃ Towards the middle of the upper side portion 11a ₁ and the lower side portion 11a _3, i.e. the bag It is preferably located in the lower half of the vertical direction of 11.

Further, the mass hydraulic composition _{C 1} contained in the pouch 11 is 100 to 3000 g. The accommodating amount may be during this period, and can be appropriately selected depending on the number of construction sites and the thickness and length of the anchor element to be fixed, such as a little less than 300 g, 500 g, 1000 g, 1500 g, 2000 g, and 2500 g. When the mass of the water-hard composition C _{1 contained in the bag 11 exceeds 3000 g, the curable paste C 2} prepared by adding water W to the water-hard composition C ₁ as described later (FIG. 5). (B) to (d)) become too heavy, and the workability by human hands is reduced.

For example, the weight of the water-hard composition C ₁ contained in the bag 11 is preferably 100 to 2000 g, but if it still exceeds 500 g, _{the weight of the water-hard composition C 1} per bag and the curing thereof are achieved. The total weight with the amount of water required for making it becomes heavy, and it becomes a considerable physical burden when kneading or stepping on the site at the time of use and mixing. Therefore, the hydraulic composition C ₁ per bag 500g or less, preferably from not only be about 2 times the combined weight of the water amount needed to cure to the 200 to 400 g, easy to carry relatively lightweight Since it is relatively compact, it can be mixed uniformly by kneading or stepping on it in a shorter time when it is used in the field without a considerable physical burden, and it becomes easy to discharge. For example the width 150 mm, when the bag body 11 about longitudinal 350mm houses a hydraulic composition _{C 1} in 780 g, to be mixed with a predetermined amount of water, although it takes about 1 minute half 3 minutes contrast, width 100 mm, when the bag body 11 about longitudinal 320mm houses a hydraulic composition _{C 1} in 280 g, to be uniformly mixed with a predetermined amount of water, need not requiring only within 1 minute.

The bag body 11 is made of a resin having high strength that is difficult to permeate water such as polyamide, and is made of a relatively thick film. The thickness of this film is preferably 100 to 250 μm, more preferably 100 to 180 μm, and even more preferably 100 to 150 μm. Such bag 11 is not damaged by vibration and friction caused during transportation or storage, and because the tip opening of the cylindrical portion 12a is closed by the cap 13, the hydraulic composition C ₁ is the unexpectedly water Do not touch.

The film is colored colorless and transparent or in any color such as white or blue so that the water-hard composition C ₁ , the curable paste C ₂ , and the water W in the bag 11 can be visually recognized through the bag 11. It is preferably translucent.

Meanwhile the bottle 21, the specified amount of water W corresponding to the mass of the hydraulic composition C ₁ is accommodated. As the bottle 21 containing water W, for example, Iser Pure Water (250 mL, manufactured by Axis Co., Ltd., trade name) is commercially available. However, it is a lot of work to transport the water-filled bottle 21 to the work site. Therefore, it is convenient and efficient to transport the empty bottle 21 to the work site and pour a predetermined amount of easily available water such as tap water into the bottle 21 at the work site. A cap (not shown) that tightly closes the tip opening of the bottle 21a containing water W is screwed and attached until just before it is used. Further, since the bottle 21 is molded of a hard resin such as polypropylene or polyethylene terephthalate, it has excellent shapeability, can maintain its outer shape without being deformed by the flow of water W, and is not damaged by vibration or friction. Therefore, the water W does not suddenly leak from the bottle 21 during transportation or storage.

As described above, since the hydraulic composition C ₁ and the water W are separately housed in the bag body 11 and the bottle 21, unexpected contact between the two is surely avoided, and the bottle has a fixed shape. Since water W is stored in 21, it is excellent in handleability during transportation and storage. Further, since it is not always necessary _{to carry the hydraulic composition C 1} and the water W at the same time, the material for preparing the curable paste can be dispersed and carried to an arbitrary place. According to this, when a large amount of curable paste needs to be prepared, the labor required for transportation can be reduced as compared with carrying a pouch container in which the hydraulic composition and water of the required weight are contained inseparably. ..

Immediately before the preparation of the curable paste C ₂ , the operator removes the cap attached to the cylinder port 21a, and instead attaches the injection nozzle 22 to the injection port 21a in a liquid-tight manner. The injection nozzle 22 has a cap-shaped mounting portion 22a screwed into the bottle 21 at the base end portion, and a conical portion 22b extending upward while gradually reducing the diameter on the upper surface thereof. As a result, the conical portion 22b forms a conical cylindrical body having a taper. On the outer surface of the conical portion 22b, a rib 22c protrudes between the tip of the conical portion 22b and the upper surface of the mounting portion 22a. The ribs 22c project in four directions along the orthogonal diameter of the circular cross section of the conical portion 22b and at a constant height along the taper of the conical portion 22b. Although an example having the rib 22c is shown in FIG. 3, it is not necessary to have the rib 22c.

Next, as shown in FIG. 3B, after removing the cap 13, the operator places the pack 10 on an appropriate flat table (not shown) so that the pack 10 stands upright. Operator knob there with the right hand 31 to face the lower slightly the cylindrical portion 12a of the port 12, folding the bag 11 at the upper side portion 11a ₁ nearer the upper end face of the hydraulic composition C _1. Thereby, the hydraulic composition C ₁ is not leaking from the distal end opening of the cylindrical portion 12a. Next, the operator grasps the bottle 21 with his left hand 32 and inserts the conical portion 22b into the tip opening of the tubular portion 12a from the tip portion thereof. At this time, unless the tip of the conical portion 22b is positioned above the bottom of the bottle 21, the injection nozzle 22 cannot be inserted into the port 12, so that the water W does not leak from the tip opening of the conical portion 22b.

