JPH11228941A - Penetrating waterproofing agent and method for preventing water leak - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a penetrating waterproofing agent which is low-cost, does not require much labor for application, does not adversely affect the external appearance of a building, and exhibits a good storage stability by compounding a surfactant, a gelable hydrophilic resin, a gelling agent, and water so that the resultant agent has a specified thixotropic index. SOLUTION: This agent comprises about 0.1-30 pts.wt. surfactant, about 0.1-20 pts.wt. gelable hydrophilic resin, about 0.1-30 pts.wt. gelling agent therefor, and 100 pts.wt. water and has a thixotropic index of 1.5 or higher. The gelable hydrophilic resin is pref. a poly(meth)acrylic acid deriv., sodium alginate, or sodium carboxymethylcellulose. The gelling agent is pref. a compd. which generates an at least divalent metal cation, such as a silicate or a water-soluble alkaline earth metal salt. The surfactant may be of any kind.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permeable waterproofing agent having a good water stopping performance and a method for preventing water leakage, and more particularly to a water leakage by filling cracks or holes that cause water leakage and filling the gaps. And a method for preventing water leakage by spraying the permeable waterproofing agent on a roof, floor or wall surface.

[0002]

2. Description of the Related Art To stop water leakage from a roof, a floor or a wall, a sealing agent is applied and filled into a leaking point such as a hole or a crack or a gap which causes the leaking. The entire roof must be replaced, the waterproof sheet must be completely replaced, the walls must be spray-painted, and the tiles must be completely replaced. In many cases, it is extremely difficult to identify the infiltration point of the leaked water, so that simple repair simply by applying and filling a sealant is often not solved. In the case of rain leakage, the compensation period is often as long as 5 to 10 years, during which time the contractor, the contractor whose compensation has expired, and sometimes the owner, have to bear a large amount of expenses. Have been. In this regard, Tokuhei 7-966
No. 72 discloses a rain leak preventive for spraying, and discloses a method of closing a crack which causes water leakage with a water-insoluble powdery material. However, there was a drawback that the water-insoluble powdery substances settled during storage, resulting in poor storage stability. In this regard, Japanese Patent Application Laid-Open No. 5-140537 discloses one solution to the problem of sedimentation using a silica sol dispersion. However, even in this method, in an environment below the freezing point, the dispersion of the silica sol may be broken by freezing, causing sedimentation, and the preservability cannot be said to be perfect.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to develop a waterproofing agent which is inexpensive, does not require construction work, does not impair the aesthetics of the building, and has good preservability.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention provides (1) a water-permeable permeable waterproofing agent having a thixotropic property and a thixotropic index value of 1.5 or more, (2) (a) a surfactant, and (b) a gelling hydrophilic resin. , (C) the permeable waterproofing agent according to the above (1), comprising a gelling agent of the component (b) and (d) water;
(3) 100 parts by weight of component (d), 0.1 to 30 parts by weight of component (a), 0.1 to 20 parts by weight of component (b),
(C) the permeable waterproofing agent according to the above (1) or (2), which is mixed at a ratio of 0.1 to 30 parts by weight of the component;
(4) The preceding item (1) wherein the gelling hydrophilic resin is at least one selected from poly (meth) acrylic acid derivatives, alginic acid derivatives, starch derivatives and cellulose derivatives.
The permeable waterproofing agent according to any one of (1) to (3), (5)
The gelling hydrophilic resin is sodium poly (meth) acrylate, poly (meth) acrylamide, alginic acid, sodium alginate, potassium alginate, propylene glycol alginate, starch, sodium starch glycolate, sodium starch phosphate, The permeable waterproofing agent according to the above item (4), which is at least one selected from methylcellulose, hydroxypropylcellulose and sodium carboxymethylcellulose, and (6) the gelling agent for the gelling hydrophilic resin in water,
The preceding item (1), which is a compound that generates a metal cation having a valence of more than
The permeable waterproofing agent according to any one of (1) to (4), (7)
Compounds that generate divalent or higher valent metal ions in water are silicates,
The above item (6), which is at least one selected from a water-soluble alkaline earth metal salt, alum, a water-soluble aluminum salt, a water-soluble iron salt, a water-soluble manganese salt, a water-soluble zinc salt and an alkaline earth metal oxide. (8) A method for preventing water leakage, which comprises spraying the permeable waterproofing agent according to any one of (1) to (7) above and then injecting the permeable waterproofing agent with water into the water leakage inlet. About.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The permeable waterproofing agent of the present invention has thixotropy. Thixotropy is a phenomenon in which the fluidity (viscosity) of a substance changes due to stress (stirring, shaking, etc.), and this phenomenon destroys the weak structure formed in the liquid and is reconstructed by standing still This is due to a change in the structure. Due to this property, by sufficiently stirring just before using the permeable waterproofing agent, the viscosity is reduced, the flow of the agent is improved, and it is easy to penetrate the water leak crack. After the application, the viscosity gradually increases due to the structural viscosity, and the agent easily stays in the crack without flowing out. In addition, it is difficult to cause liquid dripping at the time of wall construction or the like, and workability is improved. The thixotropic index value (or thixotropic factor) is an index indicating the structural viscosity often used in the coatings industry. Usually, in the measurement with a B-type viscometer, the viscosity measured at 6 rpm is the viscosity measured at 60 rpm. It is the divided value. The closer the thixotropic index value is to 1, the more the flow becomes Newtonian, and the larger the value is, the more viscous the structure becomes and the less dripping occurs. The permeable waterproofing agent of the present invention has a thixotropic index value of 1.5 or more, preferably 1.5 to 10. When the thixotropic index value is 1.5 or less, the agent permeated into the water leak crack may flow out without remaining. In addition, liquid dripping easily occurs at the time of wall construction, and workability is reduced.
The permeable waterproofing agent of the present invention exhibiting such a thixotropic index value is composed of a substance having a thixotropic property, a substance exhibiting waterproofness, and water, and can have a thixotropic index value of 1.5 or more. There is no particular limitation as long as there is no particular limitation. For example, a hydrophilic resin such as a superabsorbent polymer having thixotropic properties and waterproofness and water and the hydrophilic resin: water = 0.05: 99.95 to 10:90 (weight ratio) )).

