KR100891147B1 - Repairing and reinforcing method of pipe using linear strip-lining - Google Patents

Abstract

Striplining flooring methods are disclosed. A method of repairing and strengthening an existing pipe extending in a predetermined length direction, the method comprising: (a) attaching a fixed hardware to an inner circumferential wall of an existing pipe, and (b) fixing a plurality of strips extending in a length direction at predetermined intervals. Coupling to the iron, (c) closing the inner circumferential wall of the existing pipe by fitting between the plurality of strips with a joiner extending in the longitudinal direction, and (d) injecting filler between the inner circumferential wall and the strip. Striplining flooring method comprising the step of integrating the existing pipe and the strip, by constructing the regeneration pipe by forming the strip in a straight line along the longitudinal direction of the existing pipe, even if the obstacle in the longitudinal direction of the pipeline It is possible to install only a part of the damaged floors and walls, water can be rotated in a single pipeline, construction speed is fast, and easy to install the club.

Strip lining, straight pipe, pipeline reinforcement

Description

Repairing and reinforcing method of pipe using linear strip-lining}

The present invention relates to a striplining flooring process.

The no excavation repair method is a method of forming a new complex pipe in an old buried pipeline without digging the ground when repairing various types of sewer pipes, such as sewer pipes underground. Since it is unnecessary, it is an excellent method in many aspects such as economic feasibility, constructability and convenience. The excavation and replacement of the pipe as a whole is very expensive due to the large scale of construction and the partial repair, etc., which is costly and economically burdensome, and causes additional problems such as traffic jams during the construction period. Excavation repair methods are widely used.

The strip lining method is one of the unexcavated pipeline repairing methods. The lining material made of vinyl chloride is inserted into the existing pipe through the manhole, the lining material is installed inside the pipe, and then the lining material and the lining material are joined. It refers to a method of forming a lining tube by joining using a member for forming a new line, and then injecting filler into the space between the lining tube and the existing installed tube to integrate the lining tube.

In the related art, after a strip is wound into a spiral tube in an existing tube and a tube is recycled, a method of repairing and reinforcing the existing tube has been used by integrating the existing tube and the regenerated tube by filling a filler between the existing tube and the regenerated tube. However, such a conventional 'spiral tube' strip lining method is difficult to install in the case of obstacles in the pipeline or severely damaged floors and walls, there is a problem that can not be turned in the primary pipeline.

On the other hand, new technologies, equipment, and methods are being actively published in the non-excavation repair method, but research on the repair material optimized for each method is much insufficient and the importance is neglected.

Even if the repair method is excellent, if the quality of the repair material applied to the method is not appropriate, the characteristics of the original induction may not be properly expressed, and the repair work may be delayed or many problems may be exposed after the construction. In addition to the appropriate construction method, the development of appropriate remuneration for the construction method should be supported.

As a filler for general unexcavated pipe repair, a thermosetting resin is often used. However, when the thermosetting resin is used as a filler, some problems occur as follows. In other words, most of the existing resins used in the filler is too high viscosity than necessary, so that impregnation is not performed properly when injected into the tube, the required properties and properties do not appear, and a separate process and equipment are required to cure the resin. Long curing time is inefficient in air and hard to control hardening time and workability according to various variables in the field.

The present invention is to provide a straight pipe strip lining flooring (flooring) method that can be installed irrespective of obstacles, damage, etc. in the pipeline by constructing the regeneration pipe in a straight line along the longitudinal direction of the existing pipeline.

According to an aspect of the present invention, a method for repairing and strengthening an existing tube extending in a predetermined length direction, comprising: (a) attaching a fixed hardware to an inner circumferential wall of an existing tube, and (b) a plurality of strips extending in a longitudinal direction (s) joining the strips to the fixture at predetermined intervals, (c) closing the inner circumferential wall of the existing pipe by fitting between the plurality of strips with a longitudinally extending joiner, and (d) the inner circumferential wall A striplining flooring method is provided that includes injecting filler between the strip and the strip to integrate the strip with the existing tube.

If the obstacle extending in the longitudinal direction is protruded in the pipeline of the existing pipe, step (b) may comprise the step of coupling the strip to cover the obstacle. When the inner circumferential wall of the existing pipe is composed of the upper surface portion, the bottom portion and the side portion, step (b) may comprise the step of coupling the strip to the bottom portion and the side portion. On the other hand, step (b) may comprise the step of coupling the strip only to a portion of the inner circumferential wall.

When the inlet pipe flowing from the outside through the inner circumferential wall, prior to step (a), may further comprise the step of constructing the hoisting organ in the longitudinal direction, and connecting the inlet pipe to the hoisting organ . Between step (c) and step (d), the method may further include the step of allowing the push bar to pressurize the strip by coupling the push bar to the existing pipe in a direction crossing the longitudinal direction.

The existing pipe has an inclination from the upstream side to the downstream side, and a plurality of ribs extending in the longitudinal direction protrude from the surface facing the inner circumferential wall of the strip, and step (d) injects the filler from the downstream side to the upstream side. It may include the step.

The existing tube has a rectangular cross section including a top portion, a bottom portion, a side portion, and a haunch portion formed at a portion where the bottom portion and the side portion are in contact with each other, and step (c) extends in the longitudinal direction, and the strip and the bottom portion joined to the side portion. It may include the step of covering the haunchi by installing a finishing material connected to the strip coupled to.

The fixed hardware consists of a body portion and a pair of wings connected to both sides of the body portion, the body portion is in contact with the inner circumferential wall, and includes a long hole perforated so that the anchor bolt is installed on the inner circumferential wall, a pair Each of the wing portions of the may include a hook portion formed in a shape corresponding to the shape of the end of the strip so that the strip is coupled.

Step (b) includes joining the strips to each of the pair of vanes, and step (c) comprises (c1) respectively fitting both sides of the joiner to the ends of the strips respectively joined to the pair of vanes. It may include the step of covering the fixing hardware.

