JPH0581701B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention provides a method for preventing the thermal expansion of concrete when pouring concrete on the surface of a building on which a plate-shaped heat insulating material is installed. Or, it relates to a method for attaching a joint material attached to absorb heat shrinkage.

Technical background of the invention and its problems For example, when forming a concrete floor on the roof of a building, as shown in FIG. 8, a waterproof layer 2 is formed on the roof slab 1; A plurality of plate-shaped heat insulating materials 3 are laid in a plane on top of the plate-shaped heat insulating materials 3, and holding concrete 4 is placed on the surface of the plate-shaped heat insulating materials 3. Then, before pouring the holding concrete 4 onto the surface of the plate-shaped heat insulating material 3 or before installing the concrete plate 4, rod-shaped joint materials 5 are installed on the surface of the plate-shaped heat insulating material 3 at appropriate intervals. . The joint material 5 is formed of an elastic material, and when the holding concrete 4 placed between the joint materials 5 thermally expands or contracts due to changes in the surrounding environment, it absorbs these strains and becomes the holding concrete 4. This is to prevent cracks from occurring in the concrete 4.

However, since such joint material 5 is attached to the surface of plate-shaped heat insulating material 3 one by one using adhesive or mortar or fixing pins while positioning one by one before placing concrete 4 for holding down, ,
The problem was that the workability was extremely poor. In particular, when the joint material 5 is fixed to the surface of the plate-shaped heat insulating material 3 with adhesive or the like, the joint material 5 is likely to peel off.
There was a risk that the joint material 5 would be washed away by the concrete during the pouring of the holding concrete 4. In addition, in order to prevent the concrete placement hose from colliding with the joint material 5 and causing the joint material 5 to peel off from the plate-shaped insulation material 3, a bridge for the hose is provided, and a worker's foot collides with the joint material 5. There was a problem that I had to be careful not to do this.

In order to solve these problems, it has been proposed that the joint material 5 and the plate-shaped heat insulating material 3 are integrally molded. According to such a joint material, there is no need to position and fix the joint material, and work efficiency is greatly improved. 3 is integrally molded, a new problem arises in that the cost of the heat insulating plate increases. In addition, joint material 5
Since the and plate-shaped heat insulating material 3 are inseparable, the stacking efficiency during storage and transportation is poor, and this also poses a problem in that costs are high.

Purpose of the Invention The present invention has been made in order to solve these problems.Before pouring concrete, etc., it is possible to easily and firmly apply it to the surface of the heat insulating material on which the concrete, etc. will be placed. To provide a method for easily attaching a joint material that can position and fix the joint material and has low manufacturing cost and storage or transportation cost.

Summary of the Invention The method for attaching joint material according to the present invention is such that when pouring concrete, etc. for holding down on the surface of a heat insulating material in which a plurality of plate-shaped heat insulating materials are laid, the heat of the concrete, etc. after being poured is reduced. In the method of attaching rod-shaped joint materials at appropriate intervals on the surface of the insulation material for the purpose of absorbing strain, etc., a mortise is formed on the surface other than the joint where adjacent plate-shaped insulation materials meet. After the plate-shaped insulation material is laid so that at least a part of the mortises are continuous and no gaps are formed between the plate-shaped insulation materials, the plate-shaped insulation material is fitted into the mortises formed on the surface of the plate-shaped insulation material. A tenon formed at the bottom of the joint material so as to fit together, and a tip formed directly above the tenon, having a width wider than the width of the tenon, and having a bottom surface in surface contact with the surface of the plate-shaped heat insulating material. It is characterized in that the tenons of the joint material whose prevention projections are integrally molded of resin foam are fitted into the tenons of the plurality of heat insulating materials laid.

The joint material used in the present invention can be positioned and attached to the board by simply inserting the tenon formed at the bottom of the joint material into the mortise (handle) hole formed on the surface of the plate-shaped insulation material. It can be done easily. Furthermore, since the bottom surface of the fall-prevention protrusion formed on the joint material comes into surface contact with the surface of the board material, and the tenon fits into the mortise, there is no risk of the joint material falling over or peeling off.

Furthermore, the mortises that fit the tenons of the joint material used in the present invention are not provided at the joints of the plate-shaped insulation material as in the past, but are placed at any point other than the joints on the surface of the plate-shaped insulation material. Therefore, the size of the joint material that fits into this mortise can be made to any size regardless of the size of the plate-shaped heat insulating material. In other words, when laying a large number of plate-shaped insulation materials and placing joint material at the joints of these plate-shaped insulation materials, use joint material whose length is the same as the length of each side of the plate-shaped insulation materials. However,
By using a plate-shaped insulation material having a mortise on the surface of the plate-shaped insulation material, which is independent of the joint part, as in the present invention, for example, one joint material can be used to bridge multiple plate-shaped insulation materials. The length of the joint material can be set completely independently of the size (length and width) of the plate-shaped heat insulating material.