In a preferred embodiment of the present invention,
(A) surfactant, (b) gelling hydrophilic resin, (c)
It contains the gelling agent (b) and water (d). The surfactant (component (a)) facilitates the introduction of the water leakage preventing component (hereinafter, simply referred to as a water leakage preventing component) in the permeable waterproofing agent of the present invention to a leak infiltration point. Surfactants may be of any type, anionic, cationic, nonionic, amphoteric, etc., specifically, fatty acid salts, phosphates, polyoxyethylene glycol, tetraalkyl ammonium salts, Examples thereof include an alkyl ether sulfate, an alpha olefin sulfonate, and a fatty acid alkanolamide, and these may be used alone or in combination of two or more. From the viewpoint of the environment, it is preferable to select one having good biodegradability. Specific examples include fatty acid sodium, fatty acid potassium, sodium alkyl ether sulfate, sodium alpha-olefin sulfonate, fatty acid alkanolamide, alkylamine oxide and the like. The amount of the surfactant is usually 0.1 to 30 parts by weight, preferably 0.3 to 10 parts by weight, based on 100 parts by weight of water (component (d)).

One part of the gelling hydrophilic resin (component (b)) reacts with the gelling agent (component (c)) of the hydrophilic resin to form a water-insoluble gel, and the unreacted remainder is the gel. It becomes a binder and has a function of preventing it from flowing out after entering a leak infiltration point, absorbs water in a short time, swells, and at the maximum, swells up to about several hundred times its own weight. Among them, non-crosslinked type is particularly preferable. Specific examples of the gelling hydrophilic resin that can be used include alkali metal poly (meth) acrylate, sodium (meth) acrylate-vinyl alcohol copolymer (methyl (meth) acrylate-vinyl acetate copolymer). Poly (meth) acrylic acid derivatives, such as saponified poly (meth) acrylonitrile polymer, hydroxyethyl methacrylate polymer, poly (meth) acrylamide, alginic acid,
Alginate derivatives such as sodium alginate, potassium alginate, propylene glycol alginate, starch derivatives such as starch, sodium starch glycolate, potassium starch glycolate, sodium starch phosphate, potassium starch phosphate, methylcellulose, hydroxypropylcellulose, carboxy Cellulose derivatives such as sodium methylcellulose and potassium carboxymethylcellulose are exemplified. Among these, poly (meth) acrylic acid derivatives, sodium alginate and sodium carboxymethylcellulose are more preferred, and sodium polyacrylate is particularly preferred. These gelling hydrophilic resins may be used alone or as a mixture. The amount of the gelling hydrophilic resin to be added is generally 0.1 to 20 parts by weight, preferably 0.2 to 10 parts by weight, based on 100 parts by weight of water (component (d)).