Step (c1) is performed by pressing the joiner with the fitting device and moving the fitting device in the longitudinal direction, the fitting device may include a fitting roller in contact with the joiner and a pneumatic cylinder for pressing the fitting roller toward the joiner. . The fitting device includes a weight body for pressing the pneumatic cylinder in the gravity direction, a support for supporting the weight body, a plurality of wheels coupled to the support for moving the weight body, the pneumatic cylinder and the fitting roller in the longitudinal direction, and the pneumatic cylinder It may further include a control unit for controlling the degree of pressurization and movement of the wheel.

Step (d) is carried out by coupling the distributor to the injection pump to pump the filler material from the injection pump, which dispenses the filler material between the inlet pipe connected to the injection pump and connected to the inlet pipe and between the inner circumferential wall and the strip. The outlet may include a plurality of outlet pipes. At this time, the number of outlet pipes may be calculated such that the sum of the inner diameter cross-sectional areas of the plurality of outlet pipes is greater than or equal to the inner diameter cross-sectional area of the inlet pipe.

The filler composition is composed of a binder comprising 7.5 to 21.4 parts by weight of Calcium Sulfo Aluminate (CSA) and 5 to 14.2 parts by weight of gypsum and 100 parts by weight of cement, an antifoaming agent, accelerator, retardant, fluidizing agent and 5.2 to 11.1 parts by weight of admixture composed of filler, 0.001 to 0.1 parts by weight of cellulose derivative and 0.001 to 0.1 parts by weight of starch derivative, based on 100 parts by weight of the binder and admixture mixture It may include.

The cellulose derivative is at least one selected from the group consisting of ethyl hydroxyyl cellulose (EHEC), hydroxy propyl methyl cellulose (HPMC) and hydroxy ethyl cellulose (HEC). The starch derivative may include any one or more selected from the group consisting of potato starch and corn starch.

The cellulose derivative and the starch derivative may be each 0.01 to 0.05 parts by weight based on 100 parts by weight of the binder and admixture mixture.

Antifoaming agent includes any one or more of glycol-based or silicon-based, accelerators include lithium carbonate (Lithium Carbonate), retardant tartaric acid, gluconic acid and sheet It includes at least one selected from the group consisting of Citric Acid, the fluidizing agent comprises at least one of polycarbonate-based or melamine-based, the filler is at least one of silica fume or slag It may include.

According to a preferred embodiment of the present invention, by constructing the regeneration pipe by forming the strip in a straight line along the longitudinal direction of the existing pipeline, even if the obstacle in the longitudinal direction of the pipeline can be installed, the damaged part of the floor and wall severely It can be installed only in the water, and it is possible to turn water in a single pipeline, and the construction speed is fast, and it is easy to install clubs.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1a is a flow chart showing a striplining flow method according to a preferred embodiment of the present invention, Figure 1b is a perspective view showing a state in which the construction of the striplining flow method according to an embodiment of the present invention. Referring to FIG. 1B, an existing tube 1, a strip 10, a joiner 12, a spacer 14, and a filler 20 are shown.

This embodiment supplements the disadvantages of the strip lining (SL) method, which was conventionally constructed by forming the strip 10 in a spiral form, and constructs the regeneration tube by constructing the strip 10 in a straight line along the longitudinal direction of the existing pipe. Characterized in that formed.

That is, the present embodiment is a method for repairing and strengthening the existing pipe (1) extending in the longitudinal direction from the upstream side to the downstream side, first attaching a fixed hardware to the inner circumferential wall of the existing pipe (100), the existing pipe By arranging the strips 10 extending along the longitudinal direction of (1) at regular intervals and joining them to the fixed hardware (110), the inner circumferential wall of the existing pipe (1) is lined with the strips (10).

A gap between the strips 10 installed on the inner circumferential wall of the existing pipe 1 is fitted using the joiner 12 (120). As a result, the inner circumferential wall of the existing pipe 1 is finished with the strip 10 and the joiner 12. The joiner 12 extends along the lengthwise direction in which the existing pipe 1 is installed, like the strip 10. Lastly, in order to integrate the existing pipe 1 and the pipe line produced by the strip 10, the filler 20 is injected into the space between the existing pipe 1 and the strip 10 (130). As a result, the straight line-type striplining pipeline repair and reinforcement method, that is, the flooring method, according to the present embodiment is completed. Each detailed step of FIG. 1A will be described later.

Existing pipe (1) repaired by the strip lining method as shown in Figure 1b. That is, a new regeneration tube is formed by the strip 10 and the joiner 12 in the existing tube 1, and the filler 20 is filled between the existing tube 1 and the regeneration tube to be integrated into one. If it is necessary to secure a certain amount of space between the existing tube 1 and the regeneration tube strabismus for the injection of the filler 20, the cover of the obstacle, and the like, the spacer 14 is placed at a desired position as shown in FIG. 1B. You can also install it first and construct a striplining regeneration tube.

Figure 2 is a cross-sectional view showing a state in which the construction of the striplining flow method according to an embodiment of the present invention. Referring to FIG. 2, there is shown an existing pipe 1, a separating wall 3, a communication pipe 5, a strip 10, and a filler 20.

Strip lining method according to this embodiment can be installed even if the obstacle in the longitudinal direction of the pipe. If there is a obstacle in the longitudinal direction by the conventional spiral tube manufacturing method, it is impossible to construct without dismantling it, but the straight tube manufacturing method according to the present embodiment has a communication bureau 5 or the like installed in the longitudinal direction in the pipeline or The construction is possible even when the sewage separation wall 3 is provided.

That is, even when the sewage separation wall 3 protrudes in the longitudinal direction in the pipeline of the existing pipe 1, as shown in FIG. Since 10) is installed (112) to close the dividing wall (3) to be able to produce a striplining regeneration tube.

