JPH04136362A - Joint member for support concrete of floor face of building and construction method of joint - Google Patents

Abstract

PURPOSE:To make it easy to wrap and transport joint members for support concrete by connecting molded expandable joint members together by means of hinges so as to arrange the joint members into the shape of a rectangular frame, and enabling the joint member on each side to be folded in the horizontal direction while in its standing position. CONSTITUTION:Molded expandable joint members 1 are each' formed by a joint member main body 2 made of synthetic resin foam and a hard cap 3 fitted over the joint main body 2 and an adhesive layer 4 made of butyl rubber and the like is stuck to each of recessed portions formed in both side faces of the cap 3. The length of each joint member 1 is fixed in the range of about 2 to 10m and the joint members 1 are connected together by a hinge connecting piece 14 to form connected bodies 15 of joint members and the connected bodies 15 are assembled into a rectangular frame. The joint member 1 on each side can be folded in the horizontal direction while in its standing position and wrapped and the joint members 1 are assembled into a rectangular frame and arranged into a square on the floor surface and then concrete is placed. Construction work for joints at a site is thereby facilitated.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides a method for placing retainer concrete before placing retainer concrete on a waterproof layer on the roof or other floor surface of a building. This is a joint material used for joint construction, and a method for constructing the joint.

[Conventional technology]

There is a construction method in which a waterproof layer is formed on the floor of a building, and a holding concrete layer is formed on top of this waterproof layer, and a joint material is placed on the waterproof layer before forming the holding concrete layer.
They are arranged and fixed in a square pattern vertically and horizontally, maintaining the required spacing.

[Invention tries to solve! ! Title]

Conventionally, before pouring concrete onto the waterproof layer of a building's floor, joint material is placed in grids vertically and horizontally, and when the concrete is poured, joint material is placed to prevent the joint material from falling over or moving. Mortar dumplings are placed on both sides of the joint to support the joint material, but this work is done by a plasterer.
In addition, it is necessary to wait for the mortar lumps to harden before pouring the retaining concrete, and furthermore, after pouring the retaining concrete, the work of leveling the poured concrete so that it matches the top edge of the joint material is to be done by a plasterer. , the wages paid to plasterers, including the time they spend on their machines, will increase.

This invention is an attempt to solve the above-mentioned problems, and its purpose is to omit the step of filling mortar into the joint material placed before pouring the retaining concrete, and to immediately pour the retaining concrete. Moreover, it is an object of the present invention to provide a joint material capable of leveling and leveling poured concrete, and a joint construction method.

[Means for solving the problem] The above r! In order to solve this problem, one of the inventions is to use a molded expandable joint material consisting of a joint material body made of synthetic resin foam and a cap that fits into the joint material body, each piece having a certain length. The joint material on each side can be folded horizontally in an upright position by connecting them with hinges to form a rectangular frame shape. Arranged in a frame shape and in a square and staggered pattern,
This is a joint construction method in which the structure is supported by legs fixed to the floor.

[Effect]

The joint material of the present invention can be formed into a square frame shape by connecting the joint materials on each side with hinges, and can be folded horizontally and packed in an upright position. The square frame shape is arranged in a square pattern (staggered pattern), and the four corners have cross legs with ``cross'' groove walls glued to the floor surface with adhesive. By arranging and supporting intermediate legs with upright "-" shaped groove walls in the center of the joint material on the sides, it is possible to pour concrete immediately after installing the joint material.

〔Example〕

The drawings show an embodiment of the present invention, and FIG. 1 shows a well-known molded expansion joint material 1 for pressing concrete on the floor of a building, and this joint material has a joint material main body 2 made of synthetic resin foam, and a joint material 1 made of a synthetic resin foam. It consists of a hard cap 3 made of vinyl chloride resin, polyethylene, etc. that is fitted onto the material body 2, and adhesive N4 made of, for example, non-vulcanized butyl rubber, which has adhesive properties with pressing concrete, is installed in the concave portions on both sides of the cap 30. It is glued.

5 is a plurality of slits formed in the lower half of the joint material main body 2 and cut facing each other from both sides, and the lower layer is cut from the lowest slit in accordance with the gradient of the floor surface. They are to be cut and removed in sequence.

Figure 2 (a) shows how the joint material 1 is glued and fixed to the floor surface at the intersections of the vertical and horizontal joint materials when the joint material 1 is arranged in a square pattern vertically and horizontally with the required spacing maintained on the waterproof layer of the floor surface. The cross legs 6 support the intersections of the joint materials, and FIG. 9. The intermediate leg 7 is placed on the base plate 10 with "-"
The letter-shaped groove walls 11 are respectively erected, and the base plate portions 8,
An adhesive layer 12 and a release paper 13 are laminated in this order on the lower surface of the film 10.

These cross legs 6 as well as intermediate legs 7 are also known.

