JPH02308044A - Waterstop for concrete block joint - Google Patents

Abstract

PURPOSE:To prevent a water leakage of a joint by fixing a strip plate-like basic body capable of plastic deformation as a base and a pair of ribs fixed to the ends thereof with a cohesive seal, and burying it into the joint of concrete blocks. CONSTITUTION:A basic body 1 is constituted of a metal sheet 11, intermediate layers 12 of a mixture of asphalt and rubber and top layers 13 of polyester nonwoven fabric, and bolt holes 16 into which the ribs 2 are mounted are bored. The ribs 2 are longer ones of soft vinyl chloride, screw holes 21 are bored lengthwise at equal intervals, they are arranged to both sides 14 and 15 of the basic body 1, and the ribs are fixed with bolts 17. After that, each border and heads of bolts 17 are coated and stuck with sheet sections 3 of a mixture of cohesive asphalt and rubber. The sheets 3 are buried into the concrete to harden, and a waterstop is fixed to a regular position. According to the constitu tion, a water leakage can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is designed to prevent water leakage by being embedded in joints of concrete blocks when placing concrete blocks for concrete structures such as tunnels, waterways, sewers, buildings, etc. This invention relates to a water stop plate for concrete block joints that prevents water damage.

[Prior Art] FIG. 8 shows a perspective view of a conventional concrete block joint water stop plate (hereinafter referred to as water stop plate) 1B in use. This water stop plate 1B consists of both side ends 14b of a base body 1b formed in a strip shape from a flexible material such as rubber or vinyl chloride.
, 15b, a pair of water stop valves 16b, 17b are integrally formed. Both ends 14b and 15b are used by being buried in one concrete block 4 and the other concrete block 5, respectively.

[Problems to be Solved by the Invention] Since the conventional water stop plate 1B described above is integrally formed of a flexible material, it may be deformed by the force acting on the water stop plate 1B during concrete pouring. be. Furthermore, since the entire structure is integrally formed from the same material, it has the disadvantage that it is not possible to satisfy both shape preservation and sealability at the same time.

An object of the present invention is to provide a water stop plate for concrete block joints that solves the above problems.

[Means for Solving the Problems] The water stop plate for concrete block joints of the present invention has a strip-like base made of a plastically deformable material, and is fixed to one side of the base and along both ends thereof. It is characterized by comprising a pair of rib portions of protrusions projecting from the one surface, and a seal portion made of an adhesive material fixed to each rib portion and the base body so as to cover the exposed surface of each rib portion. It is something.

The water stop plate for concrete block joints of the present invention is composed of a band-shaped base, a pair of ribs, and a seal portion made of an adhesive material.

The strip-shaped substrate can be composed of a thin plate-shaped core material, and an intermediate layer and a surface layer made of an adhesive material that double covers one side and the other side of the core material. The core material can be made of metal such as iron or synthetic resin. As the intermediate layer made of an adhesive material, asphalt or a mixture of asphalt and a rubber-like synthetic resin can be used.

A polyester nonwoven fabric can be used as the surface layer. This surface layer prevents the adhesive material from adhering to the hands of the worker during work, and maintains the integrity of the base together with the core material. This plastically deformable strip-shaped substrate can be rolled into a long length, which is convenient for transportation, and can also be returned to a straight shape from a rolled state.

The pair of protruding rib portions are formed separately from the base, and are each fixed on one side of the base and along both side edges as necessary, and protrude from one side of the base.

The rib portion has an outer peripheral wall surface that comes into close contact with the concrete block through a sealing portion, and has a cross-sectional shape of approximately semicircular, approximately square, or approximately trapezoidal, or both ends of the outer peripheral wall surface,
It is possible to use a device having a flat mounting wall surface fixed to the base at either end. Further, it is preferable to use a material for the rear part made of synthetic rubber or a synthetic resin material whose material itself has elasticity useful for the above-mentioned adhesion, or a hollow shape (manufactured) with increased structural elasticity.