On the other hand, since this embodiment is a method of repairing and strengthening the damaged existing pipe (1), it is possible to construct only a part of the floor or the wall particularly severe damage of the inner circumferential wall of the existing pipe (1). In the case of general pipelines, only the floor where water is always flowing and the wall up to a certain height are damaged in time. However, the conventional spiral pipe fabrication method only repairs the entire inner wall of the pipeline. Repairs were made to the upper parts that were not needed.

However, the straight pipe manufacturing method according to the present embodiment can selectively repair only a desired portion of the inner circumferential wall of the existing pipe (1). For example, when the inner circumferential wall of the existing pipe (1) is a rectangular cross section consisting of the upper surface, the bottom and the side portion as shown in FIG. 2, the strip 10 may be constructed only up to a portion of the bottom portion and the side portion, which are severely damaged. (114, 116). Thus, this embodiment can be applied to the repair of only part of the inner circumferential wall of the existing pipeline, there is an advantage that it can be easily applied to the open space occupying most of the agricultural channel.

3 is a cross-sectional view showing a state in which the water turning construction during the striplining flow method construction process according to an embodiment of the present invention. Referring to FIG. 3, there is shown an existing tube 1, an inlet tube 7, a strip 10, a joiner 12, a spun tube 30, and a connecting tube 32.

Striplining method according to the present embodiment can be installed in the water pipe in a single pipeline. Basically, sewage pipes, etc., have a lot of pollutants in the flowing water itself, but even if the pipes are washed later, when the sewage flows, the construction surface is bound to be contaminated. Therefore, in the process of striplining construction, it is possible to secure the quality required for designing by turning the water in advance.

In the conventional spiral fabrication method, to spin in a single culvert, the method was not smooth, such as using the space of the haunting part of the existing pipe 1 or using the reinforcing part of the floor. However, in the straight pipe manufacturing method according to the present embodiment, as shown in FIG. 3, striplining can be performed even in a state in which a water atomizing engine 30 such as a THP pipe is temporarily installed in a pipeline, and an existing pipe 1 Even when the inflow pipe (7), which is a passage through which filthy water flows from outside, is formed, the wastewater that becomes a source of pollution by simply joining the inflow pipe (7) and the water turning engine (30) with the connection pipe (32). Strip lining can be installed without any

That is, in order to secure a work space free of contamination by water turning in the present embodiment, before the construction, the water turning engine 30 is installed along the longitudinal direction of the existing pipe 1 (80), and the existing pipe (1) By connecting the inlet pipe (7) formed in the installed waterway trachea 30 (90) so that the sewage flowing in the middle is discharged through the waterway trachea (30).

On the other hand, the straight pipe manufacturing method according to the present embodiment has the advantage that the construction speed is fast. That is, during the construction process, striplining can be performed while accepting such bends or steps as it is, regardless of the bend or step of the inner circumferential wall of the existing pipe (1), and the straight strip 10 having a unit length is the length of the existing pipe (1). It can be constructed while pasting in the direction, and because the weight of the strip 10 is light, the linear member can be pre-assembled at the bottom by a predetermined area and then lifted up and attached to the desired position.

Figure 4a is a cross-sectional view showing a state in which the copper bar installed in the striplining flow method according to an embodiment of the present invention, Figure 4b is a partially enlarged view showing an enlarged portion of the copper bar in Figure 4a, Figure 4c It is a photograph taken the test construction state which installed the wooden club. 4a to 4c, there is shown an existing pipe 1, anchor bolt 8, reinforcing bar 9, strip 10, C-shaped steel 16.

The straight pipe manufacturing method according to the present embodiment can facilitate the installation of a group for the installation and fixing of the strip (10). That is, as shown in FIG. 4a, the reinforcing bar 9 and the fixing anchor bolt 8 are installed on the inner circumferential wall of the existing pipe 1, and after the strip 10 is finished, the push bar of the pipe or the C-shaped steel 16, etc. ) Is fixed to the anchor bolt 8 in the direction intersecting the strip 10 so that the push bar presses the strip 10 so as to easily fix the strip 10 without installing a separate structure. The club will be able to install.

The cross-sectional details in the case where the C-shaped steel 16 is installed as the copper bar according to the present embodiment are shown in FIG. 4B, and the construction state when the wooden copper bar is installed instead of the C-shaped steel 16 is as shown in FIG. 4C.

On the other hand, in the case of the straight pipe manufacturing method according to the present embodiment, in order to completely integrate the strip pipe and the existing pipe (1), it is good to suppress unnecessary voids in the filling process 20 to be described later filling process. Since most pipes basically have a slope from the upstream side to the downstream side, filling of the filler 20 toward the upstream side from the downstream side can suppress generation of voids. At this time, if there is still a possibility of voids due to bubbles not being taken out at the upstream, it is possible to solve the problem by various methods such as removing bubbles at this part or constructing only a part of the upstream side in a spiral tube manufacturing method. .

Figure 5 is a photograph taken the test construction site of the striplining floring method according to an embodiment of the present invention, Figure 6a is a photograph taken a cross-section of the reinforcement reinforcement during the test construction shown in Figure 5, Figure 6b The photograph taken of the floor construction unit during the test construction shown in FIG. 6A and 6B, an existing tube 1, a strip 10, a rib 11, a joiner 12, and a filler 20 are shown.

In order to determine the field applicability of the striplining floring method according to this embodiment, a test construction was conducted privately. For the test construction, reinforcement and spacer 14 are installed on the maintenance section and the reinforcement section by using anchors and knife blocks in a precast concrete box culvert 3m in width and 2m in height, respectively. 'Straighten the strip 10 by using a knife block fitted with the strip 10 in a straight line and a waterproof washer for slate, and after installing the wood club, as shown in Fig. 6a between the strip 10 and the box culvert The 'SL-100' mortar was charged to the space as shown in FIG. 6B using a silo system.

