JPH1044125A - Substrate for concrete slab and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a substrate for a concrete slab having such a structure that efficiency of manufacturing operation and cost reduction are contrived. SOLUTION: Concrete-filling through-holes 4 penetrated in the vertical direction are provided in the buried materials 2 consisting of a foamed molding made of synthetic resin. The cross section of the upper opening is formed larger than the cross section of the lower opening in any part of the horizontal sections of the concrete-filling through-holes 4. The buried materials 2 are arranged on a concrete substrate 1 and fixed. Concrete is filled into the concrete-filling through-holes 4 and integrally fixed to the concrete substrate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete slab substrate having a structure in which an embedding material made of a synthetic resin foam molded article is arranged and fixed on a concrete substrate, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Recently, a concrete slab substrate having a structure in which an embedding material made of a synthetic resin foam molded product is arranged on a concrete substrate and fixed with a fastener as a floor material and a ceiling material of a building. Proposed.

[0003] By using such a substrate for concrete slab, concrete is poured on site to construct the floor and ceiling of the building, thereby saving labor for constructing the floor and ceiling of the building. There are advantages such as weight reduction and excellent sound insulation performance. In the production of a concrete slab substrate having such a structure, after placing concrete forming a concrete substrate in a mold, during the curing process in which the concrete substrate has not yet hardened, while observing the degree of coagulation, An embedding material is provided on the upper surface, and the embedding material is fixed to the concrete substrate with a locking tool.

[0004]

However, in the production of such a substrate for concrete slab, an operator monitors the state of curing of the concrete substrate, and when the degree of coagulation is moderate, the embedding material is removed from the concrete. Since the embedding material was fixed on the concrete board by arranging it on the board and hitting the locking member in a semi-dry state, there was a problem that the work had to be proceeded at the discretion of a skilled worker. Was.

[0005] Further, in this manufacturing method, there is a problem that a locking tool is necessarily required, which causes an increase in cost.

An object of the present invention is to provide a concrete slab substrate having a structure capable of reducing costs.

Another object of the present invention is to provide a concrete slab substrate capable of improving the fixing strength of an embedding material to a concrete substrate.

Another object of the present invention is to provide a method of manufacturing a concrete slab substrate having a structure that can be easily manufactured without requiring skill.

[0009]

SUMMARY OF THE INVENTION The present invention is to improve a concrete slab substrate in which an embedding material made of a synthetic resin foam molded article is arranged and fixed on a concrete substrate.

In the concrete slab substrate according to the first aspect, the embedding material is provided with a concrete filling through hole that penetrates in a vertical direction, and the concrete filling through hole is provided at any position in a horizontal cross section thereof. The upper opening cross-sectional area is larger than the lower opening cross-sectional area, and concrete is filled in the concrete filling through-hole, and is fixed integrally to the concrete substrate.

Thus, the concrete filling through hole penetrating in the vertical direction is provided in the embedding material, and the concrete filling through hole has an upper opening cross-sectional area larger than a lower opening cross sectional area at any point in the horizontal cross section. When the concrete is filled into the concrete filling through hole, the concrete in the concrete filling through hole is fixed integrally to the concrete substrate, and the concrete in the concrete filling through hole is filled with the concrete filling through hole. Since the upper portion is larger than the lower portion, the embedding material is pressed down, and the concrete in the concrete filling through hole fixes the embedding material to the concrete substrate.

As described above, in the concrete slab substrate of the present invention, since the embedding material can be fixed to the concrete substrate without the use of the fastener, the cost can be reduced.

According to a second aspect of the present invention, there is provided a concrete slab substrate, wherein a lower surface of the embedding material is provided with a cut-in portion which cuts into the concrete substrate.

If the undercut portion is provided on the lower surface of the embedding material as described above, after the concrete forming the concrete substrate is cast in the formwork, when the embedding material is disposed on the upper surface of the concrete, The bite part cuts into the concrete board,
The embedding material can be prevented from moving on the concrete having fluidity by the bite portion, and the embedding material can be easily positioned.

