JP4230616B2 - Water-stop material and water-stop method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a structure in which a linear body such as an electric cable is inserted into a pipe provided in a housing and the like, and water leakage occurs in the pipe, such as an underground cavern, a manhole, etc. The present invention relates to a water-stop material and a water-stop method for use.
[0002]
[Prior art]
In FIG. 6, a pipe 2 is embedded in a frame 1 that becomes a wall such as an underground cavern or a manhole, and a cable 33, which is a striate body, is inserted into the pipe 2 to prevent water leakage in the pipe 2. It shows a structure in which a water blocking material is installed.
The water stop material shown here has plate-like inner and outer rubber packings 6 and 8 and a metal plate 9, and is made of butyl rubber or the like between the rubber packings 6 and 8, the metal plate 9 and the cable 33. The caulking material 5 is filled.
[0003]
In order to install the water blocking material, the cable 33 is passed through the rubber packings 6 and 8 and the insertion holes 6 a, 8 a and 9 a of the metal plate 9, and the rubber packings 6 and 8, the metal plate 9 and the cable 33 are connected. After filling the caulking material 5 made of butyl rubber or the like between them, the rubber packings 6, 8, the metal plate 9 and the cable 33 are pushed into the pipe line 2 so that the inner rubber packing 6 enters the pipe line 2. 9 is fastened to the cylindrical waterproof jig 4 provided at the pipe port 2a of the pipe line 2 by screwing or the like through the outer rubber packing 8.
[0004]
[Problems to be solved by the invention]
However, in the above prior art, when a long time passes, a gap is formed between the caulking material 5 and the cable 33 due to deterioration and contraction of the caulking material 5, and water leakage may occur from this portion.
Further, when the cable 33 moves in the cable length direction with respect to the pipe line 2 due to thermal expansion due to heat generated by energization, a gap is formed between the caulking material 5 and the cable 33, and this portion There was a case where water leakage occurred.
Moreover, the said water stop material had the dissatisfaction which takes time to install.
This invention is made | formed in view of the said situation, and it aims at providing the water stop material and water stop construction method which can be installed easily and can maintain high water stop for a long period of time.
[0005]
[Means for Solving the Problems]
The water-stopping material of the present invention is a water-stopping material that is installed in a pipe line through which the striate body is inserted to stop the pipe line, and is formed with an insertion hole through which the striate body is inserted. In the body, a cut from the outer surface to the insertion hole is formed along the insertion hole forming direction, and the porous body is impregnated with a hydrophilic polymerization curable liquid waterproofing agent before the porous body is installed in the pipe line. It is characterized by being.
Further, the water-stop material of the present invention is a water-stop material installed in a pipe line through which a multi-strand body composed of a plurality of single-wire strips is inserted, and which stops the pipe, A first porous body having an insertion hole through which the body is inserted and a second porous body installed in a gap between the single filaments, the first porous body includes An incision extending from the outer surface of the porous body to the insertion hole is formed along the insertion hole forming direction, and the first and second porous bodies are installed before the first and second porous bodies are installed in the duct. Further, it is impregnated with a hydrophilic polymerization curable liquid water stopping agent.
At least a part of the notch is preferably formed with a bent part whose forming direction is bent with respect to the other part, and the bent part is preferably formed in a wedge shape.
Further, the water stopping method of the present invention is a method of stopping water using a porous body impregnated with a hydrophilic polymerization-curing liquid water stopping agent , in a pipe line through which a filament is inserted, body, the umbilical member has a through hole for inserting and wherein the notch extends from the porous outer surface in the insertion hole are those formed along the insertion hole forming direction, hydrophilic polymer curing liquid stop After opening the cut of the porous body impregnated with the liquid agent , and positioning the linear body in the insertion hole through the generated gap, the cut is closed and the porous body is pushed into the pipe line. and it is characterized in the early days.
