KR102243086B1 - Manufacture method of quick and slow setting grouting components to prevent leaching of liquid type which can automatically control to gel time and construction methods - Google Patents

Abstract

The present invention is to prepare a solution-type grouting composition capable of providing rapid setting and completion of gelation time control and dissolution prevention using silicate and polymeric monomer, initiator, crosslinking agent, and crosslinking accelerating catalyst, controlling gelation time and preventing dissolution of grouting. In step (A) of producing the silica sol of the grouting material required, the inflow amount of the polymeric monomer containing water-soluble silicate, acid, and initiator is controlled by the fluid automatic inflow control device, and the strength is increased and In step (B), which is added for acceleration, delay of gelation, and crosslinking of polymeric monomers, a solution-type grouting injection material for rapid setting gelling in 4-15 seconds or gelling in 45-80 seconds can be provided, in which case The incoming material is mixed with water, and through the mixing step of uniformly mixing the drug A and the drug B formed in each step, the gelation step and the solidification step that the gel time can be automatically controlled through the injection step, the grouting injection material for preventing leaching It has a feature that can provide a grouting injection material that can be uniformly and efficiently formed on the order wall with the purpose of ordering without mobilizing a lot of manpower during grouting, regardless of the shape of the soft ground. It is characterized by having.

Description

{Manufacture method of quick and slow setting grouting components to prevent leaching of liquid type which can automatically control to gel time and construction methods}

The present invention is a solution-type grouting composition for preventing leaching that can automatically control the gel time of grouting using a fluid inflow control device capable of controlling the amount of silica sol produced using silicate and the amount of gelling agent and additives inflow, and an automatic inflow opening/closing device. It relates to a manufacturing method and a construction method using the same,

In more detail, in step (A) of preparing a silica sol of a grouting material requiring control of the gelation time and prevention of leaching of grouting, the inflow amount of a polymeric monomer containing a water-soluble silicate, an acid, and an initiator is determined as a fluid. In step (B), which is controlled by an automatic inflow control device and added to increase strength and promote, delay, and crosslink polymeric monomers, rapid settling that gels in 4 to 15 seconds or complete dissolution that gels in 45 to 80 seconds A solution-type grouting injection material for prevention can be provided, and at this time, the incoming material is mixed with water, a mixing step of uniformly mixing the drugs of (A) and (B) formed in each step, and a gel through the injection step. It has the feature of providing a grouting injection material for preventing leaching through a gelation step and a solidification step that can be automatically controlled by time, which is not restricted to the shape of the soft ground, and the purpose of ordering without mobilizing a lot of manpower during grouting construction. The present invention relates to a method for preparing a grouting completion and rapid setting composition for preventing leaching, which can automatically control a gel time, characterized in that it can provide a grouting injection material that can be uniformly and efficiently formed on an excitation order wall, and a construction method using the same.

Grouting is to inject grout such as various cements, mortars, and drugs into the foundation ground or around the structure and inside the structure itself for the purpose of solidifying the ground, increasing the support of the ground, reducing water permeability, and integrating the ground and structure. For the purpose of improving the deformability and strength of the foundation bedrock, curtain grouting, which is installed for the purpose of creating water-stop walls by putting an injection agent into voids in the soil or cracks in rock mass, and the integration of structures such as concrete dams with the foundation rock mass. Consolidation grouting and so on.

When the foundation ground is soft, a suspension type grouting composition such as various cements, mortars, or reaction agents is injected around the structure, the structure itself, or the interior thereof. There are curtain grouting for purpose installation, integration of structures such as concrete dams with the foundation rock, and consolidation grouting for the purpose of improving the deformability and strength of the foundation rock.

During the tunnel excavation process, it may be very difficult to carry out the process of tunnel excavation due to groundwater outflow and soil outflow, and excessive groundwater outflow in the membrane and large cavitation may occur in the membrane due to the decrease in ground independence and increase in external stress. have. To this end, a solution-type grouting composition such as a transparent reaction agent in which particulate matter does not exist in the grouting composition is injected and used for ordering.

In addition, as exchanges between coastal and countries have been revitalized in recent years, the number of undersea tunnel construction cases around the world is steadily increasing. In Korea, interest in submarine tunnels is increasing with the recently opened Gahae Tunnel (3.7km) and the Boryeong-Taean Submarine Tunnel (6.7km) under construction. Most of the subsea tunnels constructed so far are underground excavation tunnels, and the method of directly excavating the subsea ground is mainly used. In the case of such an underground excavation type tunnel construction, since excessive groundwater inflow problems may occur during construction, the ordering measures during construction are considered important. The order grouting method is the most widely used method as the order method, and is one of the most important processes in the underwater tunnel construction process. However, there are still few cases of construction of submarine tunnels in Korea, so there are not many cases of order grouting design for submarine tunnels.