Further, another hydrophilic paste may be mixed with the gelling hydrophilic resin. The hydrophilic sizing agent may be any of a natural sizing agent, a synthetic polymer sizing agent, and the like, but is preferably a synthetic polymer sizing agent that does not easily rot. Specific examples include polyvinyl alcohol, polyvinyl acetate, gelatin, glue, and acrylic emulsion. When the hydrophilic paste is used, the amount of the hydrophilic paste is usually 1 to 10 parts by weight based on 100 parts by weight of water (component (d)). The hydrophilic paste has a function of preventing the water leakage inhibitor of the present invention from flowing out after entering the water leakage entry point.

The gelling agent (c) for the hydrophilic resin is not particularly limited as long as it chemically or physically binds to the gelling hydrophilic resin in water to gel the hydrophilic resin. However, compounds which usually generate a divalent or higher valent metal cation in water are preferred. Whether or not the gelling agent can be used can be easily determined by dissolving the gelling hydrophilic resin in water, adding the compound, and increasing the viscosity of the solution. Specific examples include polyvalent metal silicates that generate metal ions in water to the extent that they have gelling ability, water-soluble alkaline earth metal salts, alum, water-soluble aluminum salts, water-soluble iron salts, water-soluble manganese salts, Water-soluble zinc salts or alkaline earth metal oxides are exemplified. Examples of the polyvalent metal salt of silicic acid include aluminum salt of silicic acid, calcium salt of silicic acid and the like, and Ca-type silicate such as bentonite, montmorillonite or smectite is preferable. In the present invention, the Ca type such as bentonite, montmorillonite or smectite means those having a relatively large calcium content, and when the calcium content in these silicates is converted into CaO, the total weight of bentonite, montmorillonite or smectite etc. About 1 to 2% or more by weight based on the weight is preferable. Examples of the water-soluble alkaline earth metal salt include an alkaline earth metal salt of an organic acid having 1 to 3 carbon atoms or an alkaline earth metal salt of an inorganic acid, and specifically, calcium acetate, calcium chloride,
Examples include calcium hydroxide, calcium nitrate, magnesium acetate, magnesium chloride, magnesium nitrate, magnesium sulfate and the like. Examples of alum include aluminum potassium alum, iron alum, and the like. Examples of the water-soluble aluminum salt include aluminum acetate, aluminum chloride, aluminum sulfate, and aluminum nitrate. Iron salts of organic acids or iron salts of inorganic acids and the like, specifically, iron acetate, iron chloride,
Iron sulfate, iron nitrate, etc., as water-soluble manganese salts,
A manganese salt of an organic acid or a manganese salt of an inorganic acid having 1 to 3 carbon atoms is mentioned, and specific examples thereof include manganese acetate, manganese chloride, and manganese sulfate. Examples of the water-soluble zinc salt include zinc salts of organic acids having 1 to 3 carbon atoms or zinc salts of inorganic acids, and specific examples thereof include zinc acetate, zinc chloride, zinc nitrate, and zinc sulfate. Examples of the alkaline earth metal oxides include magnesium oxide, calcium oxide, and the like, and Ca-type bentonite, Ca-type montmorillonite, and Ca-type smectite, magnesium acetate, calcium hydroxide, calcium acetate, aluminum acetate, and aluminum sulfate are preferable. . Ca-type bentonite, Ca-type montmorillonite, Ca-type smectite, and the like have a swelling property and are therefore particularly preferable in practical use. The function of the gelling agent for the hydrophilic resin is to convert the gelling hydrophilic resin into a water-insoluble gel, but the resulting gel has no sedimentation property. Therefore, it is quickly guided to the leak entry point, and the leak entry point can be closed. In addition, since the gel becomes insoluble in water, the gel that has closed at the leaked portion does not dissolve again in water and does not flow away. The amount of the gelling agent for the hydrophilic resin varies depending on the gelling ability, the type of the gelling hydrophilic resin, and the like, but is usually 1 to 2,000 parts by weight based on 100 parts by weight of the gelling hydrophilic resin. , Preferably 10 to 15
00 parts by weight.

