JP2545536B2 - Leakage prevention method for concrete construction - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a water-stopping method for stopping water leakage from cracks and junkers generated in a concrete structure.

Conventional technology When a crack or water leak from a janker in a concrete structure is applied, when the water leak is stopped, etc. Alternatively, a method of collecting the leaked water in a door gutter or the like and guiding it to an unobtrusive place, and applying a quick-stop water-stopping material to the cracks or the jumper without leaking water has been used.

Problems to be Solved by the Invention The inner surface of the crack or the junker is formed by an irregular uneven surface, and therefore, even if the elastic impermeable material is pushed into the crack or the junker having the above irregular inner surface, However, it was difficult to stop the leak sufficiently by the conventional method.

Means for Solving the Problems For the above-mentioned purpose, the inner surface is smooth and a groove having a uniform width is formed by expanding the crack or the jumper along the crack or the jumper generated in the concrete structure, An elastic water impermeable material that is slightly thicker than the groove width is pushed into the premises leaving a hollow portion in the back, and a drain port communicating with the hollow portion is formed at the bottom of the groove. Part of the elastic impermeable material is filled with a quick-stop water blocking material on the outer side of the elastic water-impermeable material, and after the quick-setting water blocking material is solidified, the drain port is closed with the elastic water impermeable material, and the closed drain port is closed. After being filled with the quick-setting and water-stopping material and cured, the quick-setting and water-stopping material is applied and finished with a waterproof material on the entire premises.

The quick-stop water blocking material is hard to solidify in the presence of water leaks, so the inner surface cut along the cracks and junkers has a smooth inner surface, and an elastic impermeable material is packed into a groove of uniform width to prevent water leakage at the bottom of the groove. The water is drained from the opening left behind, and the quick stop waterproof material is applied to the part other than the drain port portion, and after the quick stop waterproof material is solidified, the drain port is closed and the quick stop waterproof material is sealed. .

Example Using a tool such as a rotary cone along a vertically extending crack (1 ′) formed in a structure (1) such as a concrete wall, as shown in FIG. 1, the inner surface was smoothed, and , The inner peripheral surface of the cross section is formed in a U shape, and the groove (2) having a uniform width is excavated with an appropriate depth, and an elastic impermeable material (3) thicker than the width of the groove (2) is formed. It is pushed into the groove (2) leaving a hollow part (2 ') for water passage in the inner part, and then, as shown in Fig. 2, it is quickly connected to the outside of the elastic water impermeable material (3). Fill the waterproofing material (4). Thus, at the lowermost end of the groove (2), a portion which does not press the elastic water impermeable material (3) is provided as a drainage port (6) communicating with the hollow portion (2 '). By doing so, the leaked water is discharged from the drainage port (6) at the lowermost end of the hollow portion (2 '), so that the outer groove (2) of the elastic water impermeable material (3) dries so that the filled rapid The water blocking material (4) quickly solidifies. At this point, as shown in FIG. 3, the groove (2)
Push the end (3 ') of the elastic impermeable material (3) into the drainage port (6) provided at the bottom end of the, and when the pushing is completed, fill the outside with the quick-set water blocking material (4') and drain it. The mouth (6) is completely closed, after which the finishing work is completed with the waterproof material (5) over the groove (2). 1 to 3 show an example of the crack (1 ') extending in the vertical direction of the construct (1) for convenience, the shape of the crack (1') is not limited.

EFFECTS OF THE INVENTION Due to the development of tools such as rotary cones, it has become possible to excavate a groove of uniform width in a concrete structure relatively easily to a certain depth. A groove with a uniform width can be excavated along cracks or junkers, and since the excavated wall surface of this groove is smooth, if an elastic impermeable material of an appropriate thickness is pushed in, leakage will not completely leak from this joint surface, and By providing a drainage port that communicates with the hollow portion provided in the back of the groove, the quick-stop water-stopping material on the front surface of the elastic water-impermeable material dries and solidifies quickly and easily. Finally, if the discharge port of the leachate is closed by the same means, the leachate collects in the hollow part and the quick-stop water-blocking material that seals this part solidifies before the water pressure rises. If the groove is finished with a waterproof material, the water leakage stop work will be completed quickly and easily.

[Brief description of drawings]

1 is a plane sectional view of a wall surface showing a state in which the present invention has been carried out, FIG. 2 is a vertical sectional view showing a state after the first working stage in the same embodiment, and FIG. 3 shows a second working stage. It is a longitudinal cross-sectional view showing a finished state. (1) …… Construction, (1 ′) …… Crack, (2) …… Groove, (2 ′) …… Hollow part, (3) …… Impermeable material, (4) …… Quick stop Water Material, (5) …… Waterproof material, (6) …… Drainage port.

Claims (1)

(57) [Claims] 1. A groove having a smooth inner surface and a uniform width is formed by expanding the crack or junker along a crack or junker generated in a concrete structure. A thick elastic water-impermeable material is pushed into the inner part of the groove leaving a small hollow part, and a drain port communicating with the hollow part is formed at the bottom of the groove. After filling the quick-stop water-stopping material on the outside of the water-permeable material and solidifying the quick-stop water-stopping material, the outlet is closed with an elastic impermeable material, and the quick-stop water-stopping material is placed on the closed drainage port. A method for preventing leakage of water from a concrete structure, characterized in that after filling and curing, the entire set of the above facilities and the quick-setting waterproof material are applied and finished with a waterproof material.