When grouting is constructed, it is divided into a solution type and a suspension type according to the transparency of the chemical injection method used in the chemical injection method, and the short type that gels and solidifies within 6 to 10 seconds depending on the gelation and solidification time, and the short type that solidifies within 60 seconds according to the gelation and solidification time. It is divided into a mild type that gels and solidifies within 120 seconds. In the case of a short injection chemical solution, it is used for the purpose of reinforcing the ground and injecting a complete chemical solution while requiring the order within a very short time. It is used for reinforcing the ground by exerting penetration and diffusion power.

In the case of solution-type and suspension-type grouting chemicals that have been used so far, silica sols are manufactured by manual or semi-automatic methods of _{silicate-based (water glass; Na 2} SiO _{3 ), and then they are used as grouting chemicals.} However, although there are many environments in which a uniform grouting chemical solution must be injected while the gel time is arbitrarily adjusted according to the shape of the ground even in a certain place, since the silica sol provided by the conventional manual or semi-automatic method is used, the gel time and Not only is it very difficult to control the solidification time, but also has the disadvantage that it is not possible to provide a high-strength grouting material because the composition of the chemical liquid is not uniform. In particular, if solution-type and suspension-type grouting chemicals need to be injected alternately depending on the construction environment, each independent device and system must be prepared to inject the chemicals, so it is not only economical to purchase a grouting chemicals supply device and system. In addition, since the injection pipe must be replaced during construction, it has the disadvantage that time is large and a lot of manpower must be mobilized.In particular, since the injection amount of the chemical solution is not automatically controlled, the probability of providing a non-uniform grouting material is very high, and the order is reduced. It has the disadvantage of not being able to provide a grouting material for it.

As such, in the case of solution-type or suspension-type grouting chemicals, most of the silicates of sodium silicate containing a large amount of sodium are used, but the sodium (Na) remaining in the final solidified body reacts with moisture contained in the basement and out of the solidified body. As the solidified body volume decreases, it cannot provide a waterproof role, and it causes damage to the high-strength solidified body in the future. In particular, in the case of a solidified solution type, it is made by silica sol*?*gel method. There is a big problem that the silicon particles with which the solid body is bonded in a network structure shrinks, causing leaching and not being able to function as an order.

Therefore, a method for preventing order in the grouting method using a solution-type grouting agent will be described as follows.

Korean Patent Laid-Open Patent Registration No. 10-1582246 proposes a high strength grouting composition for preventing leaching and a construction method using the same, and such a conventional invention uses a cation exchange resin to remove or minimize the sodium (Na) component. It is a method of manufacturing a high-strength grouting composition for preventing leaching, which can automatically control the gel time of grouting using a fluid inflow control device capable of controlling the inflow amount of the gelling agent and additives, and an automatic inflow opening and closing device. In the solution-type grouting construction method using silicate, it includes an initiator and a crosslinking agent containing a polymeric monomer to prevent leaching, and is to prevent leaching into the solution-type quick-setting and complete grouting body by the polymer of the hydrogel, It can be seen that the technical configuration of the present invention to be described later is completely different from the conventional invention.

In Korean Patent Laid-Open Patent Registration No. 10-1619218, a high-functional injection material in which an inorganic alumina powder, a vegetable foaming agent, and an acrylic polymer are mixed, and a grout material containing the high-functional injection material, and the grout material are mixed and produced for injecting it into the ground. By proposing an injection device, a grout material including the high-functional injection material, and a grout method using the injection device, the injection performance of the grout material is improved even when the ground voids are large, and the bending strength and the ground adhesion of the structure after construction are increased. It has been suggested that the leaching phenomenon can be suppressed, and such a conventional invention is an injection material in which an inorganic alumina powder, a vegetable foaming agent, and an acrylic polymer are mixed, whereas in the present invention to be described later, the solution-type grouting body is prevented from leaching. In order to contain an initiator and a crosslinking agent containing a polymeric monomer, and to prevent leaching into the solution-type quick-setting and complete grouting body by the polymer of the hydrogel, the technical configuration and technical idea of the present invention described above and below This is completely different.

