JPS5838600B2 - Mejishi Ikouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for waterproofing joints in concrete structures such as buildings, water tanks, tunnels, etc. that require waterproofing. It is a water stop.

Conventionally, various caulking materials and methods have been used to stop water, such as using caulking grooves, but sufficient water flow has not yet been achieved.

The construction method according to the present invention is characterized by having a protrusion connected to a ball head having a cavity, and a push-in part fitted into the cut groove formed therein, and the upper surface of the ball head having a cavity. A molded body made of synthetic rubber with a racket-shaped cross section, in which holes reaching the cavity are formed at appropriate intervals, is press-fitted into the gap at the opposite end of an adjacent pre-constructed concrete structure to stop water. Next, apply adhesive to the protrusions and the open surfaces of the caulking grooves, and then fill the space between them with waterproof mortar or resin mortar, and after the mortar has hardened, remove the push-in body and remove the protruding part of the molded body. scraping off the part of the joint to make it flush with the surface of the concrete structure, and abutting the ball head of the joint water-stopping elastic molded body against the wall surface of the V-shaped caulking groove of the adjacent concrete structure,
While supporting the protruding part and the push-in body, temporarily seal the ball head with quick-setting cement, then apply adhesive to the entire open surface of the protruding part and caulking groove, and further close the space between them. Waterproof mortar or resin mortar is applied so as to form a flat surface with the surface of the concrete structure, and after the mortar hardens and dries, the push-in body is removed.

The scope of application of the construction method of the present invention is waterproofing construction for the purpose of completely water-stopping any joint area where concrete expansion/contraction vibration and other stresses are concentrated.

Next, embodiments of the present invention will be described based on the drawings.

The molded body 3 shown in FIG. 5 is made of an elastic material such as synthetic rubber and has knurling 14 on its surface, and is cut to a length of 20 m for use.

Its cross section is racket-shaped, and through holes 4 are formed at appropriate intervals ζ on the upper surface of the ball head 3a in which a cavity 5 is formed so as to reach the interior of the cavity 5.

This cavity 5 may be eccentric or concentric.

A pusher body 7 is fitted into the cut groove 6 of the protrusion 3b.

1. To explain in detail the new construction work using concrete structures, 1 and 1' are new concrete structures that are adjacent to each other, and the adjacent ends that appear inside the tunnel etc. are designed to form a concave caulking groove 2. It is built.

If the ball head 3a of the molded body 3 is applied to this groove 2 from inside the tunnel, and this is press-fitted into the groove 2 together with the protrusion 3b using the pushing body 7, the elasticity of the molded body 3 (this groove 2
This molded body is brought into close contact with the wall of the tunnel, and leakage water enters the hole 5 through the through hole 4 and is introduced into a drainage ditch (not shown) at the bottom of the tunnel.

Next, after applying the adhesive 8 to the protrusion 3b and the open surface 2a of the caulking groove, the space between them is filled with waterproof mortar or resin mortar 9, and after the mortar 9 has hardened, the push-in body 7 is pulled out and the protrusion 3b is exposed. Cut out the protruding parts and rub them to form a flat surface with the concrete structures 1 and 1'.

As a result, water leaking from the joints in the tunnel peripheral wall will be completely discharged only from the drainage ditch.

After the pushing body 7 is removed, the kerf 6 absorbs any shaking of the concrete structures 1, 1' due to impact forces such as vibrations and prevents cracks in the constructed portion.

Next, we will discuss the case of repair work.

11 and 11' are existing adjacent concrete structures.

Depending on the case, curing tapes 10, 10 are pasted to an appropriate width on both sides of the joint to be repaired on the inner wall of the illustrated tunnel.

Next, the formed joint 30 is brought into contact with the void 12 of the V-groove without being supported by the protrusion 3b and the pusher 7, and the concrete structures 11, 11' are filled with quick setting cement 13. Temporarily watertight the gap.

Similar to the above, leaked water enters the hole 5 through the through hole 4 and is introduced into the discharge hole (not shown).

Next, adhesive 8 is applied to the protruding portion 3b, the hardened surface button of the quick setting cement 1-13, and the open groove surface 12a, and the same construction as described above is carried out.

As described above, the present invention makes it possible to completely prevent water leakage regardless of whether the concrete structure constituting the joint of a concrete building to be waterproofed is new or old by using a joint waterproof elastic molded body having a special shape. Moreover, since it uses a special molded body, it is easy to construct and inexpensive, making it an extremely excellent invention.

[Brief explanation of drawings]

Figures 1 to 4 are explanatory diagrams of the steps of the joint waterproofing method according to the present invention for new buildings, etc., and Figure 1 shows before press-fitting the special molded body into the caulking groove. Figure 2 is a diagram of the special joint material being press-fitted and then adhesive is applied. Figure 3 is a diagram of the waterproof mortar embedded in the adhesive L. Figure 4 is a diagram of the completed construction after the pusher is removed. , Fig. 5 shows the surface of the synthetic resin (this is the special joint formed by knurling and used in carrying out the two methods of the present invention), J = diagram of a hydroelastic water-wet molded product, Figs. 6 to 9 show the surface of the synthetic resin. FIG. 6 is an explanatory diagram of the procedure of the joint waterproofing method according to the present invention for existing buildings, etc., and FIG. Figure 7 is a diagram of the special molded body temporarily fixed with quick setting cement, Figure 8 is a diagram of the waterproof mortar applied after applying adhesive, and Figure 9 is a diagram of the completed construction after the push body is removed. 1, 1'...Concrete IJ-to construction, 3...Mountain water-stop elastic molded body, 4...
・Through hole, 5...Cavity, 6...Groove, 7
...Pushing body, 8...Adhesive, 9...
...Waterproof mortar or resin mortar, 11°11
'...Existing concrete structure, 13...
...Quick setting cement.

Claims (1)

[Claims] 1. A protruding portion 3bi- connected to a ball head 3 having a cavity 5;
and a push-in portion 7 fitted into the cut groove 6 formed therein.
an adjacent concrete formed in advance of a molded body made of synthetic rubber having a racket-shaped cross section and having through holes 4 reaching the cavity 5 of the ball head 3 formed at appropriate intervals on the upper surface of the ball head 3; Water is stopped by press-fitting into the gaps 2 at opposite ends of the structures 1 and 1', and then adhesive 8 is applied to the protrusion 3b and the caulking groove open surface 2al, and the space between them is filled with waterproof mortar or lubricant. Filled with resin mortar 9, and after the mortar hardens, the push-in body 7 is pulled out and the protruding portion 3b of the molded body 3 is removed.
Concrete structure 1 by scraping off the protruding parts of
, A water construction method for joints characterized by forming them flat with the 1' surface. 2. The ball head 3a of the joint waterproof elastic molded body 3 is brought into contact with the wall surface of the V-shaped caulking groove 12 of the adjacent concrete structure 11, 11', and while being supported by the protruding part 3b and the pushing body 7, the ball head 3a with quick setting cement 13, then apply adhesive 8 to the entire surface of the protrusion 3b and the open surface 12a of the caulking groove, and then fill the space between them with waterproof mortar or resin mortar 9 to form the concrete structure 11. , 11' to form a flat surface with the mortar, and after the mortar hardens and dries, the push-in body 7 is removed.