JP3895107B2 - Sealed concrete crack-induced joint material for civil engineering and its usage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a crack-induced joint defect material part for controlling harmful cracks occurring in civil engineering concrete structures, and in particular, a waterproofing concrete crack-inducing joint material for civil engineering when water-stopping performance is required. It relates to the method of use.
[0002]
[Prior art]
When installing crack-inducing joints in civil engineering concrete structures, place the joints in the form of a trapezoidal cross section made of wood or resin at the position where the joints in the formwork are preliminarily placed, and then cast the concrete to break the concrete. Let me.
[0003]
[Problems to be solved by the invention]
Those described in the prior art have the following problems.
After removing the mold, remove the trapezoidal joint rod from the concrete frame, and fill the missing part with sealing material, resin mortar, etc., but the missing filler will fall off in a few years, and it will be waterproof and waterproof performance. There was no reliability.
In addition, there are buried joint materials having a certain waterproof performance, but there was anxiety about the reliability of water stoppage when immersed in water. In both cases, it was necessary to perform a separate water treatment, which was a very time-consuming work.
[0004]
The present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide the following.
Conventionally, not only the problem of the filler joints falling and repairing in several years, but also the deterioration of the waterproof performance due to the aging of the filler material was considered.
In addition, there are induction joint materials having a certain waterproof performance. However, when water-stopping performance is more demanded such as when immersed in water, it has been necessary to take a trouble of performing water-stopping construction separately.
In other words, in the past, when civil engineering structures were provided with cracks to induce cracks, general waterproof performance was considered, but there were no workability or good means for parts that were immersed in water. I had to take the trouble of constructing water.
Therefore, the present invention is intended to provide a waterproof resin crack-inducing joint material having good weatherability that does not fall off and is flexible and has good workability.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is as follows.
1st invention is comprised from the water-stop adjustment deficient material 2 and the joint material main body 3,
A. The water-stopping adjustment defect material 2 is made of a flexible butyl rubber having a good adhesion to an iron plate or concrete and having a water-stopping effect. In the center of the adjustment defect material body 2A in the left-right direction, the adjustment defect material body 2A is composed of a core material 2B made of a vertically long iron plate disposed in the longitudinal direction of the adjustment defect material body 2A.
B. The joint material body 3 includes a joint body 3A, a joint prevention bolt 3B, a washer 3C, and a wing nut 3D.
a. The joint body 3A is made of a hard resin as a raw material, and is connected to the left and right side surfaces 3A1 and 3A1 that are in contact with the front portions of the left and right side surfaces of the waterstop adjustment deficient material 2 from the outside, and the outer ends connected to the rear ends of the left and right side surfaces 3A1 and 3A1. Bent side 3A2, 3A2 and spring part 3A3 extending in the left-right direction between the ends of the left and right side faces 3A1, 3A1, and the spring part 3A3 is inserted into the spring part 3A3 with a predetermined interval in the up-down direction. A hole 3A31 is opened, and a front vertical belt 3A4 configured in a vertically long belt shape using a special soft resin that is flexible and excellent in weather resistance is integrally attached to the front surface of the spring portion 3A3 of the joint body 3A. The front vertical belt 3A4 is provided with a co-rotation prevention bolt penetration hole 3A41 corresponding to the co-rotation prevention bolt penetration hole 3A31 in the spring portion 3A3.
b. The co-rotation prevention bolt 3B includes a bolt body 3B1 made of synthetic resin, and a wedge-shaped vertical frame 3B2 connected to the rear end of the bolt body 3B1 in a substantially T-shape in a state perpendicular to the longitudinal direction of the bolt body. The wedge-shaped vertical frame is configured to be fitted in a V-shaped fold forming the spring portion 3A3 when viewed from above, and the bolt body 3B1 has a fold at a predetermined position. 3B3 is engraved,
c. The washer 3C and the wing nut 3D are configured to be detachably attached to the front portion from the engraved portion of the crease 3B3 in the bolt body 3B1.
C. The front part of the water-stopping adjustment deficient material 2 is fitted and fixed in the left and right side surfaces 3A1 and 3A1 of the joint body 3A so that the front end face of the water-stopping adjustment deficient material 2 is in contact with the spring portion 3A3. It is a water concrete crack-inducing joint material.
[0006]
The first invention can be configured as follows.
On the outer surface of the left and right side surfaces 3A1 and 3A1 in the joint body 3A, an uneven surface formed by a number of vertical bars 3A11 is formed.
[0007]
2nd invention arrange | positions the panel 5 for the formwork which attached the water-stopping concrete crack induction joint material for civil engineering of 1st invention, and then casts the concrete 5, and after placing, a washer and a wing nut are removed. This is a method of using a waterproofing concrete crack-inducing joint material for civil engineering, which is configured to remove the form panel 4 and then smash the portion of the joint prevention bolt 3B protruding from the joint body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples with reference to the drawings.