In Korean Patent Laid-Open Publication No. 10-2011-0096438, products outside the standard of fumed silica and white carbon and/or waste slurry products are used, and the solid content is 12-20% by weight, providing stability for more than 6 months without gelation. A silica slurry composition that can be used and a grouting method using the same are proposed, and such a conventional invention is a slurry composition using a product outside the standard of fumed silica and white carbon and/or a waste slurry product, which will be described later. The present invention uses a composition of water-soluble silicate or colloidal silica, and contains a polymer monomer, an initiator, and a crosslinking agent to prevent dissolution of the final shape, while providing a polymer of a hydrogel by a chemical reaction to prevent dissolution. Therefore, it can be seen that the technical configuration and technical idea of the present invention to be described later are completely different from the conventional invention.

In Korean Patent Application Publication No. 10-0942523, a cement-based powder mixture composed of calcium sulfo aluminate powder, anhydrous gypsum and alumina mineral powder, a fluidizing agent, and an inorganic expanding material are mixed to form a grout mixture, and the purpose of using such a mixture is A grout mixture using a fast-diameter and expansive mixture that allows deep grouting to be achieved through a rapid injection method or a complete injection method for the ground, and a deep grout method using the same, are proposed. Such a conventional invention includes calcium sulfoaluminate powder and As a grout mixture formed by mixing a cement-based powder mixture composed of anhydrite and alumina mineral powder, a fluidizing agent, and an inorganic expanding material is used, it is not only a suspension type grout agent, but also sodium silicate or special The technical composition is completely different as it is completely different from the use of fusible materials such as silicic acid and silica sol.

As described above, in the case of a solution-type grout agent for the purpose of ordering, there is a problem that the shape body contracts as time elapses after being placed underground, and at the same time, leaching occurs, so that an excellent ordering effect cannot be provided.

Therefore, in order to prevent excessive groundwater outflow and large cavities in the curtain due to groundwater outflow and soil outflow during the tunnel excavation process due to the decrease in ground independence and increase in external stress, particulate matter in the grouting composition. After pouring a solution-type grouting composition such as a transparent reactive agent that does not exist in the basement, leaching must not occur.

In the present invention, as disclosed in the above background, colloidal silica or silicate-type solution grouting agents without particles for order purposes developed so far are solidified, and as time elapses, leaching occurs due to shrinkage of the grouting body. It was devised to solve the problem that it cannot provide the effect of the order.

Accordingly, a composition containing a polymeric monomer, an initiator, and a crosslinking agent was included in the colloidal silica or silicate type solution grouting agent to overcome the problem of leaching using a conventional colloidal silica or silicate type solution grouting agent. , Colloidal silica or silicate provides a gel time of rapid gelation in 4-15 seconds or completion of gelation in 45-80 seconds by a pharmaceutical composition in the form of a colloidal silica or silicate, and by polymerization by a composition containing a polymer monomer, an initiator and a crosslinking agent. The purpose of this is to provide a method of preparing a solution-type grouting and rapid setting composition for preventing leaching, which can automatically control the gel time by providing the network structure function of a three-dimensional polymer network, and a construction method using the same.

In addition, the present invention has an object to provide a grouting injection material that can be uniformly and efficiently formed on an order wall having a purpose of ordering without being mobilized a lot of manpower during grouting, regardless of the shape of the soft ground.

The present invention is a solution-type grouting composition for preventing leaching that can automatically control the gel time of grouting using a fluid inflow control device capable of controlling the amount of silica sol produced using silicate and the amount of gelling agent and additives inflow, and an automatic inflow opening/closing device. In the step (A) of preparing a silica sol of a grouting material requiring control of gelation time and prevention of leaching of grouting, it relates to a method of manufacturing and a construction method using the same. In step (B), the inflow amount of monomer is controlled by the fluid automatic inflow control device and added to increase the strength, accelerate, delay, and crosslink the polymeric monomers. It is possible to provide a solution-type grouting injection material that gels in ~80 seconds to prevent complete dissolution, and at this time, the incoming material is mixed with water, and the agents of (A) and (B) formed in each step are uniformly mixed. Through the step and injection step, it has the feature of providing a grouting injection material for preventing leaching through a gelation step and a solidification step that can automatically control the gel time.This is regardless of the shape of the soft ground and requires a lot of manpower during grouting. It is characterized by a method for producing a solution-type grouting composition for preventing leaching that can automatically control the gel time, characterized in that it can provide a grouting injection material that can be uniformly and efficiently formed on the ordering wall without being mobilized. .

