JPS60119840A - Joint waterproof construction method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides concrete construction joints for civil engineering and architecture;
This method was used to completely shut off water in construction joints, something that could not be achieved using conventional materials and construction methods.

Conventional methods for waterproofing this type of ground have included injecting waterproof mortar and using elastic water-stopping materials, but these methods have weak bonding strength with the concrete structure, making it difficult to achieve complete water-stopping. I couldn't do it.

The present invention solves the drawbacks of conventional construction methods and completes a method for completely sealing water by tightly press-fixing a water-stopping material to the joint.

The joint waterproofing construction method according to the present invention will be explained in detail below based on the drawings.

Figure 1 shows a cross-sectional view of a rubber molded body, which is a water-stopping material to be attached to joints.A highly elastic rubber tube (2) is covered with water-swellable rubber (3), and the resin foam is hollowed out during construction (1). The structure is such that injection holes (4) for injection are provided at appropriate intervals, and the injection holes can be tightly plugged after injection.

Next, as shown in Fig. 2, a rubber molded body having the structure shown in Fig. 1 is attached to the joint (6) of the pour joint or construction joint formed by the concrete structure (5) (5'). (a)) The resin foam is injected into the cavity (1) through the injection hole (4) and foamed to expand the rubber molded product and fixed to the joint (6) by pressure, and then the surface portion is covered with waterproof mortar or resin mortar. (Fig. 2(b)).

That is, this construction method takes the same form for both new construction and repair work, and the construction method steps are as follows.

Cut the rubber molded body with the cross section shown in Figure 1 according to the length of the joint, and if the joint is continuous, glue both ends of the rubber molded body with strong adhesive, and if the joint is discontinuous, both ends The cut surface is closed using a rubber plug or the like and attached to the joint as shown in FIG.

Next, a resin foam is injected through the injection hole, and after injection, the injection hole is tightly plugged and foamed.

The joint waterproofing method according to the present invention is completed by flattening the surface part with waterproof mortar or resin mortar after the rubber molded body is completely fixed in the joint by expansion due to foaming. By injecting and foaming the resin foam, the foaming pressure expands the rubber molded body and completely presses and fixes it in the joint gap, thereby stopping water.

Next, the coated surface rubber is a water-swellable rubber that swells when it comes into contact with water for a certain period of time, and maintains its swollen state while in contact with water, filling minute voids within the joints. In combination with the above-mentioned effects, it achieves perfect water stoppage.

Furthermore, since the rubber molded body is made of highly elastic rubber, it is possible to completely follow the expansion/contraction, vibration, and other movements of the thin concrete structure.

This water-stopping construction method has many distinctive effects, such as being able to be applied even in wet conditions, unlike many other resin-based water-stopping materials.

Also, since this water stop construction method uses a regular shaped rubber molding as a material, it does not require much skill compared to methods that use irregularly shaped materials, and is therefore easier to construct and less expensive. be.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an embodiment of a rubber molded body used in the joint waterproofing method according to the present invention. “ Figure 2 (Al is the 2nd cross-sectional view of the state where it is attached to the joint.
Figure (bl is a cross-sectional view after filling with foamed resin and finishing. Figure 3 is a cross-sectional view of the end of the rubber molded body and the plugged state. In the figure (1)... ”) ---
−−−−−−−−−−Strong elastic rubber tube (3) −−−−
−−−−−−−−−− Mono-water swellable rubber (4)−・・−・
−・−・Injection hole (5) (5′)−・−Concrete structure (6) −
−−−−−1・・−・−・−・Joint (7) −−−−−
-----------1 Waterproof mortar or resin mortar (8
) −1−−−−・−−−1−−−Resin foam (9)
−−−−−−−−−−−−−One stopper patent applicant Osaka
Co., Ltd. Agent Patent Attorney Elementary J1 Shiomi Figure 1 Figure 2 Garden (a) Figure 2M (b) FFI Figure 3 Procedural Amendment (Method) % Formula % 1. Indication of the case 1982 Patent layer Car No. 228914 relationship with
Patent Applicant 4, Agent 542 Telephone (06) 262-0500 Address Junkei Building, 2-2-28 Minamisenba, Minami-ku, Osaka Name Patent Attorney (8290) Ogawa Omi 15. Date of amendment order

Claims (1)

[Claims] +11 Strong elastic rubber (
2) is coated with water-swellable rubber (3) and equipped with a water-stopping material made of a rubber molding with injection holes (4) that can be sealed tightly at appropriate intervals, and the resin foam is poured through the injection holes (4). By injecting it into the cavity and foaming it, the rubber formed body expands and the joints (
6) A joint waterproofing construction method characterized by fixing the joints by pressure and then finishing the surface portion flat with waterproof mortar or resin mortar. (2) The joint waterproofing construction method according to claim 1, characterized in that the rubber molded body has the length of the joint, both ends of the continuous joint are adhered with an adhesive, and both ends are closed with a rubber plug or the like. .