Then, the plurality of plate-shaped insulation materials to be laid are arranged so that the mortises provided in the plate-shaped insulation materials are continuous, so that the joints of the plate-shaped insulation materials and the joints of the joint material do not match. By sequentially fitting the joint material into the mortises in this manner, the plate-shaped heat insulating materials can be interconnected by the joint material.

Furthermore, since the joint material used in the present invention is not molded integrally with the plate-shaped heat insulating material, manufacturing costs, storage, and transportation costs do not increase.

In addition, by changing the height of both ends of the joint material, and by making the joint material have a slope on the upper surface that matches the water slope for rooftop drainage,
It becomes possible to create a slope in the holding concrete part of the roof.

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below based on embodiments shown in the drawings.

Fig. 1 is a sectional view showing the attached state of the joint material according to an embodiment of the present invention, Fig. 2A is a partial perspective view of the joint material used in the same embodiment, and Figs. 2B and C are respectively A partial perspective view of a joint material used in other embodiments,
Fig. 3 is a sectional view showing other usage conditions of the joint material used in the present invention, Fig. 4A is a sectional view taken along the - line shown in Fig. 3, and Figs. 4B to F are other examples. FIG. 5 is a cross-sectional view showing the attached state of joint material used in other embodiments, and FIG. 6 is a cross-sectional view taken along the - line shown in FIG. 5. be.

As shown in FIG. 1, when forming a concrete floor on the roof of a building, a waterproof layer 2 is formed on the roof slab 1, and a plurality of plate-shaped heat insulating materials 10 are placed on the waterproof layer. A heat insulating material layer is formed by laying the plate-shaped heat insulating material 10 in this way, and the holding concrete 4 is placed on the surface of the heat insulating material layer formed by laying the plate-shaped heat insulating material 10.

Further, as shown in FIG. 1, this plate-shaped heat insulating material 10 is provided with a mortise 13 on the surface of the plate-shaped heat insulating material. This mortise 13 is provided on the surface of the plate-shaped heat insulating material other than the joint portion 17 where adjacent plate-shaped heat insulating members meet.

Then, the holding concrete 4 is placed on the plate-shaped insulation material 1.
0 or before installing the holding concrete plate 4 on the surface of the plate-shaped heat insulating material 10, bar-shaped joint material 11 is placed at appropriate intervals on the surface of the plate-shaped heat insulating material 10 as a plate material. will be installed. That is, the mortises 13 provided on the surface of the plate-shaped heat insulating material 10 are formed by adjusting the amount of presser concrete 4 to be poured or the presser foot to be installed so that the joint material can be installed on the surface of the plate-shaped heat insulating material 10 at appropriate intervals. They are provided at arbitrary intervals in consideration of the size of the concrete plate 4 for use.
For example, if the concrete plate 4 for holding down is small, such as a square tile, mortises 13 can be formed on the surface of the plate-shaped heat insulating material 10 at intervals that allow the square tiles to be fitted, and When the concrete 4 or the holding concrete plate 4 is larger than the plate-shaped heat insulating material 10, a mortise 13 is provided at the corresponding position of the plate-shaped heat insulating material 4 where the edge of the holding concrete 4 or the holding concrete plate 4 comes into contact. All you have to do is set it up.

The plate-shaped heat insulating material 10 provided with the mortises 13 in this manner is laid so that the mortises 13 provided in adjacent plate-shaped heat insulating materials 10 are continuous, for example, at least on either the front or back or the left and right sides. . Moreover, at this time, the plate-shaped heat insulating materials 10 are laid so that no gaps are formed between adjacent plate-shaped heat insulating materials 10.