In addition, the present invention is a grouting construction method using a grouting and dissolution prevention grouting completion and rapid setting composition capable of automatically controlling the gel time, including the step of gelling by injecting a gelling and dissolution prevention grouting composition capable of automatically adjusting the gel time to the soft ground. It is characterized in that it provides.

In the present invention, as disclosed in the background art, so far, grouting bodies using colloidal silica or silicate-type solution grouting agents are dislodged due to shrinkage of the grouting body as time elapses, thereby providing the effect of order. It can completely solve the problem of not being able to do it.

That is, the present invention provides a three-dimensional network structure function of a three-dimensional polymer network by adding a polymer monomer, an initiator, and a crosslinking agent to a colloidal silica or silicate solution type grouting agent, and polymerizing the polymer monomer. It is a very innovative invention that has a great advantage in providing a high-order effect without being restricted to the shape of the soft ground by providing a grouting composition that can automatically control the leaching as well as prevent leaching, and not mobilizing a lot of manpower during grouting construction. to be.

1 is a schematic diagram of a method for preparing a solution-type quick-setting and complete grouting composition for preventing leaching, which can automatically adjust the gel time according to the present invention.

Hereinafter, the technical idea of the present invention will be described in detail with reference to the drawings.

The present invention can automatically control the gel time, characterized by preparing a solution-type grouting composition capable of controlling the gelation time of rapid setting and completion, including the use of silicate and a polymeric monomer, an initiator, a crosslinking agent, and a crosslinking accelerating catalyst, and preventing leaching. In the step (A) of preparing a silica sol of a grouting material requiring control of gelation time and prevention of leaching and removal of grouting, a water-soluble silicate, an acid, and an initiator are In step (B), in step (B), the inflow amount of the included polymer monomer is controlled by the fluid automatic inflow control device and added to increase the strength, accelerate, delay, and crosslink the polymer monomer, gelation takes place in 4 to 15 seconds. It can provide a solution-type grouting injection material that gels in 45 to 80 seconds, and the incoming material is mixed with water, and the mixing step of uniformly mixing the agent A and the agent B formed in each step. Wow, it has the feature of providing a grouting injection material for preventing leaching through a gelation step and a solidification step that can automatically control the gel time through the injection step, which is not restricted to the shape of the soft ground, and a large number of manpower is mobilized during grouting construction. It is characterized in that it is possible to provide a grouting injection material that can be uniformly and efficiently formed on the order wall having the purpose of ordering without the problem.

The present invention having the above characteristics will be described in more detail.

In the manufacturing method of solution-type grouting that can prevent leaching while controlling the gel time of completion and rapid setting, the solution-type completion manufacturing method for preventing leaching is the automatic inflow control device (50-5) of a silica sol solution in step (A). In a state in which the water-soluble silicate 10 is not operated, the inflow amount of the water-soluble silicate 10 is controlled by the automatic water-soluble silicate inflow control device 50-1, and the dissolved polymer monomer and initiator 20 are the dissolved polymer monomer and the initiator automatic inflow control device. In the mixing step (60) of the water-soluble silicate, the dissolved polymeric monomer, and the initiator by adjusting the inflow amount by (50-2), the water-soluble silicate and the aqueous polymeric monomer solution (A) are mixed to automatically inject and open the drug A (70-1) The amount of the catalyst 30 including the crosslinking agent dissolved in step (B) is controlled by the automatic catalyst inflow control device 50-3 including the dissolved crosslinking agent, and the dissolved bicarbonate is automatically dissolved bicarbonate. The inflow amount is controlled by the inflow control device (50-4) and the catalyst including the dissolved crosslinking agent and the dissolved bicarbonate are mixed in the mixing step 80 of the crosslinking agent catalyst and the aqueous bicarbonate solution (B). The injection is controlled by 2), and through the mixing step 110 of the agent A and the agent B by the automatic injection opening and closing device for drug A (70-1) and the automatic injection opening and closing device for drug B (70-2), 45 to 80 Of course, there is a characteristic that a solution-type complete drug for preventing dissolution that can be gelled in seconds can be prepared,