The taper of the conical portion 22b or the rib 22c provided as needed bites into the opening of the tubular portion 12a and fits together. At this time, since the rib 22c protrudes from the outer surface of the conical portion 22b, a gap S corresponding to the height of the rib 22c is formed between the outer surface of the conical portion 22b and the opening of the tubular portion 12a (same as above). (C). By connecting the port 12 and the injection nozzle 22 in this way, the pack 10 and the bottle 21 are connected.

As shown in FIG. 3C, the operator supports the upper end side portion 11a ₁ of the bag body 11 so as to be sandwiched by the right hand 31 so that the pack 10 stands upright, and the bottom of the bottle 21 is on the upper side, and the injection nozzle 22 is used. The bottle 21 is reversed so that it is located on the lower side. As a result, the water W in the bottle 21 passes through the injection nozzle 22 and is poured into the bag body 11. The air in the bag 11 is discharged from the gap S in response to the inflow of water W into the bag 11. In this way, since the pack 10 and the bottle 21 are integrally connected by the injection nozzle 22, a predetermined amount of water W measured in advance can be reliably and quickly discharged without spilling any water. it can be absorbed by the hydraulic composition C _1. After visually confirming that the entire amount of water W in the bottle 21 has been poured into the bag body 11, the operator pulls out the injection nozzle 22 from the cylinder portion 12a and releases the connection between the pack 10 and the bottle 21. To do.

100 parts by weight of water per W of the hydraulic composition _{C 1} is preferably 20 to 40 parts by weight, more preferably from 25 to 40 parts by weight, more and more that 25 to 35 parts by weight preferable. If the amount of water W is less than this lower limit, the amount of water W is insufficient and the curable paste C ₂ having appropriate fluidity cannot be prepared, resulting in workability such as repairing cracks and filling tile joints. descend. On the other hand, when the amount of water W exceeds this upper limit value, the curable paste C ₂ exhibits excessive fluidity, lacks filling property to cracks, and prolongs the curing time until curing. The temperature of water is preferably 3 to 50 ° C, more preferably 10 to 20 ° C.

FIG. 4 shows the middle stage process in the anchor element fixing method using the pack type curable paste construction method. As shown in FIG. 6A, the cap 13 is screwed and attached to the tubular portion 12a to seal the bag body 11. Cap 13, so as to cover the front end opening of the cylindrical portion 12a closes in a liquid-tight, and hydraulic composition C ₁ and the water W of the bag 11 is not omissions. The operator grabs the pack 10 with both hands 31 and 32 and kneads or pushes the bag body 11. As a result, the bag body 11 is deformed, the hydraulic composition C ₁ and water W are mixed, and a curable paste C ₂ is prepared.

If necessary, the pack 10 may be turned upside down so that the upper end side portion 11a ₁ faces downward and the lower end side portion 11a ₃ faces upward, or the pack 10 may be reciprocated so as to swing in the horizontal or vertical direction. May be bent. Alternatively, after adding water, shake strongly up and down about 10 times, turn the pack over, and shake it up and down about 10 times again. Repeat 1 set procedure for 4 to 5 sets, and the water spreads throughout the cement. It may be premixed as follows. In addition, the air A may occupy a part of the inner air volume of the bag body 11 together with the _{hydraulic composition C 1 and the water W.} Not required in this process, and a strong force enough hydraulic composition C ₁ of the injected water W from above to reach the vicinity of the lower side portion 11a ₃ long, Dari massaged bag 11, to pushing .. Optionally after addition to being able to fully mixed them using a pressing tool, increases the burden on the operator, a mixture of a hydraulic composition C ₁ and water W begins to reach cured initial setting Because there is a fear.

As shown in FIG. 4B, the pack 10 is supported by the right hand 31 so that the pack 10 stands upright on the flatbed again. Loosen the cap 13 with the left hand 32 and remove it again to release the seal of the bag body 11. As a result, the inner air of the bag body 11 and the outer world are communicated with each other. Next, the bag body 11 is deformed by grasping or pushing the bag body 11 with the right hand 31. As a result, at least a part of the facing inner surfaces of the bag 11 come into contact with each other, and the air A in the bag 11 is discharged from the port 12. At this time, if the air retention portion above the bag body 11 is sandwiched between the right hand 31 and the right hand 31 is _{slid toward the upper end side portion 11a 1} as it is, the air A can be quickly discharged. When most of the air A has been exhausted, the operator re-tightens the cap 13.

The step of kneading the bag body 11 shown in FIG. 4A and the step of discharging the air A shown in FIG. 4B may be reversed. In this case, specifically, after injecting water W into the pack 10 (see FIG. 3C), the pack 10 is deformed and air is formed before the cap 13 is attached to the tubular portion 12a to seal the bag body 11. A is discharged from the port 12. Next, while the pack 10 is deformed, the cap 13 is attached to the tubular portion 12a to seal the bag body 11, and the bag body 11 is grasped with both hands 31 and 32 to push or knead the bag body 11 to make water W and water hardness. The curable paste C ₂ is prepared by mixing with the composition C _1.

The external force applied to the pack 10 at the time of mixing may be a human force of pushing, kneading, stepping on, or shaking the pack 10. When this method is adopted, parts of the human body such as hands, elbows, knees, and feet are brought into contact with the pack 10 or grasped by hand to apply pressing force or shaking to the pack 10. Curable paste C ₂ can be prepared. The time for applying human power is preferably 30 to 120 seconds, more preferably 30 to 90 seconds, and even more preferably 30 to 60 seconds. The external force applied to the pack 10 when the hydraulic composition and water are mixed and / or extruded at a curable pace may be mechanical power, and the pressing force of a pressing roller (not shown) and It may be either one or both of human power.

The film forming the bag 11 is preferably soft and flexible. Examples of the material of this film include thermoplastic resins, and specifically, for example, polyethylene, polypropylene, polybutene, poly-4-methylpentene-1, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyvinyl acetate, and polymethacrylic acid. Monopolymers containing at least one of the group consisting of methyl, polyethyl methacrylate, polyacrylic acid, cyclic polyolefins, polyacrylonitrile, polyamide (nylon), polyesters, polyurethanes, polycarbonates, polyimides, polyphenylene sulfides, and polyvinyl chlorides and / Or copolymers and / or polymer blends.