Further, the waterproofing method of the present invention includes the first and second porous materials in which a multi-filament composed of a plurality of single filaments is inserted and impregnated with a hydrophilic polymerization curable liquid waterproofing agent. A method of stopping water using a body, wherein the first porous body has an insertion hole through which the linear body is inserted, and a cut from the outer surface of the first porous body to the insertion hole is inserted. It is formed along the hole forming direction, and the second porous body is formed so that it can be installed in the gap between the single filaments constituting the multi-striatum, and is hydrophilic. Opening the cut of the first porous body impregnated with the polymerization curable liquid water-stopping agent , and positioning the multi-striate body in the insertion hole through the generated gap, and constituting the multi-striate body to the gaps between the single striatum, after placing the second porous body hydrophilic polymer curing liquid waterproofing agent has been impregnated, before Cuts closed and is characterized the early days Push these porous body conduit.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a first embodiment of a water-stopping material of the present invention. The water-stopping material shown here is a cylindrical body 11 that is a porous body installed in a pipe 2. Further, it is impregnated with a hydrophilic polymerization curable liquid water stopping agent.
The cylindrical body 11 is formed with an insertion hole 12 through which the cable 3 that is a linear body is inserted. The cylindrical body 11 is formed with one notch 13 extending from the outer surface of the cylindrical body to the insertion hole 12 along the insertion hole forming direction.
[0007]
The cylindrical body 11 is designed according to the shape of the pipe line 2 into which the cylindrical body 11 is inserted. The outer diameter of the cylindrical body 11 indicated by the symbol A in the figure is set to be approximately equal to the inner diameter of the pipe line 2 or slightly larger than the inner diameter of the pipe line 2. In particular, it is desirable that the inner diameter of the pipe line 2 is set to be about 1 to 3 mm, preferably about 3 mm.
This is because the cylindrical body 11 is made of a porous material having compressive elasticity, and therefore, the cylindrical body 11 is formed in the pipe line 2 by forming the outer diameter of the cylindrical body 11 slightly larger than the inner diameter of the pipe line 2. This is because it becomes possible to come into close contact with the inner surface of the film.
Moreover, it is desirable that the length of the cylindrical body 11 indicated by a symbol L in the drawing is about 60 to 150 mm from the viewpoint of the water stop effect.
[0008]
The insertion hole 12 formed in the cylindrical body 11 is formed so as to have a substantially circular cross section, and the inner diameter indicated by the symbol B in the drawing is substantially equal to the outer diameter of the cable 3 or slightly smaller than the outer diameter of the cable 3. It is formed. In particular, it is preferable that the outer diameter of the cable 3 is designed to be about 1 to 3 mm, preferably about 3 mm.
This is because, since the cylindrical body 11 has compression elasticity, the cylindrical body 11 can come into close contact with the outer surface of the cable 3 by forming the inner diameter of the insertion hole 12 slightly smaller than the outer diameter of the cable 3. Because.
[0009]
A bent portion 14 whose formation direction is bent with respect to the other portions is formed at a substantially central portion of the cut 13.
The bent portion 14 is for preventing the flow of water from the inside of the pipe line 2 to the outside in the cut 13, thereby improving the water stoppage, and the other portion is formed along the insertion hole 12. On the other hand, it is formed so as to be bent in a wedge shape with respect to the insertion hole forming direction.
In the bent portion 14, a wedge-shaped concave portion 14a formed on one cut surface of the cut 13 is fitted with a convex portion 14b formed on the other cut surface.
The formation position of the bent portion 14 is not limited to the central portion of the notch 13 and may be closer to the end portion in the insertion hole forming direction than the central portion.
[0010]
The cylinder 11 is made of a porous material.
The porous material is preferably one having excellent mechanical strength (compressive strength, tensile strength, etc.), stretchability, compression elasticity, excellent weather resistance, and easily penetrated by a hydrophilic liquid waterproofing agent. For example, a foam having an open cell structure, a fiber lump formed by intertwining relatively hard fibers, and the like are preferably used.
Specific examples include urethane foam, steel wool and the like, and it is particularly preferable to use a urethane foam having no cell membrane.