In the solution-type rapid setting method for preventing leaching, in step (A), the amount of water-soluble silicate (10) is controlled by the automatic water-soluble silicate inflow control device (50-1), and the dissolved polymeric monomer and initiator (20) are dissolved. A water-soluble silicate and a polymeric monomer aqueous solution (A) are mixed in the mixing step 60 of the water-soluble silicate and the dissolved polymeric monomer and initiator by controlling the amount of inflow by the automatic inflow control device 50-2, and rapid gelling For this purpose, the automatic inflow control device 50-5 of the silica sol solution is driven so that the acid (Acid) is dissolved in the water-soluble silicate by the high-speed rotation step 90 of the stirrer by the organic and inorganic acid supply step (100). By mixing with the aqueous solution made by the initiator mixing step (60), colloidal silica in acidic conditions is made, and the supply of the drug A is controlled by the automatic injection and opening and closing device of the drug A (70-1). , When the automatic inflow control device 50-4 of the dissolved bicarbonate in step (B) is not operated, the catalyst 30 including the dissolved crosslinking agent is the automatic inflow control device of the catalyst 50-3 including the dissolved crosslinking agent. The inflow amount is controlled by the dissolved alkali agent 120, and the inflow amount is adjusted by the dissolved alkali agent automatic inflow control device 50-6, and the catalyst including the dissolved cross-linking agent and the dissolved alkali agent are mixed in an aqueous solution by step 130. It is configured to be made, and the injection of the drug B is controlled by the automatic injection and opening and closing device of the drug B (70-2), and the automatic injection and opening and closing device of the drug A (70-1) and the automatic injection and closing device of the drug B (70-2) There is a characteristic that a solution-type rapid setting agent for preventing leaching that can be gelled in 4 to 15 seconds through the mixing step 110 of the drug A and the drug B can be prepared.

Here, the water-soluble silicate (Silicate, 10) is one of 1 to 4 kinds of liquid sodium metasilicate, sodium orthosilicate, sodium disilicate, potassium silicate, lithium silicate, sodium aluminum silicate specified in the Korean Standards (KS). or more is selected, it is desirable bar, silicate to keep concentration of 15% by weight naejineun 8.0 to SiO ₂ decreases in viscosity when in a concentration of up to 8.0% by weight of SiO ₂ workability is excellent in grouting construction, and It may have the advantage of excellent price competitiveness for grouting construction due to its inexpensive price, but the strength of the gelled body by silicate is insufficient and the probability of forming a solution-type grouting body of completion and rapid setting is low. It is preferred to use silicate.

And in the dissolved polymeric monomer and initiator (20), in the case of a polymeric monomer, at least one polymeric monomer is selected from acrylamide or acrylic acid, and silicate is based on 100 parts by weight. It is preferably contained in an amount of 10 to 60 parts by weight, and in the case of an initiator, at least one initiator among ammonium persulfate, sodium persulfate, and potassium persulfate is based on 100 parts by weight of a polymer monomer. When doing so, it is preferably contained in an amount of 025 to 1.0% by weight.

In addition, the organic and inorganic acids (Acid) are sulfuric acid (H ₂ SO ₄ ), hydrochloric acid (HCl), nitric acid (HNO ₃ ), phosphoric acid (H ₃ PO ₄ ), acetic acid, lactic acid, tartaric acid. (Tartaric acid), Malic acid, Citric acid, Succini acid, Sulfamic acid, Formic acid, Oxalic acid, Oxalacetic acid, Fumaric acid (Fumaric acid), malic acid, butyric acid, palmitic acid, tartaric acid, ascorbic acid, uric acid, sulfinic acid , Isocitric acid, lauric acid, oleic acid, linoleic acid, myristic acid, at least one acid is selected. When the inorganic acid is supplied to the aqueous solution prepared in the step of mixing a polymer monomer in which a water-soluble silicate is dissolved and an initiator, it is preferable that the pH is supplied at a concentration of 4.0 or less.The organic and inorganic acid is a polymer monomer in which a water-soluble silicate is dissolved. And in the process of mixing with the aqueous solution prepared in the initiator mixing step, if the pH becomes 4.0 or higher, the oil, as the above-mentioned oil, is gelled on the ground within a very short time before pouring the solution-type grouting composition underground, and the grouting of the present application cannot be applied. When the inorganic acid is supplied to the aqueous solution prepared in the step of mixing the polymeric monomer and initiator in which the water-soluble silicate is dissolved, it is preferable that the pH is supplied at a concentration of 4.0 or less.