In the concrete slab substrate according to a third aspect of the present invention, the embedding material is provided with a plurality of spaces opening to the bottom surface side, and the lower edge of the embedding material communicates the space with the outside. The communication groove is provided.

When a communication groove for communicating the space with the outside is provided at the lower edge of the embedding material provided with the plurality of spaces opening to the bottom side as described above, the concrete substrate cast in the formwork is provided. When the embedding material is arranged on the upper surface of the concrete forming the water, the water on the concrete in the portion covered with the space flows out from the communication groove provided on the lower edge of the embedding material, so that Water can be prevented.

In the concrete slab substrate according to a fourth aspect of the present invention, the embedding material is provided integrally with the locking head locked in the concrete filling through-hole and the locking head. And anchoring to the concrete substrate with a reinforcing material having an anchor leg buried therein.

The reinforcing member having the locking head locked in the concrete filling through hole and the anchor leg integrally provided on the locking head and embedded in the concrete substrate. When the embedding material is fixed on the concrete substrate,
The fixing strength of the embedding material made of concrete in the concrete filling through hole to the concrete substrate can be further improved.

The present invention also improves a method of manufacturing a concrete slab substrate having a structure in which an embedding material made of a synthetic resin foam molded article is arranged and fixed on a concrete substrate.

In the method for manufacturing a concrete slab substrate according to a fifth aspect of the present invention, as an embedding material, a concrete filling through-hole having a shape in which the upper opening is larger than the lower opening is vertically penetrated. After the concrete forming the concrete substrate is poured into the formwork using the structure described above, an embedding material is disposed on the upper surface of the concrete, and then the concrete is inserted into the concrete filling through hole of the embedding material. It is characterized in that concrete is filled and integrated with concrete forming the lower concrete substrate.

As described above, a concrete substrate is formed by using an embedding material having a structure in which a concrete filling through hole having a shape whose upper side opening is larger than that of the lower side opening penetrates vertically. After the concrete to be cast is poured into the formwork, an embedding material is disposed on the upper surface of the concrete, and then the concrete is filled in the concrete filling through hole of the embedding material to form a lower concrete substrate. When the method of integrating with the concrete to be used is adopted, the embedding material can be disposed in a state where the concrete forming the concrete substrate is uncured and has fluidity, and the setting of the concrete forming the concrete substrate as in the past is performed. It is not necessary to proceed with the operation according to the degree of the slab, and even an unskilled person can easily manufacture a concrete slab substrate having required performance.

Further, according to this manufacturing method, the operation of placing concrete in the formwork, arranging the embedding material, and filling the concrete into the concrete filling through hole of the embedding material is performed continuously. After that, the curing process starts, so after the work of filling concrete into the concrete filling through hole, it is possible to leave the work site and manufacture another concrete slab substrate, so that the concrete slab substrate is The mass productivity of manufacturing can be improved, and labor costs can be reduced.

[0023]

1 to 5 show an embodiment of a concrete slab substrate according to the present invention. In the drawings, reference numeral 1 denotes a concrete substrate formed in a predetermined size, and reference numeral 2 denotes an embedding material formed of a synthetic resin foam molded product disposed and fixed on the upper surface of the concrete substrate 1.

The embedding material 2 is formed of a synthetic resin foam molded article having closed cells, such as a polystyrene foam, and is opened on the bottom side to provide a plurality of spaces 3 for material saving and weight reduction. This is the same as in the prior art. The embedding material 2 may be of a solid type or the like.

In the embedding material 2 of this embodiment, concrete filling through holes 4 which are located at the center in the width direction and penetrate vertically are provided at a plurality of locations in the longitudinal direction. These concrete filling through-holes 4 are formed such that the upper opening cross-sectional area is larger than the lower opening cross-sectional area at any point in the horizontal cross section. The concrete filling through hole 4 of this example is
The upper surface side opening 4a is formed larger than the lower surface side opening 4b, and each concrete filling through hole 4 is formed by four tapered surfaces in a truncated square pyramid shape, and the opening dimension of the upper surface side opening 4a is reduced. The opening size of the lower opening 4b is 60 mm. The concrete filling through hole 4 is filled with concrete and fixed integrally with the concrete substrate 1. Each edge of the embedding material 2 is a tapered surface 5 that opens toward the upper surface. A communication groove 16 for communicating the space 3 with the outside is provided at the lower edge of the embedding material 2.