The structure of the film may be a single layer formed of the above-mentioned type of thermoplastic resin, or may be a multilayer structure in which a plurality of films formed of the same or different thermoplastic resins are adhered to each other. When the film has a multilayer structure, for example, a polyamide (nylon) layer (PA; 15 μm thickness) / barrier polyamide (nylon) layer (barrier PA; 15 μm thickness) / linear low-density polyethylene layer from the inner layer to the outer layer. (LLDPE; 130 μm thickness), in that order, a laminated multilayer structure can be mentioned. Further, the multilayer structure is formed from the inner layer to the outer layer inside: linear low density polyethylene layer (LLDPE; 130 μm thickness) / polyamide (nylon) layer (PA; 15 μm thickness) / barrier polyamide (nylon) layer (barrier PA; 15 μm thickness). ) May be used. Further, the multilayer structure is in the order of polyethylene terephthalate layer (PET; 12 μm thickness) / barrier polyamide (nylon) layer (barrier PA; 15 μm thickness) / linear low density polyethylene layer (LLDPE; 130 μm thickness) from the inner layer to the outer layer. It may be. In particular, the outermost LLDPE layer preferably has a thickness of at least 100 μm. As a result, the film does not tear or tear even if the internal pressure of the bag 11 rises due to friction with the hands and feet and the pressure caused by them. On the other hand, if the thickness of the LLDPE layer exceeds 150 μm, the film is not easily deformed by external pressure, so that the hydraulic composition C ₁ and water W cannot be sufficiently mixed and kneaded, and a homogeneous curable paste C ₂ is obtained. I can't. Further, the welding zone 11a can be formed by heat welding, ultrasonic welding, or induction welding.

The above thermosetting resin can also be used as a material for the port 12.

As shown in FIG. 4C, the injection connector 23 that can be screwed in exchange for the cap 13 and the tape of the injection amount indicator mark 25 having a thickness that can be fitted to the tip of the injection connector 23. An injection tube 24, which is affixed or has an injection amount instruction mark 25 printed on it, is prepared. The injection connector 23 is a tubular body and has a circular opening at the upper end thereof. Further, the injection connector 23 has a female screw that can be screwed into the male screw of the tubular portion 12a on the inner wall surface of the base end portion, and has a plurality of scaly ring portions 23a on the outer surface from the middle to the tip portion. Each scaly ring portion 23a is formed concentrically with the circular opening, and has a head shape gradually expanding toward the proximal end portion. As a result, a plurality of steps are formed on the outer surface of the injection connector 23. A connector having such an outer shape is called a bamboo shoot. The operator screwes and attaches the injection connector 23 to the tubular portion 12a.

Next, as shown in FIG. 4C, one end of the injection tube 24 is fitted into the injection connector 23, and this and the injection connector 23 are fastened and fixed by the fastener 26. Since the injection connector 23 has a plurality of steps due to the scaly ring portion 23a and the injection tube 24 is fastened by the fastener 26, the injection connector 23 cannot be easily removed from the injection connector 23. A vinyl tape, which is an injection amount instruction mark 25, is wrapped around the middle of the injection tube 24 and attached to the vinyl tape. _{The injection amount indicating mark 25 is formed when the curable paste C 2} in an amount satisfying the difference between the volume of the hole 61b and the volume of the insertion portion of the anchor element inserted therein is injected into the hole 61b. It is attached at a position exposed from the opening of the hole 61b (see FIG. 5D).

FIG. 5 shows the latter half of the anchor element fixing method using the curable paste application method by the pack method, which is an example of the curable paste application method of the present invention. The figure shows the process of attaching the columns for fixing the rockfall protection net to the upholstered concrete.

The upholstered concrete 61 shown in FIG. 5A is formed by concrete upholstery on the slope 62, and covers the slope 62 with a substantially uniform thickness. Therefore, the surface 61a of the upholstered concrete 61 is inclined. The operator sets the core boring machine 71 on the surface 61a and rotates the core drill 71a attached to the tip of the core boring machine 71 to form cylindrical drilling 61b at twenty to thirty places.

The depth (length) and diameter of the drilled hole 61b are determined according to the thickness of the upholstered concrete 61 and the length and diameter of the anchor element to be fixed. In particular, the depth of the drilled hole 61b is preferably at least 5 to 10 times the diameter of the anchor element. For example, when the anchor element is a D25 reinforcing bar (name of deformed steel bar specified in JIS G3112 (2010): nominal diameter 25.4 mm), the depth of the drilled hole 61b is 125 to 250 mm, specifically 175 to 200 mm. More specifically, there is a drilling hole 61b having a diameter of 27 to 180 mm, a diameter of 27 to 38 mm, a specific diameter of 30 to 35 mm, and a specific diameter of 30 to 33 mm.

As shown in FIG. 5B, the operator inserts the injection tube 24 into the hole 61b until _{the tip of the injection tube 24 comes into contact with the bottom surface 61b 1 of the hole 61b.} Next, as shown in FIG. 3C, the operator holds the bag body 11 with, for example, the left hand 32, so that the inner side surfaces of the bag body 11 are in contact with each other, and the pressure is applied in the opposite directions on both sides of the bag body 11. Multiply and compress. As a result, the curable paste C ₂ in the bag 11 is discharged from the injection tube 24 and flows into the drilled hole 61b. At this time, it is preferable to discharge the _{curable paste C 2} from the lower end side portion 11a ₃ toward the injection tube 24 while handling it with the hands 31 and 32. Further, by gradually winding the bag body 11 from the lower end side portion 11a _{3 toward the port 12 by hands 31 and 32, pressure is applied to the curable paste C 2} in the bag body 11 to apply pressure to the injection connector 23 and the injection tube 24. This may be discharged from.