On the other hand, in the catalyst 30 including the dissolved crosslinking agent, in the case of the crosslinking agent, methylenebisacrylamide (N,N`-Methylenebisacrylamide) is selected, and 1.5 to 8.5 when the polymer is based on 100 parts by weight. It is preferably included in parts by weight, and in the case of a catalyst, tetramethylethylenediamine is included as a catalyst for crosslinking of the polymeric monomer, and it is preferably included in an amount of 0.01 to 0.05 parts by weight based on 100 parts by weight of acrylamide.

On the other hand, the dissolved alkali agent is 1 to 4 kinds of liquid sodium metasilicate, sodium orthosilicate, sodium disilicate, potassium silicate, lithium silicate, sodium aluminum silicate, sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, potassium carbonate, Lithium carbonate and aqueous ammonia containing at least one alkali agent in a concentration of 10 to 45% by weight may be used as the alkali agent.

Accordingly, in the present invention, a fluid inflow control device capable of controlling the inflow amount of grouting agents including silicate or silica sol, a polymer monomer, an initiator and a crosslinking agent, and an automatic inflow opening/closing device to automatically control the gel time of a solution-type grouting composition for preventing dissolution. It is possible to provide a manufacturing method and a construction method using the same.

Hereinafter, an embodiment to which the technical idea of the present invention is applied will be described, but it is natural that the technical idea of the present invention is not limited by the embodiment.

(Example 1)

As shown in Table 1 below, a solution-type completion method including silicate, a polymeric monomer, an initiator, and a crosslinking agent was performed.

division A liquid B liquid Standard combination volume Standard combination volume A-1 A-2 Sodium silicate
Issue 3 water acryl
Amide Ammonium persulfate water water MBA TMED Bicarbonate
soda Solution type 80 ml 20ml 10 g 0.15 g 90ml 200ml 192 ml 0.51 g 0.029
g 12 g 200ml

Prepare three 500 ml polyethylene containers, label A-1 in one container, A-2 in the other, and B in the other container, measure the composition in Table 1, and then dissolve the composition of A-2 first. Was supplied to A-1 to prepare a solution (solution A) in which a silicate, a polymeric monomer, and an initiator were mixed, and then the gel time was checked after mixing the agent A and the agent B, and the gelled body was left for 48 hours, and then the container The amount of leached water was measured by moving the leached water to the outside, and the amount of leached water was expressed as a percentage of the total weight.

(Example 2)

It was carried out in the same manner as in Example 1, except that a drug containing a silicate, a polymeric monomer, an initiator, and a crosslinking agent was prepared as shown in Table 2 below.

division A liquid B liquid Standard combination volume Standard combination volume A-1 A-2 Liquid potassium silicate water acryl
Amide Ammonium persulfate water water MBA TMED Bicarbonate
soda Solution type 70 ml 30ml 12 g 0.16 g 88ml 200ml 195 ml 0.49 g 0.024
g 12 g 200ml

(Example 3)

As shown in Table 3 below, a solution-type rapid setting method including silicate, a polymeric monomer, an initiator, and a crosslinking agent was performed.

division A liquid B liquid Standard combination volume Standard combination volume A-1 A-2 Silicic acid
soda
Issue 3 water water Acrylamide Ammonium persulfate 15%
H ₂ SO ₄
solution water MBA TMED Silicic acid
soda
Issue 3 Solution type 40 ml 60 ml 70ml 10 g 0.15 g 30ml 200ml 170 ml 0.51
g 0.021
g 4.2g/30ml 200ℓ

(Example 4)

It was carried out in the same manner as in Example 3, except that a drug containing a silicate, a polymeric monomer, an initiator, and a crosslinking agent was prepared as shown in Table 4 below.

division A liquid B liquid Standard combination volume Standard combination volume A-1 A-2 Silicic acid
potassium water water Acrylic acid Sodium
Persulfate 15%
H ₂ SO ₄
solution water MBA TMED Sodium hydroxide Solution type 50 ml 50 ml 70ml 15 g 0.18 g 15ml 200ml 170 ml 0.54
g 0.025
g 4.5g/30ml 200ℓ

(Comparative Examples 1-4)

It was carried out in the same manner as in Examples 1 to 4, except that a polymeric monomer, an initiator, a crosslinking agent, and a catalyst for accelerating crosslinking were not added for polymerization.