[0011]
As this porous material, a material having a compressive strength (conforming to JIS K6401) of 5 kg / cm ² or more, a tensile strength (conforming to JIS K6301) of 2 kg / cm ² or more, and an elongation (conforming to JIS K6301) of 50% or more is used. It is desirable. This is because when these compressive strength, tensile strength, and elongation are within the above ranges, the water-stopping property can be reliably maintained even when the cable 3 moves relative to the conduit 2.
[0012]
The hydrophilic polymerization curable liquid water-stopping agent (hereinafter simply referred to as a hydrophilic water-stopping agent) is hydrophilic and polymerized curable, that is, contains one or more monomers, and is plastic in an uncured state. Those having excellent low viscosity and fluidity and being cured with the polymerization reaction of the monomer are preferably used.
In addition, it is insoluble in water in a cured state, has sufficient stretchability, has water tightness, that is, has a property of swelling when absorbed, and has chemical resistance, bacterial resistance, and heat cycle resistance. It is desirable to have excellent (−70 to 100 ° C.) properties, acid resistance, and alkali resistance.
[0013]
Examples of such a hydrophilic water-stopping agent include a vinyl monomer and a crosslinkable monomer added with a polymerization catalyst together with water.
The vinyl monomer is preferably a hydrophilic vinyl monomer. Examples of the hydrophilic vinyl monomer include (meth) acrylic acid and its metal salt, vinyl acetate, vinyl alcohol, acrylamide, N-methylolacrylamide, maleic acid and its metal salt, and the like. Among them, (meth) acrylic acid metal salts are particularly preferable. As the (meth) acrylic acid metal salt, for example, (meth) acrylic acid magnesium salt, (meth) acrylic acid calcium salt, (meth) acrylic acid sodium salt can be used, and among these, (meth) acrylic acid magnesium salt Is preferred.
[0014]
As the crosslinkable monomer, a monomer having a property of being polymerized in a certain curing time by mixing with the vinyl monomer in the presence of a polymerization catalyst and water to be cured into a hydrous gel state is used. Monomers, in particular N, N′-methylenebis (meth) acrylamide and polyfunctional (meth) acrylates are preferred, and among these (meth) acrylates, one or more alkylene glycols are shown as having relatively high hydrophilicity. And (meth) acryloyloxy groups at both ends of the main chain.
Specific examples of such polyfunctional monomers include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, propylene glycol di (meth). ) Acrylate, dipropylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate and the like.
[0015]
It is preferable to use a redox catalyst as the polymerization catalyst. Examples of the redox catalyst include those containing ammonium persulfate, potassium persulfate and the like as an oxidant component and those containing sodium thiosulfate, Rongalite, sodium sulfite, triethanolamine and the like as a reducing agent component.
Further, the addition amount of the polymerization catalyst is usually 0.1 to 100 parts by weight with respect to 100 parts by weight of the two types of monomers, and the curing time of the hydrophilic water-stopping agent is 5 to 60 seconds. It is preferable to set appropriately from the above range.
[0016]
Specific examples of the hydrophilic water-stopping agent include 8 to 16% by weight of a vinyl monomer, 12 to 24% by weight of a polyfunctional monomer, 50 to 70% by weight of water, and 10% by weight of an amine component in a redox catalyst. And a B agent composed of 98 to 99.5% by weight of an equal weight mixture of ethylene glycol and water and 0.5 to 2% by weight of a peroxide.
By setting the hydrophilic water-stopping agent to the above composition, the cured product has a property of absorbing water and expanding when it comes into contact with water.
[0017]
Moreover, you may contain a fine particle cement in this hydrophilic water stop agent.
The fine particle cement is for imparting mechanical strength such as compression resistance to the water-stopping portion, and has a property of being hardened by hydration.
As the fine particle cement, it is preferable to use a cement having a brain value of 12000 to 13000 cm ² / g. As a commercially available product suitable as the fine particle cement, Mitsubishi Fine Hard manufactured by Ube Mitsubishi Cement Co., Ltd. can be exemplified.