When the communication groove 16 for communicating the space 3 with the outside is provided in the lower edge of the embedding material 2 as described above, the embedding material 2 is embedded in the upper surface of the concrete forming the concrete substrate 1 cast in the formwork. When the filling material is provided, the water on the concrete in the portion covered with the space flows out to the outside from the communication groove 16 provided on the lower edge of the filling material 2, so that the water pool in the space can be prevented. .

Next, a method of manufacturing a concrete slab substrate using such an embedding material 1 will be described with reference to FIG. After arranging the reinforcing bars 7 in the formwork 6, the concrete 8 for forming the concrete substrate 1 in the formwork 6 is formed.
Is installed. The above-mentioned embedding material 2 is arranged on the upper surface of the concrete 8 at a predetermined interval. The placement of the embedding material 2 is performed immediately after the concrete 8 is cast. Next, concrete 9 is filled in each concrete filling through hole 4 of the embedding material 2 to form the concrete substrate 1 on the lower side.
And integrated.

As described above, the concrete filling through hole 4 penetrating the embedding material 2 in the up-down direction is formed, and the concrete filling through hole 4 is formed such that the upper opening 4a is larger than the lower opening 4b. When the concrete 9 is filled in the through hole 4, the concrete 9 in the concrete filling through hole 4 is fixed integrally with the concrete 8 forming the concrete substrate 1. The concrete 9 in the concrete filling through hole 4 presses the embedding material 2, and the concrete 9 in the concrete filling through hole 4 fixes the embedding material 2 to the concrete substrate 1.

As described above, in the concrete slab substrate of the present embodiment, since the embedding material 2 can be fixed to the concrete substrate 1 without any locking member, the cost can be reduced accordingly.

Further, the embedding material 2 can be disposed in a state where the concrete 8 forming the concrete substrate 1 has fluidity, and according to the degree of coagulation of the concrete 8 forming the concrete substrate 1 as in the prior art. It is not necessary to proceed with the work, and even an unskilled person can easily manufacture a concrete slab substrate having required performance.

According to this manufacturing method, the concrete 8 is poured into the form 6, the embedding material 2 is provided, and the embedding material 2 is disposed.
The concrete filling operation of the concrete filling through hole 4 is performed continuously after that, and then the curing process is started. It is possible to manufacture a substrate for concrete slab, and therefore, it is possible to improve the mass production efficiency and reduce labor costs of manufacturing a substrate for concrete slab as compared with the related art.

FIG. 7 shows another example of the embedding material 2 used in the present invention. The embedding material 2 of this example is provided with an edge-shaped biting portion 10 along the edge of the lower surface of the embedding material 2 having the structure shown in FIG. The bite portion 10 is provided with the embedding material 2
May be provided at appropriate intervals on the lower surface of the device.

When the edge-shaped biting portion 10 is provided at the edge of the lower surface of the embedding material 2 as described above, the concrete 8 forming the concrete substrate 1 in the formwork 6 as shown in FIG. When the embedding material 2 is arranged on the upper surface of the concrete 8 after the casting, the biting portion 10 bites into the concrete 8 forming the concrete substrate 1 and the embedding material 2 moves on the concrete 8 having fluidity. Digging part 10
And the positioning of the embedding material 2 can be easily performed.

FIGS. 8 to 10 show other examples of the embedding material 2 used in the present invention. The embedding material 2 of the present example is formed to have a length about 1.5 times as long as the width.
In the manufacturing process of the concrete slab substrate, steam curing may be performed to accelerate hardening of the concretes 8 and 9. In this case, if the vertical width is longer than the horizontal width, deformation or distortion occurs in the embedded material 2 at the heating temperature during steam curing, and the embedded material 2 is deformed or distorted by the concrete filling through hole 4. Concrete 9 and concrete board 1 inside
There is a possibility that cracks may occur between the concrete and the concrete 8 that forms the cracks. Thus, as in the present example, the embedding material 2 is formed to have a length approximately 1.5 times as long as the width, so that the concrete 8, 9 is hardened in the manufacturing process of the concrete slab substrate. For promotion, even if steam curing is performed, the amount of deformation and distortion generated in the implant 2 at the heating temperature is small,
The occurrence of cracks between the concrete 9 in the concrete filling through hole 4 and the concrete 8 forming the concrete substrate 1 can be suppressed.