Table 5 shows the results of Comparative Examples 1-4 and Examples 1-4.

division Gel time (seconds) Melting rate (%) Example 1 52 0 Example 2 58 0 Example 3 8 0 Example 4 8 0 Comparative Example 1 53 6.4 Comparative Example 2 56 9.6 Comparative Example 3 9 8.2 Comparative Example 4 8 10.7

As shown in Table 5, in Comparative Examples 1 to 4 and Examples 1 to 4, it was confirmed that gelation occurred at a similar level of about 1 minute in the solution-type grouting completion method, and about 8 to 9 seconds in the solution-type grouting rapid setting method. In terms of dissolution rate, when the solution-type grouting method was performed in the same manner as the conventional method, a dissolution rate of about 6-10% occurred, whereas a polymeric monomer, initiator, and crosslinking agent were added to the conventional solution-type grouting composition It was confirmed that when a network having a three-dimensional network structure was formed by polymerization, the leaching rate did not occur at all.

Therefore, when performing the grouting construction method including the step of gelling by injecting the leaching prevention grouting and rapid setting composition into the soft ground, which can automatically adjust the gel time prepared according to the above embodiment, no leaching rate occurs. As it is not, it is possible to stably improve the soft ground.

At this time, when the pores in the soft ground are large, cement mortar is injected into the pores by using a grouting injection device, and the outer surface of the grouting prevention grouting and rapid setting composition capable of automatically controlling the gel time of the present invention manufactured by the above method is prepared. Cement mortar fills the large voids by simultaneous injection, and the solution grouting composition gels on the outer surface of the cement mortar to form a coating layer, and at the same time, the solution grouting composition fills even the micropores existing on the main surface of the cement mortar to use the material efficiently. While doing so, it is possible to prevent leachate from occurring.

Therefore, according to the technical configuration and technical idea of the present invention, it is possible to sufficiently solve the conventional order problem by providing a method for preparing a solution-type grouting composition for preventing leaching and a construction method using the same that can automatically adjust the gel time.

10: water-soluble silicate 20: dissolved polymeric monomer and initiator
30: catalyst containing dissolved crosslinking agent
40: dissolved bicarbonate 50-1: water-soluble silicate automatic inflow control device
50-2: Automatic inflow control of dissolved polymeric monomers and initiators
50-3: Automatic inflow control device of catalyst including dissolved crosslinking agent
50-4: Dissolved bicarbonate automatic inflow control device
50-5: Silica sol solution automatic inflow control device
50-6: Dissolved alkali agent automatic inflow control device
60: Mixing step of water-soluble silicate and dissolved polymer monomer and initiator
70-1: A drug automatic injection and opening and closing device 70-2: B drug automatic injection and opening and closing device
80: Mixing step of catalyst including dissolved crosslinking agent and dissolved bicarbonate
90: high-speed rotation step 100: organic, inorganic acid supply step
110: A + B drug mixing step 120: dissolved alkali agent
130: Mixing step of a catalyst including a dissolved crosslinking agent and a dissolved alkali agent

Claims (9)

A solution-type grouting composition capable of controlling the gelation time of rapid setting and completion and preventing dissolution by selectively using silicate and polymeric monomer, initiator, crosslinking agent, crosslinking accelerating catalyst and bicarbonate, organic, inorganic acid, and alkali agent is prepared. ,
In the case of a solution-type grouting composition that can control the gelation time of completion and prevent leaching, as step (A), when the automatic inflow control device 50-5 of the silica sol solution is not operated, the water-soluble silicate 10 is The inflow amount is controlled by the water-soluble silicate automatic inflow control device (50-1),
The dissolved polymeric monomer and initiator 20 are inflow amount controlled by the dissolved polymeric monomer and initiator automatic inflow control device 50-2, and the water-soluble silicate and the water-soluble silicate in the mixing step 60 of the dissolved polymeric monomer and initiator The polymeric monomer aqueous solution (A) is mixed and controlled by the automatic injection and opening/closing device for drug A (70-1),
As step (B), the inflow amount of the catalyst 30 including the dissolved crosslinking agent is controlled by the automatic catalyst inflow control device 50-3 including the dissolved crosslinking agent, and the dissolved bicarbonate is the dissolved bicarbonate automatic inflow control device 50 In the step of mixing the catalyst containing the dissolved cross-linking agent and the dissolved bicarbonate by controlling the inflow amount by -4), the cross-linking agent catalyst and the aqueous bicarbonate solution (B) are mixed, and the injection is controlled by the automatic injection and switching device (70-2) of the drug B. , For preventing leaching that can be gelled in 45 to 80 seconds through the mixing step 110 of the A drug and the B drug by the automatic injection and opening and closing device of the A drug (70-1) and the automatic injection and opening and closing of the drug B (70-2) Preparing a solution-type complete drug;