As shown in FIG. 5C, the operator gradually moves the pack 10 in the direction X away from the opening of the hole 61b while injecting _{the curable paste C 2 into the hole 61b.} At this time, the worker continues the injection of curable paste C ₂ while contacting the distal end of the infusion tube 24 and the liquid surface of the curable paste C _2. As a result, as _{the injection amount of the curable paste C 2} increases in the hole 61b, the injection tube 24 moves in the direction of being removed from the hole 61b. Further, the operator can sense the pressure of the _{curable paste C 2} generated when the liquid level of the curable paste C ₂ moves toward the opening of the drilling hole 61b. Thereby, the operator can recognize the smooth injection of the curable paste C _2.

When the operator continues this work, as shown in FIG. 5D, the injection amount instruction mark 25 appears and disappears at the opening of the drilling hole 61b. When the operator visually confirms that the injection amount instruction mark 25 appears and disappears at the opening of the drilling hole 61b, the operator instructs the inside of the bag body 11 and the injection amount instruction of the injection tube 24 from the bag body 11. _{The curable paste C 2} with the inside up to the mark 15 is handled and extruded up to the injection amount instruction mark 15, and the injection work _{of the curable paste C 2 into one drilling hole 61b is completed.} Thus the operator, at the injection step of the curable paste C _2, only by performing a simple task simple that watch the opening of the drilling 61b while moving the pack 10, the drilling 61b of the anchor element The injection of the _{curable paste C 2} can be completed leaving only the volume of the portion to be inserted in the drilled hole 61b. As a result, when the anchor element is inserted into the drilling hole 61b, it is possible to prevent the uneconomical _{situation that a large amount of the curable paste C 2 overflows from the opening of the drilling hole 61b.}

FIG. 5 (e) shows the driving process of the anchor element. The anchor bolt 81, which is an anchor element, has a long substantially cylindrical shape, and has a base end (see the figure (f)) having a plane substantially perpendicular to the central axis thereof, and the base end. It has a tip that has an elliptical surface due to its inclination with respect to the surface. Whereby the tip of the anchor bolt 81 is sharply pointed, easily inserted into the drilled 61b filled with a curable paste C _2. A plurality of ribs 81a protrude from the tip to the middle of the anchor bolt 81. A male screw 81b is provided on the surface of the base end portion of the anchor bolt 81. A nut 83 for fixing the support of the rockfall protection net is screwed into the male screw 81b (see the figure (f)). The total length of the anchor bolt 81 satisfies the anchor bolt fixing length specified in the standard, and the drilling 61b is drilled so that the male screw 81b protrudes from the opening of the drilling 61b when driven into the drilling 61b. It is longer than the hole length (depth). The tip of the anchor bolt 81 does not have to be sharp, and even a so-called shredded product having a substantially circular end face can be sufficiently inserted without any problem.

The dimensions of the anchor bolts 81 are not particularly limited, but for example, those with the names D4 to D51 of deformed steel bars specified in JIS G3112 (2010) can be used. Further, the anchor bolt 81 may be a full screw bolt having a nominal diameter of M6 to M100.

The operator holds the base end of the anchor bolt 81 with his right hand 31 (or his left hand 32, or both hands) and rotates it around the central axis of the anchor bolt 81 so that air does not enter the _{curable paste C 2.} It is inserted into the curable paste C _{2 in the hole 61b.} With the curable paste C ₂ having moderate fluidity and the sharp tip of the anchor bolt 81, the operator does not need much force to scrape the anchor bolt 81 filled _{with the curable paste C 2.} It can be driven into the hole 61b. Operator performs this step within the pot life is the time until the initial setting of the curable paste C ₂ from Upon completion the preparation of the curable paste C _{2. When the pot life is passed, the fluidity of the curable paste C 2} that has reached the start of condensation is gradually lost, and the driving resistance of the anchor bolt 81 increases, which is used by the right hand 31 (and / or the left hand 32). ) Will make it difficult to drive manually.

The operator supports the anchor bolt 81 in the drilled hole 61b with the hands 31 and 32 so as to have a predetermined angle. _{Since the curable paste C 2} that has reached the end of condensation starts to cure, the anchor bolt 81 is fixed in the drilled hole 61b without the support of an operator and while maintaining a predetermined angle. The operator removes the _{slightly overflowing curable paste C 2} from the drilling 61b, if necessary. The operator continues to move in front of another drilling hole 61b and repeats the work of FIGS. 5 (b) to 5 (e).

Since a sufficient amount of the curable paste C ₂ prepared from 100 to 3000 _{g of the hydraulic composition C 1} is contained in the pack 10, the operator uses a separate pack 10 for each new curable paste. No preparation work for _{C 2 is required. Therefore, in this curable paste construction method, the injection work of the curable paste C 2} and the insertion work of the anchor element are interrupted in a medium-scale work in which the anchor element is fixed in dozens of holes 61b. Since it can be performed as a continuous flow work without any work, the burden on the worker can be reduced and the work time can be shortened.

The upholstered concrete 61 that has undergone the steps shown in FIGS. 5 (a) to 5 (e) is shown in FIG. 5 (f). The cured _{body C 3} produced by curing the curable _{paste C 2} closes the opening of the hole 61b and is densely filled between the inner wall surface of the hole 61b and the anchor bolt 81. The anchor bolt 81 is fixed to the upholstered concrete 61, and the nut 83 is screwed into the male screw 81b at the base end portion thereof to fix the support column 82. Anchor bolt 81 by the anchor effect of the ribs 81a is to improve the pull-out strength of the cured body C _3.

Hereinafter, examples of a water-hardening composition to which the present invention is applied, a curable paste construction kit using the same, and an anchor element fixing method by the curable paste construction method will be described in detail.

