JPS60199123A - Water-proofing work for concrete wall - Google Patents

Abstract

PURPOSE:To prevent the leak of water by a method in which a water-proof pipe and a hose are provided in a space formed in the water leak portion of a concrete wall, and concrete is placed there and even on a stopper water-tightly attached to the water-proof pipe. CONSTITUTION:A defective portion responsible for water leakage of a concrete wall 1 is cut off to form a space 2, and a through hole 16 is drilled there. A water-proof pipe 6 of a length L1 is set in the space 2, a hose 3 is connected to the pipe 6, and ground water on the outside of the wall 1 is drained. The water- proof pipe 6 portion connected with the hose 3 is removed out, and concrete is placed in the space 2 to bury the pipe 6. After the concrete is cured, the hose 3 is removed out, a stopper 13 is water-tightly attached to the pipe 6 and fixed, and the remaining space 2 is filled with concrete 17. Ground water can thus be drained through the pipe 6, and the leakage of water can be prevented by the stopper 13 attached to the pipe 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waterproofing method for filling leaking parts of concrete walls such as basements with water.

In general, concrete walls such as basements, underpasses, tunnels, etc., may crack, crack, or become slab-like, creating gaps between gravel, depending on the pouring process and construction conditions. Groundwater outside the wall often leaks into the interior through the cracks.

Therefore, if there is such a water leakage point, as shown in Figure 1.2, cut out the defective part of the concrete wall 1 and drill a hole 2 through it, and insert the hose 8 into the through hole to drain the basement. etc., and while draining the groundwater outside the concrete wall 1 to the outside using the hose 8, concrete using a quick setting agent etc. is poured into the space 2 on the side of the hose 88, and after curing the concrete, remove the hose. 8 is pulled out and the end of the hole 4 left by the hose 8 is filled with quick setting cement 5 to make it waterproof.

According to the conventional waterproofing method for basements, etc., the defective part of the concrete wall 1 that causes water leakage is temporarily improved, but the rapid setting cement 5 is not completely stopped from flowing through the hole 4 left by the hose 8. Since it is applied to the area, there is a drawback that it cannot completely prevent water leakage in the area.

The purpose of the present invention is to solve the above-mentioned conventional problems, and to provide a new waterproofing method that completely waterproofs water leakage from concrete walls such as basements.

That is, the present invention achieves the above objects by cutting out a defective part of a concrete wall, forming a cavity that penetrates the concrete wall, inserting a waterproof pipe having a through hole into the cavity, and Connecting a hose to the end of the pipe to drain underground water, etc. from the outside of the concrete wall, then burying the waterproof pipe, leaving the hose connection part of the waterproof pipe, and pouring concrete into the void, Thereafter, the hose is removed, a stopper is watertightly attached to the end of the waterproof tube, and the through hole of the waterproof tube is closed to make it waterproof.

Hereinafter, an embodiment of the present invention will be explained in detail with reference to FIGS. 8 to 7.

Figure 8.4 of the figure shows the waterproof tube used in one embodiment of the present invention.
7 to 7 show a waterproofing method according to an embodiment of the present invention using the waterproof tube shown in FIG. 8.4. In the figure, a waterproof tube 6 used in the waterproofing method of the present invention has a pipe shape with a required length L, has a through hole 7 in the center, and has a polygonal shape in the center of the outer periphery. A rotation prevention part 9 (hexagonal in shape in the figure) is provided, and a corrugated part 8 having continuous irregularities is formed on the front and rear outer peripheries of the rotation prevention part 9. A female threaded portion 10 is formed on the inner periphery of the through hole 7 at one end of the waterproof tube 6, and a separate plug body 18 having a male threaded portion 12 is attached to the female threaded portion 10.
A packing groove 11 is formed at the edge of the through hole 7 at the end of the female threaded portion 10. Then, the backing 14 is fitted onto the plug body 18, and the plug body 1
8 is a waterproof pipe 6 which is fixed to the end of the through hole 7 in a watertight manner with a backing 14 and has a female threaded portion 10.
The structure is such that a drainage hose is tightly connected to the outer periphery of the drain hose. Reference numeral 15 in the figure indicates the tightening point when tightening the stopper 18.

The anti-rotation portion 9 having the above structure is intended to prevent the waterproof tube 6 from rotating when the stopper 1B is tightened into the through hole 7 during use, which will be described later. It may also be in the shape of The corrugated portion 8 is provided with the intention of increasing the surface length of the waterproof pipe 6 in the axial direction and preventing water from leaking along the outer circumference when the waterproof pipe 6 is buried in concrete. It may be replaced with other shapes such as

The waterproofing method of the present invention is carried out as follows using the waterproof pipe 6 having the above configuration.