In the case of a solution-type grouting composition that can control the gelation time of rapid setting and prevent leaching, the inflow amount of the water-soluble silicate 10 as step (A) is controlled by the water-soluble silicate automatic inflow control device 50-1,
The dissolved polymeric monomer and initiator 20 are inflow amount controlled by the dissolved polymeric monomer and initiator automatic inflow control device 50-2, and the water-soluble silicate and the water-soluble silicate in the mixing step 60 of the dissolved polymeric monomer and initiator A polymeric monomer aqueous solution (A) is mixed,
For rapid gelation, the automatic inflow control device 50-5 of a silica sol solution is driven so that the acid is dissolved in the water-soluble silicate by the high-speed rotation step 90 of the stirrer by the supplying step 100 of organic and inorganic acids. By mixing with the aqueous solution made by the monomer and initiator mixing step (60), colloidal silica in acidic conditions is made, and then the supply of the drug A is controlled by the automatic injection and opening and closing device of the drug A (70-1). Make it possible,
In the state that the automatic inflow control device 50-4 of the dissolved bicarbonate in step (B) is not operated, the catalyst 30 including the dissolved cross-linking agent is transferred to the automatic inflow control device 50-3 of the catalyst including the dissolved cross-linking agent. The inflow amount is controlled by
The dissolved alkali agent 120 is configured such that the inflow amount is adjusted by the dissolved alkali agent automatic inflow control device 50-6 to make an aqueous solution by the catalyst including the dissolved crosslinking agent and the dissolved alkali agent mixing step 130,
The injection of the drug B is controlled by the automatic injection and closing device of the drug B (70-2), and the drug A and the drug B are controlled by the automatic injection and opening and closing device of the drug A (70-1) and the automatic injection and opening and closing device of the drug B (70-2). A method of preparing a composition for completing and quick setting of a composition for preventing dissolution, which can automatically control a gel time, characterized in that a solution-type finished drug for preventing dissolution, which can be gelled in 4 to 15 seconds, is prepared through the mixing step 110 of the drug. delete delete The method of claim 1, wherein the silicate is one or more of 1 to 4 liquid sodium metasilicate, sodium orthosilicate, sodium disilicate, potassium silicate, lithium silicate, and sodium aluminum silicate specified in the Korean Standard Standard (KS). It is selected and consists of a concentration of 8.0 to 15% by weight of _{SiO 2,}
The polymeric monomer is one or more polymeric monomers selected from acrylamide or acrylic acid, and is included in an amount of 10 to 60 parts by weight based on 100 parts by weight of silicate,
The initiator is contained in 0.25 to 1.0% by weight when at least one initiator among ammonium persulfate, sodium persulfate, and potassium persulfate is based on 100 parts by weight of a polymeric monomer,
The organic and inorganic acids (Acid) are sulfuric acid (H ₂ SO ₄ ), hydrochloric acid (HCl), nitric acid (HNO ₃ ), phosphoric acid (H ₃ PO ₄ ), acetic acid, lactic acid, tartaric acid ( Tartaric acid), Maleic acid, Citric acid, Succini acid, Sulfamic acid, Formic acid, Oxalic acid, Oxalacetic acid, Fumaric acid Fumaric acid), malic acid, butyric acid, palmitic acid, tartaric acid, ascorbic acid, uric acid, sulfinic acid, At least one acid is selected from Isocitric acid, lauric acid, oleic acid, linoleic acid, and myristic acid, and organic or inorganic The acid of is composed so that the pH is supplied at a concentration of 4.0 or less when supplied to the aqueous solution prepared in the step of mixing the polymeric monomer and initiator in which the water-soluble silicate is dissolved,
The alkali agent is dissolved in water, and 1 to 4 kinds of liquid sodium metasilicate, sodium orthosilicate, sodium disilicate, potassium silicate, lithium silicate, sodium aluminum silicate, sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, potassium carbonate , Lithium carbonate, a method of producing a grouting completion and rapid setting composition for preventing dissolution, which can automatically control the gel time, characterized in that at least one alkali agent is contained in a concentration of 10 to 45% by weight of aqueous ammonia. delete delete delete delete Completion of leaching prevention grouting, which can automatically control the gel time prepared according to claim 1, and grouting using a rapid setting composition and completion of leaching prevention grouting capable of automatically controlling the gel time, including the step of gelling by injecting the composition into the soft ground. Construction method.

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