(Example 1 and Comparative Example 1)
(Preparation of hydraulic composition)
Raw materials: early-strength Portland cement (manufactured by Ube Mitsubishi Cement Co., Ltd., early-strength Portland cement), alumina cement (manufactured by Denka Co., Ltd., alumina cement No. 1 molten product), quick binder (manufactured by Noritake Company Limited, semi-water) Gypsum β-type SB), STARVIS 308F (trade name manufactured by BASF Japan Co., Ltd.) as a viscosity modifier, trisodium citrate hydrate, lithium carbonate, potassium carbonate and aerodil (manufactured by Japan Aerodil Co., Ltd.) as coagulation adjusters. 20: 1:30: 1 mass ratio mixture with (trade name), silica sand No. 7 (trade name manufactured by Nikko Gypsum Co., Ltd.) as a fine aggregate is weighed at the mass ratio shown in Table 1 and put into a mixer. And stirred to prepare the water-hard composition of the preparation example.

The same hydraulic composition consisting only of early-strength Portland cement as that used in the preparation example was used as a preparation comparative example.

(Preparation of fixing agent capsule)
450 g of the water-hardening composition of the preparation example and the preparation comparative example was sealed in a water-permeable tubular container made of non-woven sheet made of heatlon paper ^{at a basis weight of 40 g / m 2, and the length was 300 mm and the diameter was 34 mm.} Fixant capsules of Examples and Comparative Examples were obtained, respectively.

(Measurement of water / cement ratio)
After weighing the fixing agent capsule of the example, it was immersed in tap water at 20 ° C. for 5 minutes and then taken out and weighed. Regarding the weight of the fixing capsule, the water / cement ratio, which is a percentage of the weight before immersion with respect to the weight after immersion, was determined to be 29%.

(Compression test)
After measuring the water / cement ratio, the water-permeable tubular container of the fixing agent capsule of the example was destroyed, and the aggregated fixing agent was taken out to form a cylinder cartridge having a cylinder tip with a cap at the tip and an opening at the base end. I put it in. A stirrer in which the base end of a stirrer rod (manufactured by Fujiwara Sangyo Co., Ltd., product name: Paint Mixer SPM-4) having a stirrer blade at the tip of the rotary rod is connected to an electric impact driver which is a rotary tool. The stirrer blade was inserted into the cylinder cartridge through the opening and stirred for 1 minute, and the aggregated fixing agent was dispersed in the cylinder cartridge to prepare the curable paste of the example. The curable paste of the example was poured into a mold to prepare a cured product of the example in accordance with JIS A1108 (2006). A compressive strength test was carried out on this cured product in accordance with the same standard, and the compressive strength (N / mm ² ) after 3 hours, 1 day, 3 days, 7 days, and 28 days of curing was measured. As a result, all curing conditions were set to 20 ° C. and relative humidity 90%. The results are shown in Table 2.

A cured product of Comparative Example was prepared by operating in the same manner as in Example, and the compressive strength was measured. The results are shown in Table 2.

The cured product using the water-hardening composition of the example ^{showed a compressive strength of 50 N / mm 2} after curing for only 3 hours, and after 7 days, the compressive strength was about 90% of that of the cured product cured for 28 days. Reached. It was found that the hydraulic composition of the example showed extremely high compressive strength even after short-term curing. On the other hand, the cured product using the hydraulic composition of Comparative Example showed significantly lower compressive strength as compared with that of Example.

(Tensile test of anchor bolt)
A hole having a hole diameter of 28 mm was formed in a concrete block having a size of 1000 × 1000 × 3000 mm using a hammer drill. The anchor bolt to be fixed to this concrete block (SD345 deformed steel bar specified in JIS G3112 (2010), name D22, nominal cross-sectional area 3.871 cm ² ; length 1000 mm, tip 45 degree diagonal cut) shall be 220 mm. Therefore, the drilling length was set to 245 mm. The fixing agent capsules of the examples were immersed in tap water having a water / cement ratio of 20 ° C. for 3 minutes. A curable paste was prepared in the same manner as in the compression test. The lid was fitted into the opening of the cylinder cartridge, the cap screwed to the tip of the cylinder was removed, the nozzle connected to the injection tube having the injection amount indicator mark on the outer peripheral surface was screwed to the tip of the cylinder, and the cylinder cartridge was set in the injection gun. .. Then, the injection tube was inserted into the drilling hole and the curable paste was injected into the drilling hole. The injection of the curable paste was continued while pulling the injection gun toward you. The injection was terminated when the entire injection amount indication mark appeared and disappeared from the opening of the drilled hole. After that, the anchor bolt was inserted into the drilling hole while rotating by hand, and the anchor bolt was fixed to the concrete block. After curing for one day at a temperature of 20 ° C to generate a hardened body, a hydraulic pump, a hydraulic jack connected to the hydraulic pump, and a hydraulic jack that pulls the anchor bolt from the concrete block by the hydraulic pressure generated by the hydraulic pump, and flood control A tensile test was performed in accordance with JIS G3112 (2010) using a tensile tester having a load cell for measuring the load generated by the jack and a displacement meter for measuring the displacement amount of the anchor bolt. The number of samples was N = 3. The results are shown in FIG. 6 (a).

The fixing agent capsule of the comparative example was subjected to a tensile test by operating in the same manner as in the example. The number of samples was N = 1. The results are shown in FIG. 6 (a).

FIG. 6A is a graph showing the results of a tensile test of anchor bolts fixed to a concrete block using the hydraulic composition of the example, and shows the correlation between the displacement amount and the load. The horizontal axis shows the displacement amount (mm) of the anchor bolt, and the vertical axis shows the tensile load (kN) of the anchor bolt. As shown in FIG. 6A, the tensile load exceeds 133.5 kN (solid line between 120 and 140 kN in the graph), which is the yield point of the anchor bolt specified in JIS G3112 (2010). Even when the breaking point (tensile strength) specified in the same standard, 189.6 kN (solid line between 180 and 200 kN in the graph) is reached, the wall surface of the drilled hole and the hardened body break. And the anchor bolts did not come off the concrete block. Since the anchor bolt may break, the test was terminated when the tensile load reached 190 kN. On the other hand, when the hydraulic composition of the comparative example was used, the cured product came out of the drilled hole together with the anchor bolt before reaching the yield point specified in the JIS standard.