In the case of the 'SS-01' strip 10 used in the test construction, the thickness is thin and its own rigidity may be weak, so that deformation such as irregularities may occur in the strip tube when fixing the anchor, installing the copper bar, and filling. In this case, deformation may be prevented by using 'TS-01' having a thicker cross-section thickness of 17.5 mm or 'RS-01' strip 10 having an iron core on the cross-section.

Meanwhile, in the present embodiment, the ribs 11 of the strip 10 are formed in the longitudinal direction along the longitudinal direction of the pipe line, and when there is no slope in the pipe line such as the test construction section, a gap of about 5 mm to 10 mm is formed at a part of the bottom. In this case, if the air is filled upstream while completely filling the air gap at the lowermost downstream side, the air gap will not occur at most construction sections.

In the actual site, the existing pipe 1 mostly has an inclination from the upstream side to the downstream side, and as shown in FIG. 6B, when a plurality of ribs 11 protrude in the longitudinal direction on the back surface of the strip 10. By injecting the filler material 20 from the downstream side to the upstream side of the pipe 132, the filler 20 can be completely filled without unnecessary voids in the space between the strip 10 and the existing pipe 1. have.

Figure 7a is a cross-sectional view showing the haunch finish state in the striplining flow method according to the first preferred embodiment of the present invention, Figure 7b is a haunch portion closed state in the striplining flow method according to the second preferred embodiment of the present invention Figure 7c is a cross-sectional view, Figure 7c is a cross-sectional view showing the haunting portion closed state in the striplining flow method according to a third preferred embodiment of the present invention, Figure 7d is a photograph taken a haunchi tested in accordance with the embodiment of Figure 7c to be. Referring to FIGS. 7A-7D, an existing pipe 1, a haunch 2, a reinforcing bar 9, a strip 10, a flexible joiner 12a, and a finish 13 are shown.

In the striplining flow method according to the present embodiment, the haunting portion 2 of the existing pipe 1 may be finished using the flexible joiner 12a and the strip 10 as shown in FIG. 7A. However, for example, when using the strip 10 having a unit width of 250mm, it may be difficult to accurately finish along the inner circumferential wall of the existing pipeline as shown in Figure 7b.

7A and 7B do not have a big problem in the reinforcement of the existing pipeline, but if necessary, such as when the cross section of the regeneration pipe is reduced too much, if necessary, except for the haunche (2) as shown in Figure 7c After finishing the strip 10 on the remaining portion, it is also possible to finish the haunche (2) using a finishing material 13, such as PVC panels (124). In this case, if the mold of the finishing material 13 is determined according to the shape of the existing pipe 1, and the mold is produced and extruded in advance, the appearance can be easily and cheaply finished.

As shown in FIG. 7D, the finishing material 13 extends in the longitudinal direction of the existing pipe 1 like the strip 10, and the strip 10 of the side part and the strip 10 of the bottom part to cover the haunch part 2. Connect with Since the finish 13 also becomes part of the striplining regeneration tube, the finish 13 and the strip 10 should be sealed to prevent the filler 20 from leaking.

8 is a view showing a state in which the strip fixing hardware and the fixing hardware used in the striplining flow method according to an embodiment of the present invention, Figure 9 is a striplining flow method according to a preferred embodiment of the present invention This is a picture taken with the strip fixing hardware used in the installation. 8 and 9, the anchor bolt 8, the fixing hardware 9 ′, the body portion 9a, the wing portion 9b, the long hole 9c, the strip 10, the locking jaw 10a, Joiner 12 is shown.

In the striplining flow method according to the present embodiment, the fixing of the strip 10 is performed by installing the strip 10 on the fixed hardware 9 ′ formed by reinforcing the reinforcing bars 9 as shown in FIGS. 4A and 4B. ), Or a method of applying a group of copper wires may be used. Also, separately designed hardware for fixing the strip 10 may be used as shown in FIGS. 8 and 9.

The fixed hardware 9 'consists of a body portion 9a and a pair of wings 9b connected to both sides of the body portion 9a. The body portion 9a is an anchor installed in the existing pipe 1. It is a part that is fixed to the existing pipe (1) through the bolt (8), the wing portion (9b) is a portion that tightly the strip (10). A long hole 9c is perforated in the body portion 9a so that the anchor bolt 8 installed in the existing pipe 1 can pass therethrough. The fixing hardware 9 'is fixed to the inner circumferential wall of the existing pipe 1 by holding an appropriate position and fixing the nut in the state where the anchor bolt 8 penetrates the body portion 9a through the long hole 9c.

A pair of wing portions 9b extending from both sides of the body portion 9a are formed with hook portions, so that the strip 10 can be tightly connected to the fixed hardware 9 '. That is, the hook portion formed on the wing portion 9b is formed in an appropriate shape according to the shape of the end portion of the strip 10. If the catching jaw 10a is formed at the end portion of the strip 10 as shown in FIG. It is to form a hook portion in a shape that can accommodate the jaw (10a).

As described above, the strip fixing hardware 9 ′, which is separately designed in the present embodiment, has a structure that can be fitted in accordance with the locking jaw 10a of the strip 10, thereby fixing the locking jaw 10a of each strip 10. (9 ') is fixed to the anchor bolt (8') by fastening the fixing hardware (9 ') to the anchor bolt (8) using a nut, and then joining the strip (10') with the joiner (12). At the same time to cover the inner circumference of the existing pipe (1) can be smoothly finished.

As a result, the strip 10 may be fixed to the existing pipe 1 without a perforation for fixing the strip 10 to the surface 10 so that the surface may be smoothly finished. In addition, when fixing the strip 10 directly to the existing pipe (1) by using a separately designed fixed hardware (9 '), the placing pressure applied to the strip 10 in accordance with the injection of the filler 20 fixed steel (9) ') By receiving, the fixed hardware (9') can replace the role of the copper bar of Figures 4a and 4b it is possible to reduce the construction cost according to the separate copper bar installation.