In this embodiment, a protrusion 11 is provided at one end of the embedding material 2 in the longitudinal direction, and the protrusion 11 is provided at the other end.
Is provided with a concave portion 12 having a shape that can be loosely fitted. With such a shape, when the embedding material 2 is arranged on the concrete 8 forming the concrete substrate 1 in the manufacturing process of the concrete slab substrate, the protrusion 1 of the embedding material 2 is used.
By loosely fitting the concave portion 12 of 1 with the embedding material 2, it is easy to obtain a vertical direction.

FIG. 11 shows another example of the concrete slab substrate according to the present invention. In this example, the embedding material 2 is inserted into the concrete head 8 fixed to the inner surface of the concrete filling through hole 4 and the concrete 8 provided integrally with the head 13 to form the concrete substrate 1. It is fixed to the concrete substrate 1 by a reinforcing member 15 having an embedded anchor leg 14. The anchor leg 14 is bent so that it is difficult to get out of the concrete substrate 1.

The locking head 13 thus locked in the concrete filling through hole 4 and the anchor leg 14 provided integrally with the locking head 13 and embedded in the concrete substrate 1 are combined. When the embedding material 2 is fixed to the concrete substrate 1 by the provided reinforcing material 15, the concrete substrate 1 of the embedding material 2 by the concrete 9 in the concrete filling through hole 4 is provided.
Can be further improved.

In each of the above embodiments, the shape of the concrete filling through hole 4 is a truncated quadrangular pyramid having four tapered surfaces. However, the shape of the concrete filling through hole 4 is not limited to this. Instead, a pair of opposing surfaces is a tapered surface, and the other pair of surfaces is a parallel surface, or a truncated cone shape, or an upper opening is a lower opening. It is sufficient that the upper opening cross-sectional area is larger than the lower opening cross-sectional area at any point in the horizontal cross section, such as a shape in which the inner surface changes stepwise in a larger state.

[0039]

In the concrete slab substrate according to the first aspect of the present invention, a concrete filling through hole penetrating in the vertical direction is provided in the embedding material.
Since the upper opening cross-sectional area is formed larger than the lower opening cross-sectional area at any point in the horizontal cross section, and concrete is filled in the concrete filling through hole,
The concrete in the concrete filling through-hole is fixed integrally to the concrete substrate, and the concrete in the concrete filling through-hole holds down the embedding material because the upper part is larger than the lower part from the shape of the concrete filling through-hole. As a result, the embedding material does not come off from the concrete substrate, and the embedding material can be fixed to the concrete substrate without using a locking device. Thus, since the locking device can be omitted, the cost can be reduced accordingly. Can be achieved.

In the concrete slab substrate according to the second aspect of the present invention, since the undercut portion is provided on the lower surface of the embedding material, the concrete forming the concrete substrate is poured into the formwork, and then the upper surface of the concrete is formed. Even if an embedding material is provided, the embedding material can be prevented from moving on the concrete having fluidity by the bite portion, and the embedding material can be easily positioned.

In the substrate for concrete slab according to the third aspect, the embedding material is provided with a plurality of spaces opening to the bottom surface side, and the lower edge of the embedding material communicates the space with the outside. When the embedding material is disposed on the upper surface of the concrete forming the concrete substrate cast in the formwork, the water on the concrete in the portion covered by the space is buried. Since the water flows out from the communication groove provided on the lower edge of the filling material, water pools in the space can be prevented.

In the concrete slab substrate according to the fourth aspect, a locking head locked in the concrete filling through hole and the locking head are provided integrally and embedded in the concrete substrate. Since the embedding material is fixed to the concrete substrate by the reinforcing material having the anchor leg portion, the fixing strength of the embedding material by the concrete in the concrete filling through hole to the concrete substrate can be further improved.