When the brane value is less than 12000 cm ² / g, the hydration reaction rate is low, it takes a long time to cure, and uniform mixing becomes difficult when mixing with a hydrophilic water-stopping agent. This is not preferable because there is a risk that the mechanical strength of the water-stopped portion may be reduced. On the other hand, if the brane value exceeds 13000 cm ² / g, the mixture tends to become non-uniform due to precipitation of cement particles, which is not preferable. The compounding amount of the fine particle cement is preferably 2 to 10 parts by weight, more preferably 4 to 6 parts by weight with respect to 100 parts by weight of the hydrophilic water-stopping agent.
[0018]
Next, with reference to FIG. 3, the first embodiment of the water stop construction method of the present invention will be described by taking as an example the case of using the water stop material of the first embodiment.
First, as shown in FIG. 3A, the notch 13 of the cylindrical body 11 is opened, and the cable 3 is positioned in the insertion hole 12 through the generated gap.
Next, as shown in FIG. 3B, the notch 13 is closed, and thereby the cylindrical body 11 is mounted at a desired position of the cable 3.
Next, as shown in FIG. 3C, the cylindrical body 11 is pushed into the pipeline 2 from the pipeline port 2a.
Since the cylindrical body 11 is made of a porous material having elasticity, even when the outer diameter of the cylindrical body 11 is larger than the inner diameter of the pipe 2, the cylindrical body 11 is compressed to reduce the diameter. The cylindrical body 11 can be pushed into the pipe 2 by forcibly swaging.
[0019]
Next, the hydrophilic water blocking agent is poured into the cylindrical body 11 and impregnated throughout.
When using a hydrophilic water-stopping agent, separate at least a part of each component of the hydrophilic water-stopping agent from other components so that the polymerization reaction does not proceed, and mix these immediately before use. Injection into the cylindrical body 11 is performed while the hydrophilic water-stopper is in an uncured state in which the polymerization reaction has not yet proceeded.
The hydrophilic water-stopping agent is cured by the polymerization reaction in a state where the entire cylindrical body 11 is spread.
The amount of the hydrophilic water-stopper added to the cylindrical body 11 is preferably 90% by volume or more with respect to the capacity of the cylindrical body 11.
[0020]
In the water blocking material, the cylindrical body 11 in which the insertion hole 12 through which the cable 3 is inserted is formed with a cut 13 extending from the outer surface to the insertion hole 12 along the insertion hole forming direction. Since the agent is impregnated, the cylindrical body 11 is mounted at a desired position of the cable 3 by a simple operation of opening the cut 13 of the cylindrical body 11 and positioning the cable 3 in the insertion hole 12 through the generated gap. be able to. Therefore, it can be installed by an easy operation.
[0021]
Further, since the cylindrical body 11 is made of a porous material having sufficient stretchability and compression elasticity, and the hydrophilic water-stopper impregnated therein exhibits sufficient stretchability even after curing, these columns The body 11 and the hydrophilic water-stopping agent are always in a shape corresponding to the inner surface shape of the pipe line 2 and the outer surface shape of the cable 3 and are in contact with the pipe line 2 and the cable 3 without a gap.
Therefore, even when the cable 3 moves with respect to the pipe line 2 due to heat generation due to energization, thermal expansion due to temperature change, etc., it is possible to maintain high water stoppage over a long period of time.
In addition, since the hydrophilic water-stopping agent has a property of swelling due to water absorption, the water-stopping material absorbs the water leakage when in contact with water leakage, swells, and more closely contacts the pipe line 2 and the cable 3. Water stoppage is enhanced.
[0022]
Further, by forming a bent portion 14 in which the forming direction is bent with respect to the other portion in a part of the cut 13, the flow of water from the inside of the pipe line 2 in the cut 13 to the outside can be prevented in this portion. . For this reason, a water stop can be improved.
[0023]
Further, by forming the bent portion 14 in a wedge shape, the convex portion 14b formed on the other cut surface is fitted into the wedge-shaped concave portion 14a formed on one cut surface of the cut 13. Become.
