JP3332076B2 - Water stop method for P-con trace hole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stopping water at a P-container trace hole for filling a trace of a P-container (wooden concrete) holding a concrete form from a concrete wall.

[0002]

2. Description of the Related Art Generally, when concrete is worked on a wall or the like, a mold is first assembled. In this mold, bolts serving as separators are provided between two panels, and P-cons are attached to both ends of the bolts. On the other hand, separate bolts are attached to both ends of the P-con and penetrated through the panels on both sides, and are fixed with nuts from the outside to maintain the interval between the two panels. Then, the ready-mixed concrete is poured into the formwork. Remove the panel after curing.

The concrete wall from which the panel has been removed is in a state in which the P-container is embedded in the wall surface. If this is removed, the P-container trace hole 2 remains in the concrete wall 1 as shown in FIG. Mortar 3 is embedded in the surface to smooth the surface. However, since the outside of the wall 1 of the basement is buried in the ground, groundwater and the like,
From the mortar 3 through the inner P-con mark hole 2 along the bolt 4 from the inside.

[0004] For this reason, mortar 3 for filling the trace hole 2 of the P-con
Although waterstopping agents were mixed in water, water could not be stopped sufficiently in places with large amounts of groundwater. For this reason, conventionally, as shown in FIG. 6, a cloth 5 is wound around a bolt 4 protruding into the trace hole 2 of the P-container, and a plastic adhesive which reacts with water and hardens is included in the cloth 5 to exude. When it hardens by reacting with the groundwater, the bolt 4 and the P
A rubber-like elastic body layer 7 is formed between the inside and the concrete 6 in the inside to prevent seepage of water. When the seepage of groundwater disappears in this way, mortar 3
Was embedded to finish the surface.

However, in this method, it is troublesome to wind the cloth 5 around the bolts 4 in the many P-contract mark holes 2, and it takes a few minutes for a plastic adhesive to be included and to react. It was difficult to reliably stop the water in places where a large amount of groundwater would seep out. In addition, the method of stopping water with a plastic adhesive around which the cloth 5 is wound varies depending on the operator, and water leakage may occur after several years, and there is a problem that the repair work is troublesome.

[0006]

SUMMARY OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, makes it possible to reliably stop the water in the trace hole of the P-con for a long period of time by a very simple method, and greatly improves the workability. It is an object of the present invention to provide a method for stopping water at a trace hole of a P-conformer, which is improved to shorten a construction period and reduce a construction cost.

[0007]

According to a first aspect of the present invention, there is provided a method of stopping water from a trace of a P-container, wherein a ring-shaped flange is formed integrally with the periphery of an opening of a cylindrical body having one end opened. A liquid plastic-based adhesive that reacts with water and hardens into a rubber-like elastic body is injected into the inside of a water-stop cover made of water, and is put on the end of a bolt protruding into the P-con trace hole of the water-stop cover. Then, the flange is pressed against the concrete surface around the bolt, the plastic adhesive is hardened and water is stopped, and then the mortar or mortar disk is embedded in the trace hole of the P-con to smooth the concrete surface. It is a feature.

Further, in the method for stopping water of a trace of a P-container according to a second aspect of the present invention, the ring-shaped flange is formed in a suction cup shape.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to FIG. FIG. 1 shows a waterproof plastic cover 8 made of a soft plastic, which is formed by integrally forming a ring-shaped flange 11 around the periphery of an opening 10 of a cylindrical body 9 having one end opened. As shown in FIG. 1B, the ring-shaped collar portion 11 is formed in a suction cup shape having a concave curved surface toward the distal end side.

As shown in FIG. 2, the concrete wall 1 from which the panel has been removed is in a state where the ends of the bolts 4 protrude into the P-container trace holes 2 after the P-conformer has been removed. In this state, first, a liquid plastic adhesive 12 which reacts with water and hardens when injected into the inside of the soft plastic water stop cover 8. As the plastic adhesive 12, for example, a hydrophilic polyurethane resin as a main component,
This is a mixture of a polyisocyanate compound, a ketone-based, or an ester-based diluent, and has the property of reacting with water as a curing agent to cure into a sticky rubber-like elastic body. It is generally used for stopping water at a connection part.