(Linear expansion test)
A linear expansion test was performed using a linear expansion measuring instrument (manufactured by Maruhishi Kagaku Kikai Seisakusho Co., Ltd.). This linear expansion measuring instrument is connected to a mold having an open top surface and a rectangular shape having a longitudinal direction and a lateral direction, and a displacement surface which is one of the lateral directions of the mold. It has a stylus that extends outward from the mold and displaces with the displacement surface, and a displacement sensor that detects the amount of displacement of the stylus. The displacement sensor is electrically connected to the information processing storage device.

Using the fixing agent capsule of the example, the curable paste was prepared by operating in the same manner as in the compression test, except that the paste was immersed in tap water at a water temperature of 20 ° C for 5 minutes in an environment of a temperature of 20 ° C and a relative humidity of 80% or more. Prepared. This curable paste was poured from the top surface of the mold to fill the space inside the mold without any gaps. While maintaining the above environment, the curable paste was cured, the displacement amount was detected by the displacement sensor, and the uniaxial expansion in the curing process of the curable paste was continuously measured. The results are shown in FIG. 6 (b).

The fixing agent capsule of the comparative example was subjected to a linear expansion test by operating in the same manner as in the example. The results are shown in FIG. 6 (b).

FIG. 6B is a graph showing the results of the uniaxial expansion test of the curable paste. This graph shows the correlation between time and displacement. The horizontal axis is time (time), and the vertical axis is the amount of displacement (mm). Thick lines show examples and thin lines show comparative examples. Immediately after the start of the test, the displacement amount of the example increases, and thereafter, the displacement amount is almost constant, and no decrease in the displacement amount is observed. From this, it was found that the curable paste swelled slightly immediately after the start of the test and did not shrink thereafter. This indicates that the hydraulic composition of the present invention is a cement-containing composition that exhibits slight expansion at the start of curing and does not shrink. As a result, according to the hydraulic composition of the present invention, it was found that the anchor element can be fixed to the concrete skeleton with high strength because the cured body and the inner wall surface of the drilled hole are in close contact with each other. On the other hand, the displacement amount of the comparative example has hardly increased immediately after the start of the test. This indicates that the hydraulic composition of the comparative example does not expand in the curing process, so that the cured product does not adhere to the wall surface of the drilled hole, and the anchor element can be fixed only with low strength.

(Example 2 and Comparative Example 2)
(Making a pack)
As a multi-layer structure, from the inner layer to the outer layer, inside: linear low density polyethylene layer (LLDPE; 130 μm thickness) / polyamide (nylon) layer (PA; 15 μm thickness) / barrier polyamide (nylon) layer (barrier PA; 15 μm thickness) Two sheets of rectangular multilayer films (160 μm thick) laminated in order were prepared to form a bag body. The port whose opening was closed by a cap was sandwiched between a part of the peripheral edges of 15 μm thick nylon films and heat-welded to fix the port. The portion where the port was fixed was set as the upper end side portion, and the side side portion was heat-welded while leaving the lower end side portion to prepare a pack having a width of 100 mm and a length of 320 mm. As a result, a bag body with a port having an open lower end side was produced. From the open lower end side of the bag, 270 g of the hydraulic composition prepared in Example 1 was placed. After that, the lower end edge was heat-welded to house the hydraulic composition in the bag body, and a plurality of packs of Examples were prepared.

The cap of the obtained pack was removed, and 87 g of water was poured into the bag from the port so that the water ratio (mass of water to mass of hydraulic composition) was 32%. After fitting the cap into the port and rubbing the bag with both hands, loosen the cap and slowly push the bag to expel air from the port. After tightening the cap, I rubbed it again. After rubbing for a total of 1 minute, I couldn't see the lumps. 357 g of the curable paste of the example in which the hydraulic composition in the bag and water were uniformly kneaded was obtained.

The same hydraulic powder consisting only of early-strength Portland cement as used in Example 2 was used as a comparative example. Preparation A pack was prepared in the same manner as in Example 2 except that it was replaced with the hydraulic composition of Comparative Example 1.

(Compression test)
The packs of Example 2 and Comparative Example 2 and the required amount (32% by mass) of water were placed in a constant temperature bath at 20 ° C. After 24 hours, the curable paste of the example was prepared by the same operation as above in an atmosphere of 20 ° C. The bag body of the pack was crushed and the curable paste was poured from the nozzle into the mold to prepare a cured product of the example in accordance with JIS A1108 (2006). The cured product was subjected to a compressive strength test in accordance with the same standard, and the compressive strength (N / mm ² ) was measured after 1 day, 7 days, and 28 days of curing. All curing conditions were 20 ° C. and 90% relative humidity. The results are shown in Table 3.

The cured product obtained by curing the curable paste prepared using the pack of the example ^{showed a compressive strength of 55 N / mm 2} after only one day of curing, and after 7 days, approximately the same as the cured product cured for 28 days. It reached a compressive strength of 80%. It was found that Example 2 showed extremely high compressive strength even after short-term curing. On the other hand, the cured product of Comparative Example 2 showed significantly lower compressive strength than that of Example 2.

(Tensile test of Example 3 and Comparative Example 3 and anchor bolt)
A hole with a diameter of 14 mm and a length of 70 mm was formed in a concrete block of 1000 × 1000 × 3000 mm using a hammer drill. Anchor bolts to be fixed to this concrete block (SD345 deformed steel bar specified in JIS G3112 (2010), nominal D10, nominal diameter 9.5 mm; standard yield point 24.5 kN (= SD345 deformed steel bar cross-sectional area 126.7 mm ² x 345) ); Length 1000 mm, tip cut) was prepared. The curable paste of Example 3 was prepared in the same manner as in the operation in the compression test. The cap was removed from the port and replaced with a nozzle screwed into the port. Further, an injection tube with an injection amount instruction mark was fitted to the tip of this nozzle. The bag was squeezed by hand and the curable paste was injected into the holes. When the injection amount indication mark appeared and disappeared from the opening of the hole, the curable paste inside the pack and the injection tube up to the injection amount indication mark was extruded, and then the injection was stopped.