For this reason, when pushing the cylindrical body 11 into the pipe line 2, it can prevent that the relative position between both cut surfaces shifts | deviates to the direction of an insertion hole.
Therefore, it is possible to prevent the contact area between both the cut surfaces from being lowered, to prevent water leakage through the cuts 13, and to prevent the water stoppage from being lowered.
[0024]
Moreover, by including a fine particle cement having a property of being cured by hydration in the hydrophilic water-stopping agent impregnated in the water-stopping material, it is possible to enhance the properties such as the sealing property and compression resistance of the water-stopping material.
Therefore, even when a large force is applied to the water-stopping material due to an earthquake or the like, the water-stopping material is not broken and high water-stopping performance can be maintained.
[0025]
4 and 5 show a second embodiment of the water-stopping material of the present invention, and the water-stopping material shown here is a single cable 33a that is a plurality of (three in this embodiment) single wire strips. It corresponds to a pipe line through which a multi-strip cable 33, which is a multi-striped wire body twisted together.
This water blocking material includes a cylindrical body 21 which is a first porous body in which an insertion hole 22 is formed, and a water blocking string 25 which is a second porous body installed in a gap between the single cables 33a. The cylindrical body 21 and the water stop string 25 are impregnated with a hydrophilic water stop agent.
In the cylindrical body 21, as in the first embodiment, a cut 23 extending from the insertion hole 22 to the outer surface is formed along the insertion hole forming direction. A similar bent portion 24 is formed.
[0026]
The insertion hole 22 is formed so that a circle having a shape corresponding to the single cable 33a constituting the multi-strip cable 33 has a cross-sectional shape in which the number of the cables 33a (three in this embodiment) is gathered.
The inner diameter (reference numeral B ′ in the figure) of the portion of the insertion hole 22 in which the single cable 33a is accommodated is substantially equal to the outer diameter of the cable 33a or slightly smaller than the outer diameter of the cable 33a. In particular, it is preferable that the outer diameter of the cable 33a is designed to be about 1 to 3 mm, preferably about 3 mm.
[0027]
The waterstop string 25 is for preventing water leakage from the gap between the single cables 33a, and is obtained by impregnating a string-like material made of the porous material with a hydrophilic waterstop.
The water stop string 25 is installed in the gap between the cables 33a, and has a shape capable of closing the gap when impregnated with a hydrophilic water stop agent. The length of the water stop string 25 is preferably L to 10 L (a length corresponding to 1 to 10 times the length L in the drawing).
[0028]
Next, the second embodiment of the water stop construction method of the present invention will be described by taking the case of using the water stop material of the present embodiment as an example.
The notch 23 of the cylindrical body 21 is opened, and the multi-strip cable 33 composed of a plurality of single cables 33a is positioned in the insertion hole 22 through the generated gap, and the water stop string 25 is extended in the gap between the cables 33a. After the installation along the direction, the cut 23 is closed, the cylindrical body 21 is pushed into the pipe 2 from the pipe opening 2a, and a hydrophilic water-stopping agent is injected and impregnated into the cylindrical body 21 and the water stop string 25.
For installation of the water stop string 25, a method of inserting the water stop string 25 into the gap of the single cable 33a can be adopted.
[0029]
In the water-stopping material of the present embodiment, it can be easily installed as in the case of the water-stopping material of the first embodiment, and a high water-stopping property can be maintained over a long period of time.
Moreover, since the water stop string 25 installed in the gap between the single cables 33a is made of a porous material having sufficient stretchability and compression elasticity and impregnated with a hydrophilic water stop agent, these water stop strings 25 and the hydrophilic water-stopping agent are always in a shape corresponding to the outer surface shape of the cable 33a, and are in contact with these without a gap. Accordingly, water leakage from this gap can also be prevented.
[0030]
In each of the above embodiments, the cylindrical bodies 11 and 21 and the waterstop string 25 are installed in the pipe line 2 and then a method of impregnating them with the hydrophilic waterstop agent is exemplified. These can be installed in the pipe line 2 after impregnating the cylindrical water bodies 11 and 21 and the water stop string 25 with the water-stopping agent.