The water-proof cover 8 into which the plastic adhesive 12 has been injected is placed sideways and put on the end of the bolt 4 as shown in FIG.
As shown in FIG. 5, the air inside is pushed out, the plastic adhesive 12 wraps around the outer periphery of the bolt 4, and is further pushed between the bolt 4 and the concrete 6 around the bolt 4 and the ring-shaped flange portion. 11 is also turned around. As a result, the air in the water stop cover 8 is extruded, and the surface of the collar 11 formed in a sucker shape is wet with the liquid plastic adhesive 12, so that the collar 11 is crushed into a flat plate shape. Then, it is brought into close contact with the surface of the concrete 6 inside the P-con mark hole 2, and is pushed by the atmospheric pressure to hold the water stop cover 8.

The water-stop cover 8 containing the plastic adhesive 12 is held in close contact with the surface of the concrete 6 with the bolts 4 inserted. In this state, when the groundwater that has exuded from the gap between the bolt 4 and the concrete 6 comes into contact with the plastic-based adhesive 12, the water becomes a hardening agent and reacts with the plastic-based adhesive 12 to form a stable polymer substance. Change and harden. This stable polymer substance becomes a sticky rubber-like elastic layer 7, which is formed in a state of being cut into the gap between the bolt 4 and the concrete 6 around the bolt, so that the seepage of groundwater from here is performed. Can be reliably prevented. In this case, there is a portion where a gas is generated by the reaction between water and the plastic adhesive 12 and foams. However, since the bubbles are closed cells, the passage of water can be prevented.

This plastic adhesive 12 has 3 to 5
It can be hardened in a matter of minutes and water can be reliably stopped, and the water-stop cover 8 in which the plastic adhesive 12 has been injected can be reliably held by the action of the suction cup just by pushing it over the bolt 4 and pushing it in. As described above, there is no need to wind the cloth 5 around the end of the bolt 4, and a large number of P
Can be performed in a short time. Thereafter, as shown in FIG. 4, a mortar 3 or a mortar disk is buried in the trace hole 2 of the P-container, and the surface of the concrete wall 1 is finished to be smooth.

In the above description, the ring-shaped flange 11 is formed in a sucker shape, but may be a flat plate. In addition, the present invention is not limited to the concrete wall 1 in the basement, and can be widely applied to the water stoppage of the earth retaining wall.

[0015]

As described above, according to the method for stopping water in the trace of a P-container according to the present invention, a very simple method of holding a water-stopping cover containing a plastic adhesive over a bolt and holding the same is achieved by a very simple method. This is an extremely excellent method that can surely perform water stoppage of a trace of a conical hole for a long period of time, greatly improve workability, shorten the construction period, and reduce the construction cost.

[Brief description of the drawings]

FIG. 1A is a perspective view of a water stop cover according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of the water stop cover.

FIG. 2 is a cross-sectional view showing a state in which a plastic adhesive is injected into the water blocking cover shown in FIG. 1 and attached to a bolt.

FIG. 3 is a cross-sectional view showing a state in which a water blocking cover shown in FIG. 2 is put on a bolt, a plastic adhesive is cured, and water is stopped.

FIG. 4 is a cross-sectional view showing a state where a concrete wall is finished by filling a mortar in a P-container trace hole in which water is stopped by covering a water stop cover with a bolt.

FIG. 5 is a cross-sectional view showing a concrete wall in which mortar is packed in a P-con mark hole.

FIG. 6 is a sectional view of a concrete wall in which a cloth is wound around a conventional bolt and water is stopped with a plastic adhesive.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete wall 2 P-container mark hole 3 Mortar 4 Bolt 5 Cloth 6 Concrete 7 Rubbery elastic layer 8 Waterproof cover 9 Cylindrical body 10 Opening 11 Ring-shaped brim 12 Plastic adhesive

Claims (2)

(57) [Claims] 1. A liquid that reacts with water and hardens into a rubber-like elastic body by reacting with water inside a soft plastic water-blocking cover in which a ring-shaped flange is formed integrally with the periphery of an opening of a cylindrical body having one end opened. The plastic adhesive is poured, and the water-stop cover is put on the end of the bolt protruding into the trace hole of the P-con. The flange is pressed against the concrete surface around the bolt to cure the plastic adhesive. And stop the water,
A method for stopping water at a P-con trace hole, wherein a mortar or a mortar disk is embedded in the P-con trace hole to smooth the concrete surface. 2. The method according to claim 1, wherein the ring-shaped flange is formed in a suction cup shape.