To fix the rib portion to the base body, fixation methods such as tightening with bolts and nuts, caulking with rivets, connecting fixation with eyelets, suture fixation with thread, fixation with lines of force using clips, adhesive fixation with adhesive, etc. Means can be used. The rib portions can also form direct fixing means instead of these fixing means. That is, the rib portion is inserted into the side end of the base body and has a fit-in shape with a groove that holds the side edge, or a projection that can be inserted into and engaged with an insertion hole penetrated from one side of the base body to the other side. It is possible to use a material with a portion formed thereon. In addition, the rib portions are cut to an appropriate length, transported and stored, and when manufacturing a water stop plate, the end surfaces of multiple rib portions are brought into contact with the long base to obtain the required length. It is possible to ensure that

After the water stop plate is embedded in fresh concrete, the rib portion is securely held fixed by the solidified concrete, thereby fixing the water stop plate in a fixed position. In addition, the rib portion elastically adheres to the contact surface with concrete after hardening, and has the effect of blocking water that has entered through the joints between concrete blocks.

The sealing part seals the boundary between each rib part fixed to one side and both ends of the base body and the base body, and is made of adhesive material and is attached to each rib part and the base body so as to cover the exposed surface of each rib part. Fixed to the base. As the adhesive material, an asphalt material having a water-stopping effect, a mixture of asphalt and rubber-like synthetic resin, etc. can be used. This seal part is fixed to the base part or sealed to integrate the rib part with the base body, thereby preventing water from entering between the base body and the rib part, and preventing water from entering from one side of the base body due to water intrusion. This prevents water from entering the other side. In addition,
By covering the connecting portion of the rib portion with the sealing portion, water leakage at the connecting portion can be prevented. In addition, the seal portion can be transported and stored by being rolled into a roll in the same way as the base body.

The water stop plate of the present invention can be manufactured by easily assembling the base, the rib portion, and the seal portion at the site where water stop is required or at a work place near the site.

[Function] The water stop plate for concrete block joints of the present invention usually has the following properties:
The rib portions of the substrate are stored separately, and the rib portions are fixed on one side of the substrate and along both sides of the substrate as needed. A seal portion made of an adhesive material is fixed to each rib portion and the base body so as to cover the exposed surface of the rib portion. The water stop plate manufactured in this way has one of its slope parts buried in the ready-mixed concrete forming the first concrete block, and then the other slope part is buried in the ready-mixed concrete forming the second concrete block. will be buried in Each of the ribs prevents the water stop plate from falling when buried in concrete, and provides great resistance to water intrusion along the surface of the water stop plate after being buried and fixed in concrete. This prevents water from entering from one side of the base to the other side. In addition, the base does not deform under small forces such as when pouring concrete.
Holds a given shape.

[Effects] According to the water stop plate of the present invention, for a base made of a plastically deformable material, the tab portion may be formed separately from the base or may be formed on one side of the base or on both sides of the base as necessary. Since it is configured to be fixed at the end, only the elongated base body can be rolled up for storage and shipping. Further, when the base body is wound in a roll, since there are no rib portions on both ends of the base body, it is easy to wind the base body, and the winding diameter can be made small, so that the storage space can be small. Moreover, the transportation work becomes easier. In addition, the roll-shaped base body is transported to a water stop construction work site or a nearby work site, and then stretched into a straight line and the rib portions are fixed to both ends of the base body, and seals are attached to the rib portion and the base body. By fixing it, a water stop plate can be obtained, which can be immediately buried in concrete and used.

In addition, since the exposed surface of the rib portion is covered with a seal portion made of adhesive material, water does not seep into the water stop plate from the boundary between the fixed portion between the rib portion and the base, and water does not leak into the water stop plate. However, it is also possible to prevent water from leaking from the boundary between the fixing parts on one side of the base to the other side. Further, due to the rib portion, there is no inconvenience such as the water stop plate falling off before the concrete hardens. Furthermore, since the base body does not deform elastically, it is not easily deformed by the force of concrete pouring, and the water stop plate can be buried in a predetermined position.