Moreover, in the said embodiment, although the bending parts 14 and 24 were formed only in one place in the notches 13 and 23, they can also be formed in several places.
[0031]
【Example】
Hereinafter, specific examples will be shown to further clarify the effects of the present invention.
(Example)
The water stop material shown in FIG. 4 and FIG. 5 was produced as follows. Urethane foam is used as the porous material, and this has a shape having an insertion hole 12 that has an outer diameter of 128 mm, a length of 70 mm, and a central portion of three circles having a cross section of 36 mm in outer diameter. The cylindrical body 11 was obtained by forming the cut 13 having one wedge-shaped bent portion 14.
Moreover, as the water stop string 25, the cross-sectional shape was a regular triangle with a side of 20 mm and a length of 500 mm.
[0032]
Next, a hydrophilic water stopping agent was prepared as follows. As the hydrophilic water-stopping agent, A agent composed of 25% by weight of polyethylene glycol dimethacrylate, 10% by weight of magnesium acrylate, 55% by weight of water, and 10% by weight of triethanolamine, 49.5% by weight of ethylene glycol, water What mixed 49.5 weight% and B agent which consists of 1 weight% of ammonium persulfate just before use was used.
[0033]
The cylindrical body 11 and the water stop string 25 were impregnated with this hydrophilic water stop agent. The amount of the hydrophilic water-stopper added to the cylindrical body 11 and the water-stop string 25 was 90% by volume.
[0034]
As shown in FIG. 5, the water stoppage method of the present invention was applied to water leakage from a pipe line 2 embedded in a case 1 of an existing manhole constructed using a case 1 made of reinforced concrete.
The conduit 2 embedded in the housing 1 has an inner diameter of 150 mm made of FRP, and a multi-strip cable 33 in which three single cables 33 a (outer diameter 47 mm) are twisted is inserted into the conduit 2. In this pipe 2, water leakage generated in the inner part of the pipe 2 was flowing out from the pipe port 2 a.
After the water stop string 25 is press-fitted into the gap between the single cables 33a, the notch 13 of the cylindrical body 11 is opened, the multi-strip cable 33 is inserted into the insertion hole 12, and the cylindrical body 11 is forced into the insertion hole 22 by force. I pushed it in.
After the pipe 2 that had been stopped in this way was left for one year, it was examined whether or not water leakage occurred.
[0035]
(Comparative example)
As shown in FIG. 6, the cable 33 extending from the pipe line 2 similar to the above embodiment is passed through the inner and outer rubber packings 6 and 8 and the insertion holes 6a, 8a and 9a of the metal plate 9, and the rubber packing. The caulking material 20 made of butyl rubber was plugged between the cables 6 and 8 and the cable 3.
Next, the rubber packings 6, 8 and the metal plate 9 are pushed into the pipe line 2 together with the cable 33, and the metal plate 9 is fastened to the waterproof jig 4 via the rubber packing 8 and the pipe line 2 is stopped. Left for 1 year and checked whether water leakage occurred.
[0036]
As a result of the above test, in the pipe line stopped by the construction method of the comparative example, a gap was formed between the caulking material and the cable, and water leaked from here, whereas the pipe stopped by the construction method of the example It was found that no water leakage occurred on the road, and good water stoppage was maintained.
[0037]
【The invention's effect】
As described above, in the water blocking material of the present invention, the notch extending from the outer surface to the insertion hole is formed along the insertion hole forming direction in the porous body in which the insertion hole through which the linear member is inserted is formed. The porous body is formed by a simple operation of opening this notch and positioning the filament in the insertion hole through the generated gap. It can be mounted at a desired position on the strip. Therefore, it can be installed by an easy operation.
[0038]
In addition, since the porous body and the hydrophilic polymerization curable liquid water-stopper have stretchability and compression elasticity, they always have shapes according to the inner surface shape of the pipe line and the outer surface shape of the striate body. It will be in the state which contacted the filament without gap.