The tenons 12 of the joint material 11 are fitted into the mortises 13 of the plate-shaped heat insulating material 10 laid in this way, and the joint material 1
Install 4. The joint material 11 is arranged in such a way that the joint between the installed plate-like heat insulating materials 10 and the joint material 11 do not match, that is, adjacent plate-like heat insulating materials 10
It is preferable to install so that they are connected by a joint material 11. By providing a mortise as described above on the surface of the plate-shaped insulation material that is not a joint, the position of the mortise is not restricted by the size of the plate-shaped insulation material.
It can be provided at any position. Therefore, when placing a holding concrete plate on the upper surface of this plate-shaped heat insulating material, the shape and size of this holding concrete plate can be arbitrarily selected. Furthermore, since the joining portion of the plate-shaped heat insulating material and the attached portion of the joint material do not coincide, water leakage from the joint material portion can be prevented. Furthermore, as shown in FIG. 1, by fitting the joint material 11 into the mortise and arranging it, the adjacent plate-shaped heat insulating materials 10 are engaged and integrated by the joint material 11. When pouring concrete onto this plate-shaped heat insulating material 10, this plate-shaped heat insulating material 10 will not shift.

The joint material 11 is the holding concrete 4 after pouring.
This is to absorb thermal strain and prevent cracks from occurring in the holding concrete 4.

As shown in detail in FIG. 2A, the joint material 11 used in this embodiment has a tenon 12 formed at its bottom that extends continuously in the longitudinal direction. This tenon 12 is adapted to fit into a mortise 13 formed on the surface of the plate-shaped heat insulating material 10 shown in FIG. Immediately above the tenon 12, there is a protrusion 14 for preventing falling that has a width b wider than the width a of the tenon 12.
are formed integrally with the tenons 12 on both sides of the joint material 11 so as to extend continuously in the longitudinal direction thereof. This tenon 12 has a width a and a protrusion 1 for preventing falling.
The ratio of 4 to the width b is also related to the depth of the mortise 13, but is practically about 1:3 to 1:5. As shown in FIG. 1, the fall prevention protrusion 14 has a bottom surface 15 that makes surface contact with the surface of the plate-shaped heat insulating material 10 as a plate material. The neck portion of the joint material 11 is covered with a cover 16 for the purpose of improving weather resistance or aesthetic appearance. cover 1
As the material of 6, vinyl chloride or the like can be considered.

The tenon 12 formed at the bottom of the joint material 11 needs to fit tightly into the mortise 13 of the plate-shaped heat insulating material 10, and also needs to be easily fitted into the mortise 13, so it must be hardened to a certain extent. It requires flexibility and resilience. Further, the tipping prevention protrusion 14 needs to have appropriate hardness to resist the force that tends to tip down the joint material 11, and softness to the extent that it does not sink into the plate-shaped heat insulating material 10.
Furthermore, the joint material 11 itself needs to have hardness and elasticity to the extent that it can absorb the thermal strain of the concrete after it is placed. Possible materials for the integrally molded joint material 11 that satisfy these requirements include foamed propylene, foamed styrene-ethylene polymer, or rubber. In addition, in the present invention, tenon 1
2, the anti-overturn protrusion 14, and the joint material 11 themselves do not need to be all integrally molded, and may be molded from different materials and then bonded and integrated in a later process. In particular, the tenon 12 is designed to compensate for the insulation loss caused by the mortise 13 formed in the plate-shaped heat insulating material 10.
It is also possible to mold them separately from a heat-insulating material, such as foamable synthetic resin, and to integrate them by adhesion or the like.

The present invention is not limited to the embodiments described above, and can be modified in various ways.

For example, as shown in Figure 2B and C, tenon 12
It may be a joint material 11a in which the cross-sectional shape of a is widened toward the bottom, or the tipping prevention protrusion 1
The joint material 11b may have the cross-sectional shape of the joint material 4a in a trapezoid or other shape.

Further, as shown in FIG. 3, the tenons 12b formed at the bottom of the joint material 11c may be formed intermittently along the longitudinal direction of the joint material 11c. In that case, the cross-sectional shape of the tenon 12b is the fourth
As shown in FIGS. AF, various shapes such as a quadrangle, a hexagon, a cross, a polygon, or a circle are possible. In the case of such an embodiment, it is necessary to change the cross-sectional shape of the mortise formed on the surface of the plate-shaped heat insulating material according to the cross-sectional shape of the tenon 12b.

Furthermore, according to the present invention, as shown in FIGS. 5 and 6, the height h of the joint material 11d excluding the tenon 12b is
may be changed such that it becomes gradually lower along the longitudinal direction of the joint material 11d. Conventionally, for such a joint material 11d, in order to facilitate drainage of rainwater, as shown in FIG. This is very convenient because the mortar dumplings 9 placed on the shaped heat insulating material 3 can be eliminated. Conventionally, in order to create a slope in the joint material 5, mortar dumplings 9, which are mortar materials piled up in the shape of dumplings, are used to form the joint material 5.
was fixed and the height of the mortar balls 9 was varied, but this method was very time consuming and required a long time for the mortar balls 9 to harden, resulting in poor workability. It was hot. On the other hand, the joint material 11d according to this embodiment is advantageous because it can solve these problems.