[Example] The water stop plate for concrete block joints of this example is
As shown in the figure, it consists of a band-like base body 1 made of a plastically deformable material, a pair of rib parts 2 of protrusions, and a seal part 3 made of an adhesive material.

The base 1 includes a core material 11 made of a long metal thin plate, an intermediate layer 12 made of a mixture of asphalt and rubber coated on the outer circumference of the core material 11, and a core material 12 made of a mixture of asphalt and rubber coated on the outer circumferential surface of the intermediate layer 12. It consists of a surface layer 13 made of polyester nonwoven fabric. The base body 1 has bolt mounting holes 16 (one shown in FIG. 1) formed through the ends 14, 15 at approximately equal intervals in the length direction. This base body 1 can be wound up into a roll in the form of a long sheet, and then stored, shipped, and transported.

The rib portion 2 is made of soft vinyl chloride and has a substantially horizontally elongated rectangular cross-sectional shape. This rib portion 2 has a large number of screw holes 21 (first
(one shown in the figure). The rib portion 2 of this protrusion is
After the roll-shaped base 1 is transported to the water stop construction site and stretched into a straight line, both ends 1 of one side 1a of the base 1 are stretched.
4.15, the bolts 17 inserted into the bolt mounting holes 16 from the other surface 10a side of the base body 1 are screwed into the screw holes 21, thereby fixing the bolts 17 to the one surface 1a.
A pair of protrusions are formed that protrude more.

The seal portion 3 is a sheet made of a mixture of asphalt and rubber with adhesive properties, and is attached to the side edges 14 and 15 of the base body 1.
For each rib portion 2 fixed to It is pasted and fixed so as to cover the boundary part, and the covered surface is reliably sealed to prevent water from entering. In addition,
The material of the seal portion 3 is the same as that of the intermediate layer 12 of the base body 1.

As described above, the base body 1 and the rib portion 2 are formed separately,
The water stop plate 1A, which has a configuration in which the rib portion 2 is fixed along both side edges 14 and 15 of the base 1 on one side of the base 1 as necessary, is manufactured in advance in a strip shape in a factory to which the rib portion 2 is not fixed. Only the base body 1 thus prepared can be rolled into a roll, stored and shipped, and transported to a water stop construction work site, thereby improving the work efficiency. The rib portions 2.2 of the base body 1 are each fixed by fixing bolts 17 at fixed positions on one surface 1a side of the base body 1 and along both side edges 14.15 at a water stop construction work site for a concrete structure. . Roughly, the exposed surface 20 of the rib portion 2 protrudes from the one surface 1a of the base 1, the boundary between the exposed direction 20 and the one surface 1a of the base 1, and the boundary between the head of the fixing bolt 17 and the other surface 10a of the base. The water stop plate 1A is assembled with the boundary portion sealed and enclosed by the seal portion 3. The water stop plate 1A is placed at a predetermined position in a concrete casting space previously formed by circuit formwork members during concrete casting. After this, ready-mixed concrete is placed on one side 1a of the water stop plate 1A, and both rib portions 2 are placed as shown by the two-dot chain line in FIG.
．． 2 are the first concrete block 4 and the second concrete block, respectively.
It will be buried in concrete block 5. This water stop plate 1A
In this case, each rib part 2.2 on the side 1a of the base 1 and the surface layer 13 between each rib part 2.2 are in close contact with both concrete blocks 4.5 after solidification, and water does not enter through the joint 6. It can also stop water. This water is on one side of the water stop plate 1A.
It does not leak from the a side to the other surface 10a side. Further, the water stop plate 1A is provided with a seal portion 3 at the boundary between the exposed surface 20 of the rib portion 2 and the surface direction 20 and the one surface 1a of the base 1, and the fixing bolt 1.
Since the boundary between the head of the substrate 7 and the other surface 10a of the base is sealed and enclosed, water does not enter from the fixed portion of the rib portion 2 of the substrate 1.