If necessary, a water-insoluble powdery material may be mixed in the permeable waterproofing agent of the present invention containing the components (a) to (d). The water-insoluble powdery substance may be either an organic substance powder or an inorganic substance powder, and preferably has a particle diameter of 0.1 μm to 1 mm and is widely and uniformly distributed. In addition, the specific gravity of the particles is preferably about 1.0 or slightly heavier than water,
Those that float in water and are uniformly dispersed are preferred. Specific examples include rosin powder, resin particles, clay, wood flour, vermiculite, perlite, mica powder, and the like, and those having the property of swelling by absorbing water are preferable. The water-insoluble powder can be used alone or in combination of two or more. When using two or more kinds in combination, a combination that broadens the particle size distribution is preferable. Since the color of the water-insoluble powdery material affects the appearance of the building when sprayed, in the case of a roof or a wall, it is better to select the same color or the colorless and transparent one. In the present invention, the water-insoluble powdery material is difficult to settle because it has a gel of a gelling hydrophilic resin,
Good storage stability. The compounding amount of the water-insoluble powder is usually 2 to 10 parts by weight based on 100 parts by weight of water (component (d)).

The permeable waterproofing agent of the present invention can be obtained by uniformly mixing the above components at a predetermined ratio. In this case, the order of mixing the components is arbitrary. As a method of using the permeable waterproofing agent of the present invention, it is sufficient to spray the material near the water leaking entrance where it can be found. If the location of the leak is unknown, it may be evenly spread over the roof, floor or wall where the water leaks, but it is not necessary to apply the roof, floor or wall entirely.

A preferred roof to which the permeable waterproofing agent of the present invention is applied is a reinforced concrete flat roof, which is usually a combination of concrete joint waterproofing and membrane waterproofing such as asphalt waterproofing, sheet waterproofing and coating waterproofing. It can be sprayed over the waterproof layer. The preferred floor to which the osmotic waterproofing agent of the present invention is applied is a bare concrete body, but mortar, paint, sheet, or the like may be placed thereon, and it may be sprayed from above. Preferred outer walls for applying the permeable waterproofing agent of the present invention are cement mortar, acrylic lysine sprayed, tiled, brick, concrete base and the like.

[0013]

Next, the present invention will be described in more detail by way of examples. In the examples, the thixotropic index value was measured based on JIS K5400 4.5.3 reference test.

Example 1 (1) Surfactant: 25 g of sodium oleate (reagent, Wako Pure Chemical Industries, Ltd.) (2) Gelling hydrophilic resin: 8 g of sodium polyacrylate (trade name: Panakayak CSG-K) (Nippon Kayaku Co., Ltd.) (3) Gelling agent for hydrophilic resin: Bentonite 40 g
(Trade name: Wenger, manufactured by Toyoshun Mining Co., Ltd.) (4) Water 1000 g These are sufficiently mixed to form a viscous liquid (the permeable waterproofing agent of the present invention, thixotropic index value (hereinafter abbreviated as TI); 2.5) was obtained.

Separately, concrete blocks (width 50 mm,
Two types of 100 pieces (length 100 mm, height 100 mm) (0.
1, 0.3, 0.5 mm), and after applying 20 g of the above permeable waterproofing agent to each gap with a spatula, 2
The sample was allowed to stand at room temperature for 4 hours to prepare a test body. Next, a glass tube having an inner diameter of 35 mm and a height of 300 mm was erected at the center of the gap between the specimens, and a portion where the tube and the specimen surface were in contact was sealed with a sealing agent. Furthermore, after the test specimen was allowed to stand at room temperature for 24 hours, 240 ml of water was poured into a glass tube (the amount of water is equivalent to 250 mm at the head), and 5, 10, 15, 20, 25, 30 from the time of starting pouring. The water level after minutes and 24 hours was measured. About 30 seconds after starting to pour the test specimen with a gap of 0.1 mm, the water level dropped and the water level became 24
5 mm and the same water level 24 hours later. 0.3
About 50 seconds after the start of pouring, the test piece with a gap of mm stopped decreasing in water level and showed a water level of 188 mm, which was the same after 24 hours. In the test specimen with a gap of 0.5 mm, the drop in water level stopped in about 1 minute and 15 seconds after the start of pouring, and the water level was 125
mm and the same water level 24 hours later. Water did not leak from any of the test specimens with any gap width except immediately after water injection.

Example 2 (1) Surfactant: 10 g of sodium stearate
(Reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (2) Gelling hydrophilic resin: 7 g of sodium polyacrylate (trade name: Panakayak F, manufactured by Nippon Kayaku Co., Ltd.) (3) Gelling agent for hydrophilic resin : Montmorillonite 30
g (trade name: Kunipia-F, manufactured by Kunimine Industries Co., Ltd.) (4) Water 1000 g These were sufficiently mixed to obtain a viscous liquid (the permeable waterproofing agent of the present invention, TI; 1.9). 1000 g of this liquid was evenly sprayed from the roof to the roof (approximately 25 m ² ) of a reinforced concrete five-story building with water leakage, and then 50 liters of water were sprinkled with a hose. Seven days later, there was rain, but the leakage had stopped completely.

