JPH05272245A - Cut-off agent seal box - Google Patents

Abstract

PURPOSE:To prevent leakage and water immersion by installing a seal box, to which the cut-off agent filling pipe and discharge pipe of a valve material are mounted, onto a wall surface, in which a crack is generated, by using an anchor bolt and injecting a cut-off agent. CONSTITUTION:Anchor bolts 10 implanted along a cracking line are penetrated to the opened base of a cut-off agent seal box 2 while being oppositely faced to the positions to be repaired of a concrete wall surface 8, and a packing 12 is laid and the box body 2 is compressed and held onto the wall surface by nuts screwed to the anchor bolts 10. Each valve 13, 14 of cut-off filling pipes 6 and discharge pipes 7 is opened, a cut-off agent 1 is pressed into the box bodies 2 and water and air are discharged sufficiently and the valves 14 are closed, and the cut-off agent 1 is filled while being foamed and expanded by force-feed pressure, and permeated up to the deep section of a crack 9. Injection is completed, and the valves 13 are closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is intended to prevent water intrusion and water leakage from cracks generated in concrete structures such as tunnels, basements, dams, dams, pools, and outdoor structures.
A device for injecting a waterproofing agent into a crack.

[0002]

2. Description of the Related Art A conventional method for preventing water from leaking or leaking from a crack in a concrete structure is to cut a concrete surface portion of the crack into a V-shape and insert a resin injection pipe into the V-shaped cut-out. The resin injection pipe is fixed to the concrete wall by driving the quick-setting mortar so that the resin injection pipe is buried. After that, attach the injection nozzle to the resin injection pipe, inject the urethane foam resin, and the urethane foam resin that has been injected will contact water to foam and enter the deep part of the crack void and the branch crack to cure the adhesive. It is to stop the water.

As a method of repairing concrete cracks of this type, a roughly bowl-shaped pouring machine is held in a state of being pressed against a concrete wall repairing point by a stretchable support, and then it is condensed in the bowl of the pouring machine. Japanese Patent Publication No. 46-38310 discloses a method in which an agent is pressure-fed by a compressor so that a coagulant enters a concrete crack from the inside of a bowl.

As another repair method, a plate-shaped repair member is attached to the surface of the repair location with a small gap from the concrete surface, and the peripheral edge of the repair member is sealed with the concrete surface and a sealing member, and the above-mentioned gap Japanese Patent Laid-Open No. 60-138168 discloses a method in which the air in the space is exhausted by a pump to a vacuum state, then the filler is sucked into the space of the gap by its negative pressure, and repaired by the repair member and the filler. Are known.

[0005]

SUMMARY OF THE INVENTION In the conventional water stopping method in which a V-shaped cutout is provided, a V-shaped cutout is drilled along a crack on a concrete wall surface, and a resin injection pipe insertion step. Since it requires a setting process of quick-setting cement, it has been a problem in tunnel work, which requires a long time and must be performed in a short time. Further, if the cracks are curved, or if there are many cracks running in a direction orthogonal to the main cracks and many cracks around the cracks, it is difficult to stop water by the conventional method.

Further, in the water stop method disclosed in Japanese Examined Patent Publication No. 46-38310, a large-sized tunnel requires a long support member, and an outer vertical wall of a slope / building is supported on the side facing the repaired portion. Often there is nothing to support the member. Since concrete cracks are often long and continuous, when injected from one location, the filler moves along the crack, leaks from the opening of another crack location, pollutes the site, and penetrates the filler into the deep cracks. Will be insufficient. If a large number of bowl-shaped pouring machines are attached along the cracks in order to solve this problem, a large number of support members will be used, and the support members will become complex and it will be difficult to support them.

The support member blocks the movement of vehicles, people and equipment, and cannot be used in places where there is a lot of traffic and movement of automobiles, people and articles. Further, the coagulant is pressure-fed until it penetrates deeply, and the injector, the support member and the compressor must be used for a long period of time until the coagulant is hardened, resulting in poor work efficiency. There is a problem.

Next, in the repair method disclosed in Japanese Patent Laid-Open No. 60-138168, it is necessary to make the concrete repair point by the repair member and the seal member and the concrete repair point by the seal member in a vacuum state. However, in this case, this repair method cannot be adopted. For example, cracks may open on the back surface of the repaired part of the concrete wall on the slope, pool, drainage channel, etc.

It is difficult to seal even when continuous cracks are open at a distant side. Since the repair member is a long single plate, it is difficult and time-consuming to manufacture a repair member having a shape along the concrete wall when it is curved or bent like a tunnel wall. ..
Since it is sucked by the vacuum negative pressure, the force for advancing it to the deep part of the crack is weak. There is a problem.

An object of the present invention is to provide a practical water-stopping device for a new water-stopping method developed by the present applicant in order to solve the above-mentioned conventional water-stopping method.

[0011]

SUMMARY OF THE INVENTION The gist of the present invention, which has solved the above-mentioned problems, is to incline at least two opposing side surfaces of a box having a rectangular planar shape and an open bottom so as to spread toward the bottom, A waterproofing agent sealed box characterized in that a plurality of bolt holes, a waterproofing agent injection pipe with a valve, and a discharge pipe with a valve are provided on the upper surface of the body.

[0012]

[Function] The opened bottom surface of the waterproofing agent sealing box of the present invention is made to face the repaired portion of the concrete wall, and the anchor bolts planted along the crack lines of the concrete are passed through the bolt holes of the box body. Also, a nut is screwed onto the protruding portion of the anchor bolt penetrating with packing on the opening edge of the bottom face, and the box body is held in pressure contact with the concrete wall surface by the nut.