In the striplining method using the fixing hardware 9 'according to the present embodiment, first, the anchoring bolt 8 is installed in accordance with the fixing position, and the fixing hardware 9' is installed using the washer and the nut. After installing the strip 10 while fitting the grooves of the strip 10 to the fixing hardware 9 ', it proceeds in the order of fitting the installed strip 10 to the joiner 12.

10 is a view showing a pneumatic device for fitting the joiner 12 used in the striplining flow method according to an embodiment of the present invention. Referring to FIG. 10, the existing pipe 1, the strip 10, the joiner 12, the fitting device 40, the fitting roller 42, the pneumatic cylinder 44, the weight body 46, and the support 48. , Wheel 50, control unit 52 is shown.

In the striplining flow method according to the present embodiment, a joiner 12 fitting device 40 designed to fit the joiner 12 to the space between the strips 10 may be used. If a separate device is not used, a hammer is applied to fit the joiner 12 to connect the strip 10. In this case, the construction speed is slow and damages the strip liner. Poor fitting can also lead to leakage of filled mortars.

The fitting device 40 according to the present embodiment is provided with a fitting roller in the pneumatic cylinder 44, so that the joiner 12 can be automatically and uniformly fitted by the pressing force of the pneumatic cylinder 44. . That is, the joiner 12 fitting process according to the present embodiment is performed by moving the fitting device 40 along the longitudinal direction of the existing pipe 1 in a state in which the joiner 12 is pressed by the fitting device 40 ( 122).

The above-described fitting device 40 is a pneumatic cylinder 44 for pressing the fitting roller 42 and the fitting roller 42 to press the joiner 12 to fit between the strips 10 toward the joiner 12. It is configured with a basic structure. As shown in (a) of FIG. 10, when fitting the strip 10 installed on the floor or fitting the strip 10 of a predetermined area on the floor and then installing it on the wall or ceiling, the fitting device 40 is a pneumatic cylinder ( It further comprises a weight 46 for pressing 44 in the direction of gravity, which weight 46 is supported on the strip 10 by a support 48 supporting it and a wheel 50 coupled to the support 48. It becomes movable.

When the joiner 12 is moved along the longitudinal direction of the existing pipe 1 while the joiner 12 is pressed by the fitting device 40 pressurized in the gravity direction by the weight 46, the joiner 12 is interposed between the strips 10. Is fitted automatically. In addition, by controlling the movement of the fitting device 40 and the degree of pressurization of the pneumatic cylinder 44 through the control unit 52, as shown in FIG. It can be done with

11 is a photograph of a filler (filling mortar) distributor used in the striplining flow method according to an embodiment of the present invention. Referring to FIG. 11, a distributor 60, inlet pipe 62, and outlet pipe 64 are shown.

In the striplining flow method according to the present embodiment, a distribution mortar for filling mortar 60 may be used.

In all types of transfer pumps, the transfer capacity is determined by various factors such as the viscosity of the conveyed material, the inner diameter of the conveying pipe, the conveying distance, the conveying head, and the inner diameter of the conveying pipe. In particular, mortar has a high viscosity of the fluid and a long distance for conveying, so it is sometimes necessary to secure an inner diameter of the conveying pipe of 1 1/2 "or more. It may be difficult to install an injection port in the space between the pipe 1 and the strip pipe, and in some cases, a transfer pipe having a smaller diameter of 3/4 "or less may be installed.

In this case, when the diameter of the inlet is smaller than that of the feed pipe connected to the pump, the pumping pressure may act as a load. In order to eliminate the load, as shown in FIG. Distributor 60 may be used to combine a plurality of 3/4 "feed pipes.

That is, the filler 20 injection process according to the present embodiment may be performed by coupling the dispenser 60 designed to the injection pump to pump the filler 20 from the injection pump (134). The distributor 60 includes an inlet pipe 62 connected to the injection pump and a plurality of outlet pipes 64 connected to the inlet pipe 62. The filler 20 pumped through the inlet pipe 62 is injected into the space between the inner circumferential wall and the strip 10 through the plurality of outlet pipes 64.

That is, in order to prevent the load from occurring as the diameter of the outlet pipe 64 is reduced compared to the inlet pipe 62, a plurality of outlet pipes 64 are connected, and the number of outlet pipes 64 is The sum of the inner diameter cross-sectional areas of the plurality of outlet pipes 64 is calculated to be greater than or equal to the inner diameter cross-sectional area of the inlet pipe 62.

Hereinafter, the filler composition used in the striplining floring method according to the present embodiment will be described.

12A is a structural diagram showing the molecular structure of amylose in the Starch derivative of the filler used in the striplining floring method according to an embodiment of the present invention, Figure 12b is a preferred embodiment of the present invention FIG. 13 is a structural diagram showing the molecular structure of amylopectin in the Starch derivative of the filler used in the striplining floring method according to the present invention, FIG. 13 is a structural diagram showing the side chain structure of the amylopectin of FIG. 12B, and FIG. 14 is a preferred embodiment of the present invention. A structural diagram showing the molecular structure of a cellulose (Cellulose) derivative of the filler used in the striplining floring method according to the embodiment.

According to the striplining flow method according to the present embodiment, the space between the strip and the existing pipe, which is a construction site where the filler is to be injected, has a narrow filling cross section and a long filling depth and length. Accordingly, the filler composition used in this embodiment should be excellent in filling properties and no material separation. As such, the filling material usable in the striplining method can be largely classified into 'one-part' of mortar type and 'two-part' which is used by mixing the main material and the hardener in the field.

In case of 1-part type, sufficient pot life (Open time) is secured, filling time is secured, and it has the advantage that it is advantageous for the work of long section. There is also.

In the case of two-component type, the initial grain is less than 10 minutes, so it has a fast setting time, there is no problem of material separation, and it is a slurry type which has the advantage of excellent filling in a short section. In addition, since the main material and the hardener are mixed in the field, construction is complicated and there is a possibility of quality deviation.