Separately, a commercially available cement containing sand (trade name:
Aso Katei Cement, Aso Cement Co., Ltd.) 3.0
Kg was prepared, 800 g of water was added thereto, and the mixture was kneaded well. Then, the mixture was placed in a mold and solidified into a shape shown in FIG. After the concrete container was split in two (FIG. 2), it was rejoined and reinforced with wire, and water was poured into the container in the state shown in FIG. 3, but water leaked immediately from the joint. 20 g of the above permeable waterproofing agent was applied to the inside of the seam of the container with a brush, and after one hour, water was poured into the container until it became full, but no leakage occurred. After standing for 30 minutes, water was drained from the container, and the container was dried at 60 ° C. for 3 days. After the vessel had cooled to room temperature, it was poured again with water, but no water leaked out of the seams. Further, this was left standing for 3 days with water, but no water leaked from the joint.

Example 3 (1) Surfactant: 5 g of sodium stearate (reagent, manufactured by Wako Pure Chemical Industries, Ltd.): 5 g of sodium lauryl sulfate (trade name: Emal 10 powder, manufactured by Kao Corporation) (2) Gel Hydrophilic resin: sodium alginate 2
0 g (reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (3) Gelling agent for hydrophilic resin: smectite 50 g
(Trade name: Smecton, manufactured by Kunimine Industries Co., Ltd.) (4) Water 1000 g These were sufficiently mixed to obtain a viscous liquid (the permeable waterproofing agent of the present invention, TI; 3.1). 500 g of this liquid was evenly sprayed from the roof of the veranda onto the rooftop part (approximately 10 m ² ) of the second floor veranda of a reinforced concrete 5-story building with water leakage, and then 30 liters of water were sprinkled with a hose. Six days later, there was rain, but the leakage had stopped completely.

Separately, a commercially available cement containing sand (trade name:
Aso Katei Cement, Aso Cement Co., Ltd.) 3.0
Kg was prepared, 800 g of water was added thereto, and the mixture was kneaded well. Then, the mixture was placed in a mold and solidified into a shape shown in FIG. After the concrete container was split in two (FIG. 2), it was rejoined and reinforced with wire, and water was poured into the container in the state shown in FIG. 3, but water leaked immediately from the joint. 20 g of the above permeable waterproofing agent was applied to the inside of the seam of the container with a brush, and after one hour, water was poured into the container until it became full, but no leakage occurred. After standing for 30 minutes, water was drained from the container, and the container was dried at 60 ° C. for 3 days. After the vessel had cooled to room temperature, it was poured again with water, but no water leaked out of the seams. Further, this was left standing for 3 days with water, but no water leaked from the joint.

Example 4 (1) Surfactant: 20 g of sodium lauryl sulfate
(Product name: Emal 10 powder, manufactured by Kao Corporation) (2) Gelling hydrophilic resin: 10 g of sodium carboxymethyl cellulose (reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (3) Gelling agent for hydrophilic resin: acetic acid 5g calcium
(Reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (4) Water 1000 g These were sufficiently mixed to obtain a viscous liquid (the permeable waterproofing agent of the present invention, TI; 1.7). 1000 g of this liquid was uniformly applied to the third-floor outer wall portion (approximately 10 m ² ) of a reinforced concrete three-story building having water leakage from the tiled outer wall, and then water was sprinkled with a hose by 10 liters. Ten days later there was rain, but the leakage had stopped completely.

Separately, a commercially available cement containing sand (trade name:
Aso Katei Cement, Aso Cement Co., Ltd.) 3.0
Kg was prepared, 800 g of water was added thereto, and the mixture was kneaded well. Then, the mixture was placed in a mold and solidified into a shape shown in FIG. After the concrete container was split in two (FIG. 2), it was rejoined and reinforced with wire, and water was poured into the container in the state shown in FIG. 3, but water leaked immediately from the joint. 20 g of the above permeable waterproofing agent was applied to the inside of the seam of the container with a brush, and after one hour, water was poured into the container until it became full, but no leakage occurred. After standing for 30 minutes, water was drained from the container, and the container was dried at 60 ° C. for 3 days. After the vessel had cooled to room temperature, it was poured again with water, but no water leaked out of the seams. It was left for three days with water, but no water leaked from the joint.