In the method for manufacturing a concrete slab substrate according to a fifth aspect of the present invention, as the embedding material, a concrete filling through hole having a shape in which the upper opening is larger than the lower opening penetrates vertically. After the concrete forming the concrete substrate is cast into the form using the structure provided, an embedding material is disposed on the upper surface of the concrete, and then the concrete filling penetrating of the embedding material is performed. Since the hole is filled with concrete and integrated with the concrete that forms the lower concrete substrate, the concrete that forms the concrete substrate is poured into the formwork and the embedding material is immediately distributed. It is not necessary to proceed according to the degree of coagulation of the concrete forming the concrete substrate as in the past, and even unskilled persons can easily perform the required operations. It is possible to produce a concrete slab substrate for ability.

Further, according to this manufacturing method, the operation of placing concrete in the formwork, disposing the embedding material, and filling concrete into the concrete filling through hole of the embedding material is performed continuously. After that, the curing process starts, so after the work of filling concrete into the concrete filling through hole, it is possible to leave the work site and manufacture another concrete slab substrate, so that the concrete slab substrate is It is possible to improve the mass production efficiency of manufacturing and reduce labor costs.

[Brief description of the drawings]

FIG. 1 is a partial labor-saving sectional view showing an example of an embodiment of a concrete slab substrate according to the present invention.

FIG. 2 is a perspective view of the embedding material shown in FIG. 1 from the upper surface side.

FIG. 3 is a perspective view of the embedding material shown in FIG. 1 as viewed from the lower surface side.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a cross-sectional view showing one example of a concrete slab substrate according to the present invention during manufacture.

FIG. 7 is a sectional view showing another example of an embedding material used in the present invention.

FIG. 8 is a top perspective view showing another example of an embedding material used in the present invention.

9 is a perspective view of the embedding material shown in FIG. 8 as viewed from the upper surface side.

FIG. 10 is a perspective view showing an example of the arrangement of the embedding material shown in FIG. 8;

FIG. 11 is an enlarged sectional view of a main part showing another example of the concrete slab substrate according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 concrete substrate 2 embedding material 3 space 4 concrete filling through hole 4 a upper surface side opening 4 b lower surface side opening 5 tapered surface 6 formwork 7 reinforcing bar 8 concrete 9 concrete 10 bite portion 11 protrusion 12 recess 13 locking head 14 Anchor leg 15 Reinforcement 16 Connection groove

Claims (5)

[Claims] 1. A concrete slab substrate in which an embedding material made of a synthetic resin foam molded product is disposed and fixed on a concrete substrate, wherein the embedding material has a concrete filling through hole penetrating vertically. The concrete filling through hole is formed such that the upper opening cross-sectional area is larger than the lower opening cross sectional area at any point in the horizontal section, and the concrete filling through hole is filled with concrete. A substrate for a concrete slab, which is integrally fixed to the substrate. 2. The concrete slab substrate according to claim 1, wherein a cut-in portion that cuts into the concrete substrate is provided on a lower surface of the embedding material. 3. The embedding material is provided with a plurality of spaces opening to the bottom side, and a communication groove for communicating the space with the outside is provided at a lower edge of the embedding material. The concrete slab substrate according to claim 1 or 2, wherein 4. An embedding material, comprising: a locking head locked in the concrete filling through hole; and an anchor leg integrated with the locking head and embedded in the concrete substrate. The concrete slab substrate according to claim 1, wherein the substrate is fixed to the concrete substrate with a reinforcing material having the following. 5. A method of manufacturing a concrete slab substrate having a structure in which an embedding material made of a synthetic resin foam molded article is arranged and fixed on a concrete substrate, wherein the embedding material is an upper surface side opening. After the concrete forming the concrete substrate is poured into a formwork using a structure in which a concrete filling through hole having a shape larger than the lower surface side opening portion is provided to penetrate vertically, Concrete, wherein the embedding material is disposed on an upper surface, and then concrete is filled in the concrete filling through hole of the embedding material to be integrated with concrete forming the lower concrete substrate. A method for manufacturing a slab substrate.