The problem of material separation is caused by an increase in the amount of unnecessary units to secure workability in addition to the water used for the hydration reaction, and structural problems such as strength degradation and shrinkage cracking due to increased material separation may occur when the amount of unit increases. have.

Accordingly, coarse aggregate may be used for the purpose of reducing the unit quantity, and material separation may be prevented by providing a viscosity using a thickener of a cellulose derivative to prevent material separation. However, when the thickener is expressed using a cellulose derivative, the viscosity may be excessively expressed even in the minute change of the amount used, and the fluidity may be markedly reduced to secure a predetermined permeability. In addition, if the amount used is too small, the characteristics may not be properly exhibited, but material separation may occur.

Existing one-part fillers sometimes take material separation to ensure fluidity.

The two-component type composed of the main material and the hardening material is intended to compensate for the shortcomings of the conventional one-part type. By curing the filler before the material separation occurs, it is possible to express physical properties early and prevent material separation. However, the two-component type may sometimes be difficult to mix and mix at a constant mixing ratio during site construction, resulting in quality deviation and cumbersome construction.

The filler used in this embodiment is a type that complements all of the above-mentioned problems, and is suitable for both short and long working periods by ensuring sufficient pot life, and high flow rate and no material separation, and variations in quality. 'Improved one-part' type, which hardly occurs, can be used.

That is, the filler composition according to the present embodiment is based on a binder, a material separation inhibitor and a admixture, the cement, CSA (Calcium Sulfo Aluminate) and gypsum as a binder, Starch (Amylose) as a material separation inhibitor Complexes of + Amylopectin derivatives and Cellulose (Polyglucose) derivatives may be used as admixtures such as antifoaming agents, accelerators, retardants, glidants and fillers.

Among the cellulose derivatives, at least one of ethyl hydroxytyl cellulose (EHEC), hydroxy propyl methyl cellulose (HPMC), and hydroxy ethyl cellulose (HEC) A starch derivative may be used as Potato starch, or Corn Starch, or Potato starch and Corn Starch.

Looking at each of the components used as admixtures in more detail, glycol (Glycol) or silicon (Silicon) may be used as an antifoaming agent, lithium carbonate (Lithium Carbonate) may be used as an accelerator, tartaric acid (Tartaric) as a retarder acid), gluconic acid, and citric acid may be used. As the fluidizing agent, polycarbonate-based or melamine-based may be used, and silica filler or slag may be used as the filler. Each component of the above-described admixture may be used alone as well as may be used in combination of two or more, so long as it does not contradict its chemical properties.

The binder of the filler composition according to the present embodiment has a function of expressing a predetermined compressive strength and forming an expandable material 'Ettringite' as a non-shrinkable material, and the material separation inhibitor has a superfluid property but does not have material separation. It acts to form.

Examples of the mechanism of action of the binder include strength expression by hydration reaction of cement and shrinkage compensation by reaction of three-component system.

Strength expression by hydration of cement is 'CSH-gel' formation reaction, and the specific reaction formula is as follows.

(1) Hydration of C3S

: 2 (3CaOSiO2) + 6H2O → 3CaO · 2SiO2 · 3H2O (CSH-gel) + 3Ca (OH) 2

(2) C2S hydration reaction

2 (2CaOSi0 2) + 4H 2 O → 3CaO 2SiO 2 3H 2 O + Ca (OH) 2

Shrinkage compensation by the reaction of the three-component system is a reaction in which the expandable material 'Ettringite' is formed, the specific reaction formula is as follows.

C3A + 3CH + 3S + 29H → C3A, 3CS, 32H (Ettringite)

(C = CaO, A = Al2O3, CH = Ca (OH) 2, S = SO3, H = H2O)

As a characteristic of each constituent of the material separation inhibitor, Starch derivatives have a molecular structure (-CH2OH) arranged in one direction as shown in FIGS. 14A and 14B and are twisted when dispersed in water. It has a coil structure, and this molecular structure leads to a decrease in dispersibility, so that viscous expression is weak. However, Amylopectin, a constituent of Starch, exhibits a highly developed three-dimensional structure with side chains, and thus exhibits resistance to material separation due to steric hindrance.

Next, the cellulose derivative (Cellulose) is cross-arranged in the reactor (-CH2OH), when dispersed in water, it is well spread in a linear structure (Linear structure) shows a uniform dispersibility, which shows a strong characteristic for viscosity expression. On the other hand, cellulose derivatives do not develop side chains, so there is little screen action due to steric hindrance.

When comparing the properties of the starch and cellulose used in the filler composition according to the present embodiment are shown in Table 1 below.

[Table 1] Comparison of characteristics of Starch and Cellulose

Starch Cellulose rescue Structure Chain structure characteristic -Side chain structure-Adhesion weakness-Characteristic control according to processing method-Hardening time effect sound-Slumploss low (= housework time) -Linear structure-High adhesion-Viscosity change according to molecular weight-Hardening time delay in hydraulic materials-Large slump loss

The principle of action of the material separation inhibitor is that the viscosity is weakly expressed by using a small amount of cellulose derivative thickener to secure sufficient fluidity, and the fine material separation is prevented by Starch derivatives. It can be called a separation inhibitor.

Therefore, the filler composition according to the present embodiment, the binder consisting of cement, CSA and gypsum, the admixture consisting of an antifoaming agent, an accelerator, a retarder, a fluidizing agent and a filler, and a material separation consisting of cellulose derivatives and starch derivatives It consists of an inhibitor.

In the binder, CSA and gypsum may be used in an amount of 7.5 to 21.4 parts by weight for CSA (Calcium Sulfo Aluminate), 5 to 14.2 parts by weight for gypsum, and 10 to 40 parts by weight for CSA and gypsum mixture.