After that, the anchor bolt was inserted into the drilling hole while rotating by hand, and the anchor bolt was fixed to the concrete block to prepare a sample for a tensile test. The anchor bolt fixing length at this time was set to 70 mm. After curing for 24 hours at a temperature of 20 ° C. to generate the cured product of Example 3, the hydraulic pump and the hydraulic pressure connected to the hydraulic pump generated by the hydraulic pump pull the anchor bolts out of the concrete block. A tensile test was performed in accordance with JIS G3112 (2010) using a tensile tester having a jack, a load cell for measuring the load generated by the hydraulic jack, and a displacement meter for measuring the amount of displacement of the anchor bolt. The number of samples was N = 3. As a result, even if the tensile load reached 30 kN exceeding the standard yield point, the anchor bolt did not come off from the concrete block and there was a risk that the anchor bolt would break, so the test was stopped. The results are shown in Table 4. In the table, in the "maximum tensile load" column in Example 3, the "*" attached to the numerical value indicates that the test was stopped when the tensile load reached the numerical value.

Further, the nominal name or the nominal diameter of the anchor bolt was changed as shown in Table 4, and a test sample was prepared in the same manner as described above. The number of samples prepared was 24. To prepare these samples, the process of preparing the curable paste was repeated three times to prepare the samples. If the amount to be prepared is adjusted, it is not necessary to repeat the process of preparing the curable paste, and the curable paste may remain in the bag when all the samples have been prepared.

The curable paste of Comparative Example 3 was prepared by operating in the same manner as in the above compression test. Further, a sample for a tensile test was prepared by operating in the same manner as in the examples. Since the curable paste was insufficient in the middle of preparing 24 samples, the curable paste was prepared twice more. A tensile test was performed on the prepared sample. As a result, the cured product of Comparative Example 3 came out of the drilled hole together with the anchor bolt near the standard yield point of the anchor bolt.

(Example 4, Comparative Example 4, and flexural strength test)
The curable paste of Example 4 was prepared by operating in the same manner as in the above-mentioned "Preparation of curable paste". This was poured into a mold having a length of 40 mm, a width of 160 mm, and a height of 40 mm, and cured at 20 ° C. and a relative humidity of 90% for 7 days to prepare three cured product samples for bending strength test of Examples. This cured product sample was subjected to a flexural strength test at a loading speed of 50 N / sec in accordance with JIS R5201 (2015) "11.2.5 flexural strength tester" and "11.7.2 flexural strength". .. For Comparative Example 4, a cured product sample was prepared by operating in the same manner as in Example, and a bending strength test was performed. These results are shown in Table 5.

As can be seen from the average values in Table 5, the cured product of Example 4 had considerably stronger bending strength than that of Comparative Example 4.

The hydraulic composition of the present invention, and the curable paste construction method and the curable paste construction kit using the same, can be used to increase the shear strength of an existing concrete artificial structure or to attach a workpiece to it. It is used to fix anchor elements such as anchor bolts and reinforcing bars.

1 is a curable paste construction kit, 10 is a pack, 11 is a bag body, 11a is a welding zone, 11a ₁ is an upper end side, 11a ₂ is a _{side side, 11a 3} is a lower end side, 12 is a port, and 12a is. Cylinder part, 12b is base part, 13 is cap, 21 is bottle, 21a is cylinder mouth, 22 is injection nozzle, 22a is mounting part, 22b is conical part, 22c is rib, 23 is injection connector, 24 is injection tube, 25 Is an injection amount indication mark, 26 is a fastener, 31 and 32 are hands, 61 is a stretched concrete, 61a is a surface, 61b is a hole, 61b ₁ is a bottom surface, 62 is a slope, 71 is a core boring machine, 71a is a core drill. 81 is an anchor bolt, 81a is a rib, 81b is a male screw, 82 is a strut, 83 is a nut, 100 is a fixing agent capsule, 110 is a water permeable tubular container, 200 is a tray, 300 is a cylinder cartridge, 310 is a cylinder tip, 310a. Is a cap, 310b is a nozzle, 310c is an injection tube, 310d is a fastener, 310e is an injection amount indication mark, 320 is a cylinder, 330 is an opening, 340 is a lid, 400 is a stirrer, 410 is a rotary tool, 420 is. Rotating rod, 430 is a stirring blade, 430a is an opening, 430b is a plate, 430c is a tongue piece, 430d is a protruding part, 500 is an injection gun, 510 is a tip side support, 520 is a main body support, and 530 is a piston. 540 is the operation part, 540a is the trigger part, 540b is the grip part, 550 is the base end part, 560 is the delivery rod, Ca is the aggregate, C ₁ is the water-hard composition, C ₂ is the curable paste, and C ₃ is. The cured product, S is a gap, and W is water.