In this invention, the joint material 1 has a required length, for example, a constant length in the range of 2 to 10 m, as shown in FIG. In the morning, it is assembled into a rectangular frame shape as a joint joint material 15 connected by connecting pieces 14 consisting of connecting pieces 14, etc., but during the transportation process, the connecting pieces 14a on one end side are folded and packed with the other end separated, and the square frame is assembled on site. Make it into shape.

The joint material connection body 15a in FIG. 4 is the joint material connection body 1 in FIG.
The joint material l in No. 5 is divided into two divided bodies a.

FIG. 5 shows the hinged joint material 1a, and FIG. 5 shows an example of the joint material la folded for packaging.

FIG. 6 shows joint joints 15 shown in FIG. 3 sheathed in a rectangular frame shape, arranged on the floor in a grid pattern and in a staggered manner, and the hinge joints of the joint materials 1 on each side are crossed. It is supported by legs 6, and the diagonal connecting portions of the joint material connections at staggered diagonal positions are fitted and supported by the diagonal edges of the cross legs 6.

Figure 7 is an enlarged view of the circled part A in Figure 6.
Although not shown in FIG. 6, I6 is a rod made of synthetic resin foam, etc., which is filled in the hole J7 formed at the center of the cross-shaped groove in the cross leg 6.

〔effect〕

By using this invention as a joint material for pressing concrete on the floor of a building, the following effects can be obtained.

(1) Molded expandable joint material consisting of a joint material body made of synthetic resin foam and a cap, each piece having a certain length 4
or the above four joint materials can be divided into an even-numbered fixed number of joint materials, and these joint materials can be connected by hinges to form a square frame shape, and the joint materials on each side can be arranged horizontally in an upright position. Since it is foldable, it is easy to pack and transport by folding it.

(2) Arrange the above-mentioned joint material connections in a square frame shape in a square shape, fit the four corners of the square frame shape into the cross-shaped grooves of the cross legs, and place the joints on each side at the appropriate center. middle leg
Since the cross legs and intermediate legs are supported in the "-"-shaped grooves and fixed to the floor surface with an adhesive layer, it is easy to construct the joints on site, and the mortar dumplings seen in conventional joint construction can be avoided. There is no need for the hassle of mounding and supporting the joint material.
In addition, there was no need for the plasterer to wait for the mortar balls to harden, which was the case with conventional joint construction methods, and the concrete was immediately poured into the joint corner frames arranged in a square pattern, and the plaster was poured. Concrete can be leveled and finished immediately.

[Brief explanation of the drawing]

The drawings show an embodiment of the joint material for holding down concrete for building floors and the joint construction method according to the present invention, FIG. 1 is a perspective view of an example of the joint material used in the present invention, and FIG. 2 (A) (
b) is a perspective view of the cross leg and intermediate leg for fixing the joint material to the floor surface; FIG. 3; FIG. 4 is a plan view of the joint material connection body according to the present invention; Figure 6 is a plan view of the joint material joints in a state that is half-folded for packaging. Figure 6 shows the joint joint material joints in a square frame shape and placed on the floor in a square pattern (staggered shape).
FIG. 7 is an enlarged plan view showing the details of the circled portion in FIG. 6. 1...... Molded expansion joint material, 2...
...The main body of the joint material. 3・・・・・・・・・Cap, 6・・・・・・・・・
Cross leg, 7...Middle leg, 9...
・・・・・・R-shaped groove wall of cross leg,】1...
..."-" shaped groove wall of middle leg, 12...
・Adhesive layer of cross leg and intermediate leg + 14+ 14a
......Hinge connection piece, 15.15a...
・・・・・・Glut material connection body. Engraving of the drawing, Figure 2

Claims (3)

[Claims] (1) A molded expandable joint material consisting of a synthetic resin foam joint material body and a cap that fits onto the joint material body, each having a certain length, is connected by a hinge to form a joint material joint body. A joint material for pressing concrete on the floor of a building, which can be formed into a square frame shape, and each side joint part can be folded horizontally in an upright position. (2) The length of the joints on each side of the joint joint, which can be made into a square frame shape, is set to a predetermined constant length, and the joints are divided into a certain even number of pieces, and each divided joint is divided into adjacent joints. The joint material according to claim 1, which is hingedly connected to the joint material. (3) A molded expandable joint material consisting of a joint material body made of synthetic resin foam and a cap fitted to the joint material body, each having a required length, is connected by a hinge to form a joint joint material into a rectangular frame shape, and the floor The four corners of each square frame are arranged in a square pattern on the surface and are fitted and supported by cross legs which are arranged on the floor and have a "cross" shaped groove wall erected on the upper surface of the base plate. Construction of concrete joints on the floor of a building, characterized by adhesively fixing the "one"-shaped groove wall that fits and supports the joint material on each side at the appropriate center to the floor together with the upright intermediate legs. Law.