Next, a hose for pumping the waterproofing agent is connected to the waterproofing agent injection pipe with a valve of the present invention, the valves of the waterproofing agent injection pipe with a valve and the drainage pipe with a valve are opened, and the waterproofing agent is supplied. Inject it into the box body with a waterproofing agent injection pipe with a valve.

First, water and air in the box are discharged. When they are discharged, the valve of the discharge pipe with valve is closed to continue injecting the waterproofing agent. When the water blocking agent is filled in the box body, the box body is sealed by the packing and the valve, so that the water blocking agent is sent to deep cracks by the pressure feeding pressure.

When the water blocking agent is a foamed resin, the valve of the water blocking agent injection pipe with a valve is closed, and the foamed resin is sent to the depth of the crack by the expansion force associated with the foaming of the foamed resin filled in the box body.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings. In this embodiment, a hydrophilic one-pack type urethane / foam resin (TACSS [trade name], NL paste [trade name]) is used as the water blocking agent 1, and 250 × is used as the water blocking agent sealed box 2. Three
A box body 3 made of 00 mm stainless steel is used, and both side surfaces 4 on the long side of the box body 3 are inclined in a divergent manner in the downward direction, and bolt holes 5 are further provided at the four corners of the upper surface, and a short valve 1 is provided at two positions on the upper surface.
A water blocking agent injection pipe 6 with 3 and a discharge pipe 7 with a valve 14 are attached. In the figure, 8 is a concrete wall surface of a concrete building, 9 is a crack, 10 is an anchor bolt, 11 is a fastening nut of the box 3, and 12 is a packing.

In this embodiment, first, four sets of four are set along the main line of the crack 9 so as to pierce the line, and an anchor hole 10 is planted in the hole. ), See FIG. 2 (a)).

Next, the box-shaped packing 12 is laid, the waterproofing agent sealing box 2 is arranged, the anchor bolt 10 is passed through the bolt hole 5, and the tightening nut 11 is screwed into this to seal the waterproofing agent. The box 2 is fixed to the concrete wall surface 8 under pressure. Similarly, a large number of the water-stopping agent-sealed boxes 2 are similarly fixed (see FIG. 1).
(B), see FIG. 2 (b)).

After that, the valves 13 and 14 of the water blocking agent injection pipe 6 and the discharge pipe 7 are opened, and the water blocking agent 1 which is a urethane type eight times foamed resin is placed in the box 3 from the water blocking agent injection pipe 6. Press in. The water and air in the box body is discharged with the press-fitting 7
Discharge from. After the water and air are sufficiently discharged, the discharge pipe 7
Close the valve 14 of. Then, the injected water-stopping agent 1 of 8-fold foaming resin foams and expands, and the expansion pressure causes the water-stopping agent to enter through all the crack openings of the concrete wall surface in the box 3 and branch into the deep part and its branches. Enter deep into the crack. After the injection is completed, the valve 13 of the water blocking agent injection pipe 6 is also closed.

Since the box body is also sealed by the packing 12 with the wall surface, the foaming expansion force acts as a force for causing the waterproofing agent 1 to enter the crack 9 because the anchor bolt fixes the box body 3 firmly to the concrete wall surface. To work. In this way, the water blocking agent 1 penetrates into the deep portion of the crack 9 on the entire surface, and the concrete is adhesively cured so as to fill the void, thereby preventing water leakage and water infiltration from the crack.

By carrying out this step for all the waterproofing agent sealed boxes 2, water leakage and water infiltration from cracks are prevented (see FIGS. 1C and 2C). After the water blocking agent is hardened, the water blocking agent sealed box 2 may be left as it is, or may be removed after the construction is completed. Even if the concrete wall surface where the cracks 9 are present is concavely curved, since the box bodies 3 are continuous with the side surfaces that are inclined toward the end, the side surfaces of the adjacent box bodies 3 do not come into contact with each other and are continuous. (See FIG. 1C).

It should be noted that all the side surfaces of the box body of the present invention may be inclined toward the end so as to spread downward.

[0023]

As described above, according to the present invention, the work of waterproofing cracks in a concrete wall is performed only by fixing the box body with anchor bolts and injecting a waterproofing agent, so the construction period can be greatly shortened. .. Further, since the waterproofing agent is injected from all the openings on the bottom surface of the box body, not only the main cracks but also the cracks around the main cracks can be penetrated deeply to complete the waterproofing.

Further, even if the concrete wall surface to be repaired is concavely curved like a tunnel wall, at least two side faces are inclined, so that the side faces of the box body can be continuously arranged in an adjacent state without hitting. Furthermore, since the waterproofing agent sealed box of the present invention can be fixed with anchor bolts, the wall surface can be fixed easily.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a work process of the present invention.

FIG. 2 is an explanatory view showing a cross-sectional state of each work step of the present invention.

FIG. 3 is a perspective view of a waterproofing agent sealed box according to an embodiment of the present invention.

[Explanation of symbols]

 1 Water-stopping agent 2 Water-stopping agent sealed box 3 Box body 4 Side surface 5 Bolt hole 6 Water-stopping agent injection pipe 7 Discharge pipe 8 Concrete wall surface 9 Crack 10 Anchor bolt 11 Tightening nut 12 Packing 13 Valve 14 Valve

Claims (1)

[Claims] 1. A box having a rectangular planar shape and an open bottom has at least two opposite side surfaces inclined downwardly toward the bottom, and a plurality of bolt holes and a valve waterproofing agent are injected into the top of the box. A water-proofing agent sealed box characterized by having a pipe and a discharge pipe with a valve.