Claims (25)

A hydraulic component containing Portland cement, alumina cement, and a quick-setting agent, a viscosity adjusting agent, a setting adjusting agent, and a fine aggregate having a particle size classification of No. 4 to 8 in accordance with JIS G5901 (2016). A hydraulic composition characterized by containing. For fixing anchor elements, repairing cracks, fixing bricks, blocks or tiles or filling joints, stopping water leaks, improving ground, filling cavities, coating cosmetic mortar on the surface, painting walls The hydraulic composition according to claim 1, wherein the hydraulic composition is used for producing or decorating a product. Thickeners are selected from cellulose derivatives selected from methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, and carboxymethyl cellulose; natural polysaccharide derivatives containing at least one of the cellulose derivatives; acrylamide; starch ethers; polymeric electrolytes; The water-hardening composition according to claim 1, wherein the thickener contains at least one of them. The coagulation modifier is at least one oxycarboxylic acid selected from citric acid, gluconic acid, tartaric acid, malic acid, salicylic acid, m-oxybenzoic acid, and p-oxybenzoic acid or a salt thereof; ligninsulfonic acid or a salt thereof. The water-hard composition according to claim 1, which is a settling time adjusting agent containing at least one selected from a salt; a sugar alcohol selected from sorbitol, pentitol, and hexitol; a carbonate; silica; .. The Portland cement, the alumina cement, the quick-setting agent, the viscosity adjusting agent, the setting adjusting agent, and the fine aggregate are mixed from 20 to 60:30 to 70: 10 to 40: 0.1 to 1.0: The hydraulic composition according to claim 1, wherein the hydraulic composition is contained in a mass ratio of 1 to 10: 10 to 40. The hydraulic composition according to claim 1, wherein the hydraulic composition does not contain a delayed fluidizing agent. The hydraulic composition according to any one of claims 1 to 6 causes the hydraulic composition to absorb the water by bringing the fixing agent capsule enclosed in the water-permeable tubular container into contact with water. The step of aggregating the hydraulic composition and
The agglomerated hydraulic composition is taken out from the water-permeable tubular container, placed in a cylinder cartridge having a cylinder tip at the tip and an opening at the base end, and then the inside of the cylinder cartridge is directed toward the cylinder tip in response to pressing. The process of inserting the moving lid through the opening,
A step of pressing the lid to extrude the water-hard composition from the cylinder tip and discharging a curable paste in which the curable composition and the water are mixed to a construction site.
The step of curing the curable paste
A curable paste construction method characterized by having. The step of discharging to the construction site includes a process of injecting into a hole made in the concrete skeleton.
The step of curing the cured paste includes a process of inserting the anchor element into the hole while piercing the cured paste.
The curable paste application method according to claim 7, wherein the anchor element is fixed. A nozzle in which an injection tube with an injection amount indication mark is fitted to the tip thereof is attached to the tip of the cylinder, and the injection tube is inserted into the drilling hole to inject the hydrophilic composition while injecting the injection tube. 8. The eighth aspect of the present invention, wherein the cylinder cartridge is moved in a direction of removal from the drilling hole, and the injection of the water-hard composition is terminated when the injection amount indicating mark appears and disappears from the drilling hole. Curable paste construction method. The curable paste construction according to claim 7, wherein the aggregated water-hard composition is stirred and stirred in the cylinder cartridge, and the water-hard composition is dispersed to prepare the curable paste. Method. The curable paste application method according to claim 7, wherein the water and the fixing agent capsule are brought into contact with each other for 3 to 5 minutes. The curable paste construction method according to claim 7, further comprising a step of cleaning the inner wall surface of the cylinder cartridge after the step of discharging to the construction site. The curable paste application method according to claim 7, wherein the water-permeable tubular container contains paper. A pack having a bag containing the water-hard composition according to any one of claims 1 to 6 and a port for communicating the outside world and the inner space of the bag at the upper end side thereof. , The process of pouring water from the port,
A step of attaching the water-hard composition and a cap that does not allow water to leak to the port and applying an external force to the pack to mix the water-hard composition and the water to prepare a curable paste.
A step of extruding the curable paste from the port and discharging the curable paste from the port to a construction site by crushing the bag body after removing the cap.
The step of curing the curable paste
A curable paste construction method characterized by having. The step of discharging to the construction site includes a process of injecting into a hole made in the concrete skeleton.
The step of curing the curable paste includes a step of inserting the anchor element into the hole while piercing the curable paste.
The curable paste application method according to claim 14, wherein the anchor element is fixed. The curable paste application method according to claim 14, wherein the external force is a pressing force and / or a human force of an instrument. An injection connector in which an injection tube with an injection amount indication mark is fitted to the tip thereof is attached to the port, and the injection tube is inserted into the drilling hole to inject the curable paste while injecting the injection tube. The curing according to claim 15, wherein the pack is moved in a direction of being removed from the hole, and the injection of the curable paste is completed when the injection amount indicating mark appears and disappears from the hole. Sex paste construction method. The curable paste is discharged to the tip of the injection tube, the injection tube is inserted into the hole, the curable paste is injected, and the injection tube is removed from the hole. 17. The injection of the curable paste is completed when the injection amount indicating mark appears and disappears from the drilling hole by moving and pulling up the injection tube itself while squeezing the injection tube. Curable paste application method. The curable paste application method according to claim 17, wherein a curable paste between the inside of the pack and the inside from the pack to the injection amount instruction mark of the injection tube is injected into the drilling hole. 14. Claim 14 characterized in that the water is poured into the pack after the spout nozzle of a bottle containing the required amount of the water for curing the water-hardening composition is fitted into the port. The curable paste application method described in. The curable paste application method according to claim 14, wherein 20 to 40 parts by mass of the water is added to 100 parts by mass of the hydraulic composition. A pack having a bag containing the water-hard composition according to any one of claims 1 to 6 and a port for communicating the outside world and the inner space of the bag at the upper end side thereof. ,
A bottle containing or containing the required amount of water for curing the hydraulic composition, and
A spout nozzle that is attached to or attached to the spout of the bottle to fit into the port and pour the water into the pack.
A kit for applying a curable paste, which is characterized by being equipped. A cap for encapsulating the hydraulic composition and / or a paste obtained by mixing the hydraulic composition with water, which is screwable or fitable into the port.
An injection connector that is screwable or matable to the port and has an injection tube with an injection amount indication mark fitted to the tip.
The curable paste construction kit according to claim 22, which is individually provided. The curable paste construction kit according to claim 22, wherein the kit is for fixing an anchor element. The curable paste construction kit according to claim 22, wherein the bag body contains a maximum of 3000 g of the hydraulic composition.

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