This invention consists of the usage method of the waterproofing concrete crack induction joint material for civil engineering of 1st invention, and the waterproofing concrete crack induction joint material for civil engineering of 2nd invention.
Reference numeral 1 denotes a concrete crack-inducing joint material according to the first aspect of the present invention, which is composed of a water stoppage deficient material 2 and a joint material body 3.
[0009]
A. The water-stopping adjustment defect material 2 is made of a flexible butyl rubber having a good adhesion to an iron plate or concrete and having a water-stopping effect. The core 2B is formed of a vertically long iron plate disposed in the longitudinal direction of the adjustment defect material body 2A at the center in the left-right direction of the adjustment defect material body 2A.
[0010]
B. The joint material main body 3 includes a joint main body 3A, a co-rotation prevention bolt 3B, a washer 3C, and a wing nut 3D.
a. The joint body 3A is made of a hard resin as a raw material, and is connected to the left and right side surfaces 3A1 and 3A1 that are in contact with the front portions of the left and right side surfaces of the waterstop adjustment deficient material 2 from the outside, and the outer ends connected to the rear ends of the left and right side surfaces 3A1 and 3A1. Bending side 3A2, 3A2 and a spring portion 3A3 extending between the left and right side surfaces 3A1, 3A1 extending in the left-right direction. The spring portion 3A3 is folded in a V-shaped cross section and an inverted V-shape. The bending is continuously performed, and the spring portion 3A3 is provided with holes 3A31 for penetration prevention bolts at predetermined intervals in the vertical direction.
In addition, a front vertical belt 3A4 configured in a vertically long belt shape using a special soft resin that is flexible and excellent in weather resistance is integrally attached to the front surface of the spring portion 3A3 of the joint body 3A.
The front vertical belt 3A4 is provided with a co-rotation prevention bolt penetration hole 3A41 corresponding to the co-rotation prevention bolt penetration hole 3A31 in the spring portion 3A3.
Accordingly, the front vertical belt 3A4 responds to the expansion and contraction of the spring portion.
[0011]
The joint body 3A can be configured as follows.
That is, an uneven surface formed by a number of vertical bars 3A11 is formed on the outer surfaces of the left and right side surfaces 3A1 and 3A1 of the joint body 3A.
This uneven surface can improve the adhesion to concrete.
b. The co-rotation prevention bolt 3B includes a bolt body 3B1 made of synthetic resin, and a wedge-shaped vertical frame 3B2 connected to the rear end of the bolt body 3B1 in a substantially T-shape in a state perpendicular to the longitudinal direction of the bolt body. The wedge-shaped vertical frame is configured to be fitted in a V-shaped fold forming the spring portion 3A3 when viewed from above, and the bolt main body 3B1 has a predetermined position (a joint main body and The crease 3B3 is engraved with the same position).
c. The washer 3C and the wing nut 3D are configured to be detachably attached to the front portion from the engraved portion of the crease 3B3 in the bolt body 3B1 fitted to the joint body 3A.
C. The front portion of the water-stopping adjustment deficient material 2 is fitted and fixed in the left and right side surfaces 3A1 and 3A1 of the joint body 3A so that the front end surface of the water-stopping adjustment deficient material 2 is in contact with the spring portion 3A3.
[0012]
The formwork panel 4 for mounting the water-stopping concrete crack-inducing joint material for civil engineering is a well-known one configured in a front square shape, but corresponds to the joint rotation preventing bolt penetration hole 3A31 of the spring portion 3A3 in the joint body 3A. The common rotation prevention bolt penetration hole 4A is opened.
[0013]
The usage method of the still water concrete crack induction joint material for civil engineering of 2nd invention is demonstrated.
First, co-rotation prevention bolt penetration holes 4A are formed in the formwork panel 4 at predetermined intervals, and the water-stopping deficient material 2 is pre-corolled with a crease in a predetermined position (position flush with the joint body). The joint body 3A fixed at a predetermined interval by the prevention bolt 3B is fixed to the formwork panel by a wing nut 3D fastened by a washer 3C, and the concrete 5 is placed.
After laying, remove the washer and wing nut, then remove the mold panel 4 and tap the part of the joint prevention bolt 3B that protrudes from the joint body. Since it is flush with the main body, it is finished as it is.
[0014]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be expected.
1. The joint material main body 3 can follow the shrinkage of the concrete and not only has a certain waterproof performance, but also can exhibit a sufficient waterproof performance due to the effect of the water-stop adjustment deficient material 2.
2. It can be set at the same time as the panel set for the formwork.
3. At the time of removing the mold panel, almost all the work can be completed only by the work of folding the bolt body in the joint prevention bolt.