Therefore, even when the striate moves with respect to the pipe line due to heat generation due to energization, thermal expansion due to temperature change, etc., it is possible to maintain high water stoppage for a long period of time.
[0039]
Moreover, the 1st porous body in which the penetration hole which a multi-striate body penetrates was formed, and the 2nd porous body installed in the clearance gap between the single filaments which comprise the said multi-striate body By using the water stop material provided with, water leakage from this gap can also be prevented.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of a waterstop material of the present invention, in which (a) is a perspective view and (b) is a front view.
FIG. 2 is a cross-sectional view showing the water blocking material shown in FIG.
FIG. 3 is a process diagram showing an example of a method of using the water blocking material shown in FIG.
FIGS. 4A and 4B show a second embodiment of the water stop material of the present invention, in which FIG. 4A is a perspective view and FIG. 4B is a front view.
FIG. 5 is a cross-sectional view showing the water stop material shown in FIG. 4;
FIG. 6 is a cross-sectional view showing an example of a conventional water stop material.
[Explanation of symbols]
2 ... pipe, 3 ... cable (striate),
11 ... cylindrical body (porous body), 12, 22 ... insertion hole,
13, 23 ... notches, 14, 24 ... bent parts,
21 ... Cylinder (first porous body)
25 ... water stop string (second porous body),
33 ... Multi-strip cable (multi-strip wire)
33a ... Single cable (single wire strip)

Claims (6)

It is installed in the pipe line through which the striatum is inserted, and is a water stop material that stops this pipe line,
Before the porous body is installed in the duct , a cut from the outer surface to the insertion hole is formed in the porous body in which the insertion hole through which the linear body is inserted is formed. A waterstop material, wherein a porous polymer-impregnated liquid waterstop agent is impregnated in a porous body . It is installed in a pipeline through which a multi-filament consisting of a plurality of single filaments is inserted, and is a water stop material that stops this pipeline,
A first porous body having an insertion hole through which the multi-striate body is inserted, and a second porous body installed in a gap between the single wire bodies,
In the first porous body, a cut from the outer surface of the porous body to the insertion hole is formed along the insertion hole forming direction,
The first and second porous bodies are impregnated with a hydrophilic polymerization curable liquid water-stopping agent before the first and second porous bodies are installed in the pipe. Waterproof material.   The waterstop material according to claim 1 or 2, wherein a bent portion whose forming direction is bent with respect to the other portion is formed in at least a part of the cut.   The water stop material according to claim 3, wherein the bent portion is formed in a wedge shape. It is a construction method for stopping water using a porous body impregnated with a hydrophilic polymerization curable liquid water stopping agent , through a pipe line through which the striate body is inserted,
The porous body has an insertion hole through which the filament is inserted, and a cut from the outer surface of the porous body to the insertion hole is formed along the insertion hole forming direction,
After opening the cut of the porous body impregnated with the hydrophilic polymerization curable liquid water-stopping agent , and positioning the linear body in the insertion hole through the generated gap, the cut is closed, waterproofing construction method, wherein the early days push to the conduit. This is a construction method in which a pipe line through which a multi-filament made of a plurality of single filaments is inserted is stopped using the first and second porous bodies impregnated with a hydrophilic polymerization-curing liquid water-stopping agent. And
The first porous body has an insertion hole through which the linear body is inserted, and a cut from the outer surface of the first porous body to the insertion hole is formed along the insertion hole forming direction. ,
The second porous body is formed so that it can be installed in the gap between the single filaments constituting the multiple filaments,
The first porous body impregnated with the hydrophilic polymerization curable liquid water-stopper is opened, and the multi-striate body is positioned in the insertion hole through the generated gap. After installing the second porous body impregnated with a hydrophilic polymerization curable liquid water-stopping agent in the gap between the single filaments constituting the structure, the notch is closed, and the porous body is placed in the pipe line. stop water method characterized by the son-in-law press is included in the room rate.

Images