Cellulose derivatives and starch derivatives, which are anti-separation agents, may be used in an amount of 0.001 to 0.1 parts by weight based on 100 parts by weight of the binder and admixture, respectively, and in some cases, 0.01 to 0.05 parts by weight based on 100 parts by weight of the binder and admixture mixture. It is more preferable.

Aggregate may be used in the filler composition as needed, and the admixture may be used in an amount of 5.2 to 11.1 parts by weight based on 100 parts by weight of the binder, and 1 to 5 parts by weight based on 100 parts by weight of the binder and the aggregate mixture.

The filler composition according to the present embodiment having such a compounding ratio may be used by adding water with respect to 100 parts by weight of the total mixture. Hereinafter, two examples of the filler composition configured according to the above-described compounding ratio and four comparative examples For example, look at the properties of each case of filler.

As the characteristic values of the fillers in each case, flow, bleeding, material separation and surface condition, condensation and compressive strength were examined. The measurement of each characteristic value was performed according to the following method.

The flow was measured according to the consistency test method of the injection mortar of KS F 2432, and the values after 0 minutes and stationary 30 minutes were measured, and the bleeding is the test method of the bleeding rate and expansion rate of the injection mortar of KS F 2433. It measured according to '.

The material separation and surface condition were measured by visual observation, and the condensation was measured according to KS L 5108's Test Method for Condensation of Hydraulic Cement by Vicat Needle.The compressive strength of KS F 2426 was determined by the compressive strength of injection mortar. It was measured according to the test method.

(1) Example 1

Example 1 is a formulation of 'slurry type', in which cement 70, CSA 15, gypsum 10, admixture 5, cellulose derivative 0.05, starch derivative 0.05 and water 30 are added, and aggregate is not added, and the flow is 0. 9 seconds to 30 minutes to 12 seconds, no material separation, bleeding, and no bubble or crack on the surface. The setting time was 115 minutes for the first time, 230 minutes for the final time, and the compressive strength was measured as 598 N / mm2. It can be seen that good.

(2) Example 2

Example 2 is a 'mortar type' formulation incorporating cement 40, CSA 3, gypsum 2, admixture 5, aggregate 50, cellulose derivatives 0.01, starch derivatives 0.01 and water 18 as parts by weight, with a flow of 0 to 12 minutes. Seconds, 30 minutes to 16 seconds, there was no material separation, bleeding and bubbles or cracks on the surface, the setting time was set to 95 minutes, 190 minutes to finish, and the compressive strength was measured as 603N / mm2, as in Example 1 It can be seen that the physical properties are good.

(3) Comparative Example 1

Comparative Example 1 is a formulation in which no starch derivative is added to compare the action of the starch derivative with respect to Example 1 of the slurry type.

Comparative Example 1 is a formulation in which, like parts 1, cement 70, CSA 15, gypsum 10, admixture 5, cellulose derivative 0.05 and water 30, but no starch derivative is added, the flow is 0 minutes Eight seconds, 30 minutes to 10 seconds appeared, the setting time of the first 135 minutes, the termination could not be measured, the compressive strength was measured as 562N / mm2.

In the case of Comparative Example 1, material separation occurred, fines floated on the surface, bleeding was measured at 0.2%, fine plastic cracking occurred on the surface, and unmarked suspended matter appeared on the surface during the termination measurement. Appeared to be left. That is, it can be seen that the use of the filler composition according to the present embodiment is difficult when the starch derivative for preventing material separation is not added.

(4) Comparative Example 2

Comparative Example 2 is a formulation in which no cellulose derivative is added to compare the action of the cellulose derivative with respect to Example 1 of the slurry type.

Comparative Example 2 is a formulation in which, like parts 1, cement 70, CSA 15, gypsum 10, admixture 5, starch derivative 0.05 and water 30, but no cellulose derivative is added, the flow is 0 minutes Eight seconds, 30 minutes to 9 seconds appeared, the setting time was 145 minutes, the finish could not be measured, the compressive strength was measured as 545N / mm2.

In the case of Comparative Example 2, material separation occurred severely, the bleeding was measured at 0.4%, and the surface state was found to be more severe than that of Comparative Example 1. That is, it can be seen that it is difficult to use the filler composition according to the present embodiment when the cellulose derivative is not added to ensure fluidity.

(5) Comparative Example 3

Comparative Example 3 is a formulation in which the cellulose derivative is added in excess of the blending ratio according to the present Example and the starch derivative is not added for Example 1 of the slurry type.

Comparative Example 3 is a formulation in which cement 70, CSA 15, gypsum 10, admixture 5, cellulose derivative 0.15, and water 30 are added as parts by weight, and starch derivative is not added. At 23 seconds and 30 minutes at, measurement was impossible, condensation time was measured at 55 seconds, termination at 135 minutes, and compressive strength at 611 N / mm2.

In the case of Comparative Example 3, it was determined that there was no material separation and bleeding, but the initial workability was poor, but the workability was suddenly lost, and the marks were left as they were when they were bubbled due to excessive bubbles on the surface. In other words, when an excessive amount of cellulose derivative for ensuring fluidity is added, it can be seen that it is difficult to use the filler composition according to the present embodiment.

(6) Comparative Example 4

Comparative Example 4 is a formulation in which no starch derivative is added to compare the action of the starch derivative with respect to Example 2 of the mortar type.

Comparative Example 4 is a formulation in which, like parts 2, cement 40, CSA 3, gypsum 2, admixture 5, aggregate 50, cellulose derivative 0.01 and water 18, but without the addition of starch derivative, the flow is From 0 minutes to 11 seconds, from 30 minutes to 14 seconds, the setting time was 125 minutes, the final time could not be measured, and the compressive strength was measured as 584 N / mm2.

In the case of Comparative Example 4, material separation occurred, the bleeding was measured at 0.05%, and a fine plastic crack was generated on the surface, which showed the same phenomenon as in Comparative Example 1. That is, it can be seen that the use of the filler composition according to the present embodiment is difficult when the starch derivative for preventing material separation is not added.