4). Defect rate can be adjusted with water-stopping defect material.
5). Since it is configured to fix the water-stopping deficient material and the joint material main body together with the joint prevention bolt, it can be attached to any formwork panel such as metal foam and resin panel.
6). There is no variation in the finish by the contractor, and water stopping performance can be obtained without dropping.
7). In addition, it can be manufactured at a low cost, has a small number of parts, and is easy to assemble and economical.
[Brief description of the drawings]
FIG. 1 is a perspective view of a state where a waterproofing concrete crack-inducing joint material for civil engineering is attached to a formwork panel.
FIG. 2 is an enlarged view of the main part of the above.
FIG. 3 is a cross-sectional view taken along line AA.
FIG. 4 is a sectional view taken along line BB.
FIG. 5 is an exploded perspective view in which a waterproof concrete crack-inducing joint material for civil engineering is attached to a formwork panel.
FIG. 6 is a view taken along line CC.
FIG. 7 is a sectional view taken along line DD.
FIG. 8 is a sectional view taken along line EE.
FIG. 9 is a cross-sectional view taken along line FF.
FIG. 10 is a sectional view taken along line GG.
FIG. 11 is a perspective view showing a state in which a waterproofing concrete crack-inducing joint material for civil engineering is embedded in a civil engineering concrete structure when the panel for mold is removed.
FIG. 12 is an enlarged view of the main part of the above.
13 is an enlarged cross-sectional view of the main part in FIG.
FIG. 14 is a plan view of the joint rotation prevention bolt.
FIG. 15 is a perspective view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waterproofing concrete crack induction joint material for civil engineering 2 Water stoppage deficient material 3 Joint material main body 4 Formwork panel 5 Concrete

Claims (3)

It consists of water-stopping deficient material (2) and joint material body (3),
The water-stopping deficient material (2) is made of flexible butyl rubber that has good adhesion to steel plates and concrete and has a water-stopping effect. (2A) and a core material (2B) made of a vertically long iron plate disposed in the longitudinal direction of the adjustment defect material body (2A) at the center in the left-right direction of the adjustment defect material body (2A),
The joint material body (3) is composed of a joint body (3A), a co-rotation prevention bolt (3B), a washer (3C), and a wing nut (3D). The joint body (3A) is made of hard resin. Folded outwardly connected to the left and right side surfaces (3A1, 3A1) and the rear ends of the left and right side surfaces (3A1, 3A1), which are in contact with the front portions of the left and right side surfaces of the water-stopping defect material (2) It consists of a bent side (3A2, 3A2) that is bent and a spring part (3A3) that expands and contracts in the left-right direction between the ends of the left and right side surfaces (3A1, 3A1). Opening hole (3A31) for preventing rotation of bolts is opened, and the front vertical belt (3A4) is made of a special soft resin that is flexible and has excellent weather resistance. The front vertical belt (3A4) is a spring for the joint body (3A). Partly attached to the front of the part (3A3) The front vertical belt (3A4) has a co-rotation prevention bolt penetration hole (3A41) corresponding to the co-rotation prevention bolt penetration hole (3A31) in the spring portion (3A3). 3B) is a bolt main body (3B1) made of synthetic resin, and a wedge-shaped vertical frame connected to the rear end of the bolt main body (3B1) in a substantially T shape in a state orthogonal to the longitudinal direction of the bolt main body. (3B2), and the wedge-shaped vertical frame is configured to be fitted into a V-shaped fold forming the spring portion (3A3) when viewed from above, and to the bolt body (3B1). The crease (3B3) is engraved at a predetermined position, and the washer (3C) and the wing nut (3D) are detachably attached to the front part of the crease (3B3) in the bolt body (3B1). Installing Cormorants are configured,
The front portion of the water-stopping adjustment deficient material (2) is in a state where the front end surface of the water-stopping adjustment deficient material (2) is in contact with the spring portion (3A3) in the left and right side surfaces (3A1, 3A1) of the joint body (3A). Sealed concrete crack-inducing joint material for civil engineering, characterized by being fitted and fixed with. The waterproofing concrete crack inducing joint material for civil engineering according to claim 1, wherein the outer surface of the left and right side surfaces (3A1, 3A1) of the joint body (3A) is formed with uneven surfaces formed by a number of vertical bars (3A11). . After arranging the formwork panel (4) to which the waterproofing concrete crack-inducing joint material for civil engineering according to claim 1 or 2 is mounted, the concrete (5) is placed, and after the placement, a washer, The water stop for civil engineering, which is constructed so that the formwork panel (4) is removed after the wing nut is removed, and the part protruding from the joint body of the joint rotation prevention bolt (3B) is struck. How to use concrete crack-induced joint material.

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