In Figure 5.6.7, which shows the construction procedure, when a concrete wall 1 in a basement or the like leaks water, first cut out the defective part of the concrete wall 1 that is the cause of the water leak, and then create a vacant space 2 as shown in Figure 5. A through hole 16 that penetrates the concrete wall 1 is provided in the empty space 2. Then, select a waterproof pipe 6 with a length Ll that is slightly shorter than the thickness L2 of the concrete wall 1 in the relevant part, insert the waterproof pipe 6 into the cavity 2, and open the female threaded part 10 without the plug body 18. It is inserted into the inner wall of a basement or the like, and the other end is passed through the through hole 16. Next, attach the hose 8 to the outer circumference of the female threaded portion 10 of the waterproof tube 6 inserted into the space 2.
are connected to guide groundwater existing outside the concrete wall 1 for continuous and sufficient drainage.

Thereafter, concrete using a quick-setting agent or the like is placed in the void 2, the head of the waterproof pipe 6 to which the hose 8 is connected is removed, the waterproof pipe 6 is embedded, and the void 2 is filled with concrete.

Subsequently, after the concrete in the cavity 2 is cured, the hose 8 is removed and the stopper 13 is immediately attached and fixed to the waterproof pipe 6 in a watertight manner, thereby completely closing the waterproof pipe 6 in a watertight manner.

Then, the remaining empty space 2 is filled with concrete 17, etc., and the wall surface is finished to complete the waterproofing work.

Next, another embodiment of the present invention will be described with reference to FIG. The figure shows a waterproofing method when long continuous cracks occur in the vertical direction or leak holes are scattered in clusters in a concrete wall 1 of a basement or the like. Two hollow spaces 2B2C are bored at required intervals, and a waterproof pipe 6 is inserted into each hollow space in the same manner as in the previous embodiment, and a hose 8 is connected to the space. be completely discharged. After that, a small notch was made in the inner part of the concrete wall 1 left between the two vacant spaces 2B and 2B2C, and that part was filled with quick setting cement 18, etc. to completely waterproof the area. Blank space 2A
Pour concrete on 2B20. Then, as in the previous embodiment, each waterproof tube 6 is closed with a stopper 18 to waterproof the continuous parts such as the wall.

According to the above-described waterproofing method of the present invention, the waterproof pipe 6 is inserted into the void 2 that has been cut out from the defective part, and underground water that is harmful to waterproofing work is continuously and sufficiently discharged. It will not be attacked by groundwater seepage, and is cast and cured in excellent condition, completely preventing water leakage.

Then, a stopper 18 with a backing 14 interposed is attached to the tip of the waterproof pipe 6 embedded in the new concrete, so the through hole 7 is completely closed, and water leakage from that part is mechanically completely prevented. The concrete wall 1 of a basement or the like where water leakage has occurred can be completely cured without fear of water leakage occurring again.

If the waterproof pipe 6 of the present invention is mass-produced in various thicknesses and lengths, water leakage situations that require waterproofing work (
Water to be forcibly drained (fIL, etc.) can be freely selected depending on the thickness of the concrete wall and waterproofing work can be carried out quickly, simplifying waterproofing work compared to conventional methods.
This has the advantage of shortening the construction period.

In particular, according to the waterproof pipe 6 of the above embodiment, the waterproof pipe 6 has the corrugated part 8 and the rotation stopper part 9, and the waterproof pipe 6 is mechanically and firmly fixed to the concrete filling the void space 2. When tightened, the waterproof pipe 6 will not rotate and separate from the surrounding concrete, and water leakage that will be transmitted in the axial direction around the outer circumference of the waterproof pipe 6 will also be prevented, further improving the waterproofing effect. Since the waterproofing method of the present invention can locally waterproof the area where water leakage occurs, it can be widely applied not only to basements as in the above embodiment, but also to underground passages, tunnels, etc.

As described above, the present invention provides a practical method for waterproofing concrete IJ-walls, which has an excellent waterproofing effect and allows waterproofing to be carried out simply and quickly.

[Brief explanation of drawings]

Figure 1.2: A front view showing a conventional concrete wall waterproofing construction method; Figure 8 (1) is a front view showing a waterproof pipe and its stopper according to an embodiment of the present invention); a side view of the waterproof pipe; Figure 4: Longitudinal sectional view of the waterproof pipe in Figure 8, Figure 5.6.7 A front view showing the construction procedure of the present invention - Example 2, Figure 8 2 A front view showing another embodiment of the present invention Main symbols in the diagram: 1; concrete wall; 2: void; 8: hose; 6: waterproof pipe; 7: through hole; (A)

Claims (2)

[Claims] (1) In waterproofing leaking parts of concrete walls,
The defective part of the concrete wall is cut out and a cavity is formed through the concrete wall, a waterproof pipe having a through hole is inserted into the cavity, and a hose is connected to the end of the waterproof pipe to drain underground water. Then, leaving the hose connection part of the waterproof pipe, the waterproof pipe is buried and concrete is poured into the void.Then, the hose is removed and a plug is installed at the end of the waterproof pipe. A method for waterproofing a concrete wall, characterized in that the body is installed watertight and the through hole is closed to make it waterproof. (2) A method for waterproofing a concrete wall according to claim (1), which uses a waterproofing pipe having a protruding anti-rotation portion on its outer periphery.