Effects of the Invention As explained above, according to the present invention, adjacent plate-shaped insulation materials are connected by simply fitting the tenons formed in the joint material into the mortises formed on the surface of the plate-shaped insulation materials. At the same time, the positioning and fixing of the joint material to the board material is completed, and after that, the tipping prevention projections formed on the joint material can easily prevent the joint material from falling over or peeling off. This has the excellent effect of greatly facilitating the work of firmly positioning and fixing the joint material before placing concrete for holding down on the surface of the board material.
Furthermore, since the joint material is not integrally molded with the plate-shaped heat insulating material, there is also an effect that manufacturing costs and storage and transportation costs do not increase.

In addition, as in the present invention, a mortise is formed on any surface of the plate-shaped heat insulating material other than the seam where the plate-shaped heat insulating material meets an adjacent plate-shaped heat insulating material, and the mortises are adjacent to each other so that the mortises are continuous. By arranging the plate-shaped insulation material, there is no direct relationship between the length of the joint material and the size of the plate-shaped insulation material, and therefore, the joint can have any length regardless of the size of the plate-shaped insulation material. material can be used. In addition, since it is possible to provide a mortise at any position on the surface of the plate-shaped insulation material, regardless of the joint part of the plate-shaped insulation material, it is possible to provide a mortise hole at any position on the surface of the plate-shaped insulation material. Since the size is not affected by the size of the plate-shaped heat insulating material and any size of holding concrete plate can be used, work efficiency is greatly improved.

Furthermore, by arranging the joint material in this way, the plate-shaped insulation materials are interconnected by the joint material, a locking force is developed between the plate-shaped insulation materials, and the plate-shaped insulation materials are It never shifts.

In addition, when the joint material is placed in this way, the attachment position of the joint material does not match the seam part of the plate-shaped insulation material, so it is possible to effectively prevent water leakage that tends to occur from the joint material part through the insulation material. It can be prevented.

As described above, according to the method for attaching joint material of the present invention, it is possible to prevent water leakage, integrate plate-shaped heat insulating materials, and diversify the shapes of holding concrete plates.

Furthermore, it is also possible to provide a water gradient in the holding concrete layer or to provide a gradient in the joint itself.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the usage state of a joint material according to an embodiment of the present invention, Fig. 2A is a partial perspective view of a joint material according to the same embodiment, and Figs. 2B and C are respectively A partial perspective view of a joint material according to an embodiment, FIG. 3 is a partial perspective view of a joint material according to another embodiment of the present invention,
FIG. 4A is a sectional view taken along the line - shown in FIG. 3;
Figures 4B to 4F are cross-sectional views similar to Figure A according to other embodiments, and Figures 5a and 5b are perspective views of individual joints with different heights at both ends and their usage conditions. FIG. 6 is a cross-sectional view taken along the - line shown in FIG. 5, FIG. 7 is a cross-sectional view showing how a conventional joint material is used, and FIG. 8 is a conventional joint material. FIG. 3 is a sectional view showing another state of use. 10... plate-shaped heat insulating material, 11, 11a, 11b,
11c, 11d... joint material, 12, 12a, 12
b...Tonon, 13, 13a...Mortise, 14,1
4a...Tip prevention protrusion, 15...Bottom surface, 16...
... Cap, 17 ... Seam part.

Claims (1)

[Scope of Claims] 1. When placing concrete, etc. for holding down on the surface of a heat insulating material layer in which a plurality of plate-shaped heat insulating materials are laid, a method for absorbing thermal strain of the concrete, etc. after being placed. In the method of attaching bar-shaped joint materials at appropriate intervals on the surface of the insulation material layer for the purpose of , After laying the mortise so that at least a part of the mortise is continuous and no gap is formed between the plate-shaped insulation materials, a joint is formed so as to fit into the mortise formed on the surface of the plate-shaped insulation material. A tenon formed at the bottom of the material, and a fall prevention protrusion formed directly above the tenon, having a width wider than the width of the tenon, and having a bottom surface in surface contact with the surface of the plate-shaped heat insulating material. A method for attaching a joint material, which comprises fitting the tenons of the joint material integrally molded from resin foam into the mortises of the plurality of heat insulating materials laid. 2. The method for attaching a joint material according to claim 1, wherein the top part of the joint material is covered with a cover. 3. The method of attaching a joint material according to claim 1, wherein the height of the joint material excluding the tenon varies along the longitudinal direction of the joint material.