Example 5 (1) Surfactant: 20 g of sodium oleate (reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (2) Gelling hydrophilic resin: 10 g of sodium carboxymethyl cellulose (reagent, stock of Wako Pure Chemical Industries, Ltd.) (3) Gelling agent for hydrophilic resin: bentonite 50g
(Manufactured by Kunimine Industries Co., Ltd.) (4) Water 1000 g These were sufficiently mixed to obtain a viscous liquid (the permeable waterproofing agent of the present invention, TI; 3.5). 1000 g of the liquid was evenly distributed on the rooftop part (approximately 10 m ² ) of the second-floor parking lot of a reinforced concrete two-story building with water leakage from the rooftop, and then 20 liters of water were sprinkled with a hose. Two days later there was rain, but the leakage had stopped completely.

Separately, a commercially available sand-containing cement (trade name:
Aso Katei Cement, Aso Cement Co., Ltd.) 3.0
Kg was prepared, 800 g of water was added thereto, and the mixture was kneaded well. Then, the mixture was placed in a mold and solidified into a shape shown in FIG. After the concrete container was split in two (FIG. 2), it was rejoined and reinforced with wire, and water was poured into the container in the state shown in FIG. 3, but water leaked immediately from the joint. 20 g of the above permeable waterproofing agent was applied to the inside of the seam of the container with a brush, and after one hour, water was poured into the container until it became full, but no leakage occurred. After standing for 30 minutes, water was drained from the container, and the container was dried at 60 ° C. for 3 days. After the vessel had cooled to room temperature, it was poured again with water, but no water leaked out of the seams. Further, this was left standing for 3 days with water, but no water leaked from the joint.

[0024]

The permeable waterproofing agent of the present invention is applied to a mortar or a concrete product, and the water which penetrates through the cracks generated in the mortar or concrete product is used, so that the cracked portion can be quickly formed by the permeable waterproofing agent. Because it is filled, it is possible to prevent intrusion of the infiltration water. Therefore, it is extremely useful for preventing deterioration of mortar and concrete products.

[Brief description of the drawings]

Fig. 1 Concrete container

FIG. 2 is a concrete container of FIG. 1 divided into two parts.

FIG. 3 is a view obtained by restoring the two-part container obtained in FIG. 2;

[Explanation of symbols]

 1; concrete container 2; seam 3; wire

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04G 23/02 E04G 23/02 B

Claims (8)

[Claims] An osmotic waterproofing agent containing water having a thixotropic property and a thixotropic index value of 1.5 or more. 2. The permeable waterproof material according to claim 1, comprising (a) a surfactant, (b) a gelling hydrophilic resin, (c) a gelling agent of the component (b), and (d) water. Agent. (3) 100 parts by weight of the component (d) and (a)
3. The osmotic composition according to claim 1, wherein the components are mixed at a ratio of 0.1 to 30 parts by weight of the component, 0.1 to 20 parts by weight of the component (b), and 0.1 to 30 parts by weight of the component (c). Waterproofing agent. 4. The method according to claim 1, wherein the gelling hydrophilic resin is at least one selected from poly (meth) acrylic acid derivatives, alginic acid derivatives, starch derivatives and cellulose derivatives. Permeable waterproofing agent. 5. The gelling hydrophilic resin is sodium poly (meth) acrylate, poly (meth) acrylamide, alginic acid, sodium alginate, potassium alginate, propylene glycol alginate, starch, sodium starch glycolate, starch. The permeable waterproofing agent according to claim 4, which is at least one selected from sodium phosphate esters, methylcellulose, hydroxypropylcellulose and sodium carboxymethylcellulose. 6. A gelling agent for a gelling hydrophilic resin in water,
A compound which generates a metal cation having a valence of at least 1.
5. The permeable waterproofing agent according to any one of 4. 7. A compound which generates a metal ion having a valence of 2 or more in water is a silicate, a water-soluble alkaline earth metal salt, alum, a water-soluble aluminum salt, a water-soluble iron salt, a water-soluble manganese salt, a water-soluble zinc salt, and an alkaline earth. The permeable waterproofing agent according to claim 6, wherein the permeable waterproofing agent is at least one selected from metal oxides. 8. A method for preventing water leakage, comprising spraying the permeable waterproofing agent according to any one of claims 1 to 7 and then injecting water into the water leakage inlet with water.