Hereinafter, the compounding ratio and measured characteristics of the two examples and the four comparative examples described above are summarized as shown in Table 2 below.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 combination cement 70 40 70 70 70 40 CSA 15 3 15 15 15 3 gypsum 10 2 10 10 10 2 Admixture 5 5 5 5 5 5 aggregate 0 50 0 0 0 50 Cellulose derivatives 0.05 0.01 0.05 0 0.15 0.01 Starch derivative 0.05 0.01 0 0.05 0 0 water 30 18 30 30 30 18 characteristic Flow (seconds) 0 min 9 12 8 8 23 11 30 minutes 12 16 10 9 Not measurable 14 Material separation none none Differential Excessive derivative none Differential Bleeding (%) 0 0 0.2 0.4 0 0.05 Surface condition No bubbles, cracks No bubbles, cracks Microcracks Excessive microcracks Excessive bubbles Microcracks Condensation (min) First 115 95 135 145 55 125 closing 230 190 Not measurable Not measurable 135 Not measurable Compressive strength (N / mm ² ) 598 603 562 545 611 584

Figure 1a is a flow chart showing a striplining flow method according to an embodiment of the present invention.

Figure 1b is a perspective view showing a state in which the construction of the striplining floring method according to an embodiment of the present invention.

Figure 2 is a cross-sectional view showing a state in which the construction of the striplining flow method according to an embodiment of the present invention.

Figure 3 is a cross-sectional view showing a state in which the water turning construction during the striplining flow method construction process according to an embodiment of the present invention.

Figure 4a is a cross-sectional view showing a state in which the copper bar installed in the striplining flow method according to an embodiment of the present invention.

Figure 4b is a partially enlarged view showing an enlarged portion of the combined group in Figure 4a.

Figure 4c is a photograph taken a test construction state installed wooden clubs.

Figure 5 is a photograph taken a test construction site of the striplining floring method according to an embodiment of the present invention.

Figure 6a is a photograph taken a cross section of the reinforcement reinforcement during the test construction shown in FIG.

Figure 6b is a photograph of the floor construction during the test construction shown in FIG.

Figure 7a is a cross-sectional view showing the haunchi finish state in the striplining flow method according to the first embodiment of the present invention.

Figure 7b is a cross-sectional view showing the haunchi finish state in the striplining flow method according to a second embodiment of the present invention.

Figure 7c is a cross-sectional view showing the haunchi finish state in the striplining flow method according to a third embodiment of the present invention.

Figure 7d is a photograph taken a haunting portion tested in accordance with the embodiment of Figure 7c.

8 is a view showing a state in which the fixing strips and the fixing hardware used in the striplining flow method according to an embodiment of the present invention.

Figure 9 is a photograph taken a state in which the strip fixing hardware used for striplining flow method according to an embodiment of the present invention installed.

10 is a view showing a joiner pneumatic device used in striplining flow method according to an embodiment of the present invention.

11 is a photograph of a filler (filling mortar) distributor used in the striplining flow method according to an embodiment of the present invention.

12A is a structural diagram showing the molecular structure of amylose in the Starch derivative of the filler used in the striplining floring method according to an embodiment of the present invention.

Figure 12b is a structural diagram showing the molecular structure of amylopectin in the Starch derivative of the filler used in the striplining floring method according to an embodiment of the present invention.

Figure 13 is a structural diagram showing the side chain structure of the amylopectin of Figure 12b.

14 is a structural diagram showing the molecular structure of the cellulose (Cellulose) derivative of the filler used in the striplining floring method according to an embodiment of the present invention.

Claims (18)

As a method of repairing and strengthening an existing pipe extending in a predetermined length direction, (a) attaching a fixing iron to an inner circumferential wall of the existing pipe; (b) coupling a plurality of strips extending in the longitudinal direction from which the existing pipe extends to the fixing hardware at predetermined intervals; (c) closing the inner circumferential wall of the existing tube by fitting between the plurality of strips with a joiner extending in the longitudinal direction in which the existing tube extends; And (d) injecting filler between the inner circumferential wall and the strip to integrate the existing tube and the strip; The existing pipe has an inclination toward the downstream side from the upstream side, On the surface opposite to the inner circumferential wall of the strip, a plurality of ribs extending in the longitudinal direction in which the existing pipe extends protrude, And said step (d) comprises injecting said filler from said downstream side toward said upstream side. delete delete The method of claim 1, An obstacle extending in the longitudinal direction in which the existing tube extends is protruded in the pipeline of the existing tube, and the step (b) includes coupling the strip to cover the obstacle. Strip lining floring method. The method of claim 1, The inner circumferential wall of the existing pipe is composed of an upper surface portion, a bottom surface portion and a side portion, The step (b) comprises the step of coupling the strip to the bottom portion and the side portion striplining floring method. The method of claim 5, And said step (b) comprises coupling said strips only to a portion of said inner circumferential wall. The method of claim 1, The inner circumferential wall penetrates the inlet pipe flowing from the outside, Before step (a) above, Constructing a conduit in a longitudinal direction in which the existing pipe extends; And And connecting the inlet pipe to the water donor engine. The method of claim 1, Between the step (c) and the step (d), And coupling the push bar to the existing pipe in a direction crossing the longitudinal direction in which the existing pipe extends, thereby causing the push bar to pressurize the strip. The method of claim 1, The existing pipe has a rectangular cross section including an upper surface portion, a bottom portion, a side portion and a haunch portion (the haunch portion is formed in a portion where the bottom portion and the side portion contact), The step (c) includes the step of covering the haunch by installing a finishing material extending in the longitudinal direction in which the existing pipe is extended, the strip coupled to the side portion and the strip coupled to the bottom portion; Strip lining floring method characterized in that. delete delete delete delete delete delete delete delete delete

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