Since the water stop plate 1A of this embodiment is made of a plastically deformable material, it is not deformed by the force applied during concrete pouring, so it can maintain a predetermined shape. In addition, since one side of the base is fixed and the block part 2 is covered with an adhesive seal part 3, the cocrete block 4 is solidified.
．． The state of close contact with 5 is maintained well. Also, this water stop plate 1
Since the base 1 of A is formed with the surface layer 13 made of polyester nonwoven fabric, it is possible to prevent the adhesive intermediate layer 12 from adhering to the operator's hands, etc., and the work of winding only the base 1 into a roll is possible. , transportation work, work for fixing the rib portion 2 to the base body 1 , arrangement work accompanying concrete pouring work, etc., are easy to carry out.

Note that modifications of the rib portion 2 of the water stop plate 1A and its fixing means are shown in FIGS. 2 to 7. Here, the rib portion 2 in FIG. 2 has a hollow portion 23 formed in the cross-sectional shape of the above embodiment, and fixed mounting portions 24 and 24 protruding from both sides of the bottom surface. In addition, mounting holes for circuits coaxially passing through one of the fixed mounting portions 24, 24 and the side end portion 14 of the base 1 are formed at approximately equal intervals along the longitudinal direction. Then, a nut 18b is inserted into the bolt 18a inserted into the mounting hole.
One of the fixed attachment portions 24.24 is fixed to the side end portion 14 of the base portion 1 by screwing. The rib portion 2 in FIG. 3 has the same shape as that shown in FIG. It is fixed to the end portion 14. The rib portion 2 in FIG. 4 has the same shape as the rib portion 2 shown in FIG. 2, and one of the fixed attachment portions 24, 24 is fixed by holding the side end portion 14 of the base portion 1 with a clip 18d. The rib portion 2 shown in FIG. 5 has the same shape as the rib portion 2 shown in FIG.
Has 4. The base 1 also includes the mounting and fixing parts 24 and 24.
horizontally oblong mounting holes 19 arranged in two rows at intervals slightly narrower than the intervals of
．． 19 is formed. The two mounting fixing parts 24.24 of the rib part 2 are inserted and penetrated into the mounting hole 19.19 while being pressed in the direction toward each other, and the two mounting fixing parts 24.24 are mutually inserted. It is fixed by using a force that acts in a direction that moves away from the object. The rib portion 2 shown in FIG. 6 is formed so that one of the mounting and fixing portions 24 of the rib portion 2 shown in FIG. A pinching portion 25 with
The side end portion 14 of the base portion 1 is held and directly fixed by the biasing action of the clamping portion 25. The rib portion 2 shown in FIG. 7 is spaced from the sandwiching portion 25 of the rib portion 2 shown in FIG. 6 by approximately the same thickness as the base body 1. As shown in FIG. Figure 3: Glide section 2
is the one with the gap shown in Figure 2, and the stapler 20
Attach and fix the rib to the side end portion 14 of the base body 1 by driving the fixing portion 24.
24a are connected and fixed.

It should be noted that a seal portion of the circuit is attached to the peripheral wall on the fixing surface of the rib portion 2 and the base body 1 shown in FIGS. 2 to 7, or on the fixing gap between the two to be sealed in a watertight state.

[Brief explanation of the drawing]

FIG. 1 is an enlarged, cross-sectional perspective view of a main part of a concrete block joint water stop plate according to an embodiment of the present invention. 2 to 7 are partially cutaway perspective views showing a modified example of the rib portion and a modified example of the means for fixing the rib portion to the base body in FIG. 1, respectively. FIG. 8 is a perspective view showing a conventional water stop plate in use. 1...Base 11...Core material made of a thin metal plate 12...Intermediate layer 13 made of a mixture of asphalt and rubber...Intermediate layers 14 and 15 made of polyester nonwoven fabric...Side end portion

Claims (1)

[Claims] (1) A band-shaped base made of a plastically deformable material, a pair of protruding rib portions protruding from the one surface fixed on one side of the base and along both ends thereof, and each of the rib portions. 1. A water stop plate for concrete block joints, characterized in that the water stop plate is comprised of each of the rib portions and a seal portion made of an adhesive material fixed to the base so as to cover the exposed surface of the concrete block joint.