JPH04201517A - Installation method for embedding material for concrete slab base - Google Patents

Abstract

PURPOSE:To enhance the working efficiency to a large extent by disposing and fixing one of embedding materials on a concrete base, fixing another embedding material on the upper side of said first embedding material, and then placing concrete. CONSTITUTION:A first embedding material 2 is disposed on a concrete base 1 during the period of cure aging or after solidifying, and said first embedding material 2 is fixed on a concrete base 1 by using a first jig 4. A second embedding material 2 is bonded on the upper side of the first embedding material 2 by means of a bonding agent 5 to form an embedding material 3, and then concrete 6 is placed in a mold or the like on the concrete base 1 disposed with the embedding material 3. As a mounting bed is on the lower side of the light- weight embedding material, the defect of crushing the shape of lower side of the light-weight embedding material because of the wear generated by being in contact with the concrete base, can be prevented and sound insulation and heat insulation effects of the concrete slab base are increased further.

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a construction method for embedding objects inside a concrete slab for the purpose of reducing weight, improving sound insulation, and improving heat insulation performance. The present invention relates to a good method for burying objects, which allows the objects to be easily attached to a slab substrate and firmly fixed.

[Conventional technology]

In recent years, the construction industry has been changing from a site-centered construction model to an on-site assembly construction model that uses large-scale construction materials produced in factories, due to the lack of human resources, rising labor costs, and demands for shorter construction periods.

Additionally, as buildings become taller, there is a demand for lighter structures and multi-functionality to provide comfortable livability. For floors and ceilings, which are the basic structure of buildings, instead of constructing reinforced concrete slabs on-site, a thin concrete substrate that can also be used as formwork is created in advance at a factory, which is then placed at the construction site and poured on-site with concrete. Many methods are being adopted, such as pouring concrete. It is known that this construction method is improved by burying various hollow objects in concrete slabs in order to reduce weight and improve sound insulation and heat insulation effects. In particular, when a synthetic resin foam molded product such as styrofoam is used as a buried object, it is not only more convenient because it is cheaper than 44 materials, but also has lighter weight, improved sound insulation effect, and improved heat insulation performance. It is also becoming recognized that it has excellent effects such as: However, even with these advantages, synthetic resin foam molded products such as styrofoam are lightweight, so they are susceptible to external stress during manufacturing, storage, and transportation, as well as on-site stress during post-construction. The challenge was how to make the fixation to the concrete substrate strong enough to withstand pouring concrete, and it was also necessary to create a space in the synthetic resin foam molded product to reduce cost and weight. . As prior art related to these, Japanese Patent Publication No. 57-47007, Japanese Patent Publication No. 57-470
There are techniques disclosed in Japanese Patent Publication No. 08, Japanese Patent Publication No. 12013/1983, and the like.

[Problem to be solved by the invention]

However, according to the example of the prior art described above, there are problems as described below. First of all, there is a method of fixing it to a concrete substrate, for example,
In Publication No. 7, recesses or protrusions are provided on the bottom of an embedding material made of a synthetic resin foam molded product, the uneven portions are buried in an unhardened concrete substrate, and the embedding material is then bonded to the concrete substrate as the concrete hardens. This is a method of fixing it on top, but in this case, it is only possible to embed the uneven part immediately after the concrete is poured, when the concrete is sufficiently soft, and if you try to bury it in a semi-hardened state, the uneven part will be buried. Difficulties such as damage. Currently, steam curing is widely used, and in this case, concrete hardens in a few hours.

Furthermore, if the lower side of the implant is hollow, it is not possible to provide an uneven portion on the entire ventral surface of the implant.
There are restrictions on fixed locations. Japanese Patent Publication No. 57-47008 proposes a method in which one end of the locking tool is buried in the concrete substrate and the embedded material is pierced or held therein. Fixation is limited to the periphery of the bottom part. Furthermore, although it is not impossible to consider the use of a single locking tool that penetrates the embedding material from above, it would be uneconomical and unreasonable. In particular, when the lower side of the embedding material is hollow, only the peripheral edge of the bottom surface of the embedding material can be used for fixing. Also, -
Fixation methods that involve projectively piercing or enclosing a flexible material such as a synthetic resin foam with a locking tool such as a metal may depend on the frictional resistance between the surface of the insertion portion of the locking tool and the foam. It is easily estimated that the fixing ability will be significantly lower than the fixing method of using a large fastener with a head such as a nail or screw and holding it down with the head. Tokuji Showa 60-12013
The technology disclosed in the publication proposes a method in which a cutout step is provided around the embedding material for use with a locking tool, and the locking tool is inserted into this step to fix it on the concrete substrate. Although this method allows the use of locking devices such as nails and screws with heads, the fixing locations are limited to the periphery of the embedded material;
There are some drawbacks, such as the need for some concentration in the fixing work in order to securely fix it. The second problem is that in all of the examples of the prior art mentioned above, in order to reduce the weight of the embedding material itself, a recessed space is formed on the bottom side of the embedding material, with a concave shape that does not penetrate into the surface. The installation method uses a limited space section with an open space below. This is because synthetic resin foam molded products are usually obtained by in-mold foam molding, which inevitably limits the shape, but since the lower side of such embedding materials is hollow, When a worker stands on the top of the embedding material and a load is applied to it, there is a problem in that the bottom side of the embedding material collapses due to abrasion with the concrete substrate. Furthermore,
Since the lower side of the embedded material is hollow, there is a problem that the sound insulation effect and heat insulation performance are inferior.

[Means to solve the problem]

The present invention has been made in view of the above circumstances, and its means are based on the fact that the prior art attempts to fix a lightweight buried object made of a single synthetic resin foam molded product on a concrete substrate. This was done in view of the circumstances that inevitably include the various constraints described above, and the means to do so is to cure one of the embedded objects consisting of two or more embedded materials. After placing and fixing on a concrete substrate during the aging period or after solidification, another embedding material is fixed above the embedding material fixed on the concrete substrate to form an embedded object. 7 concrete is cast on a concrete substrate on which embedded objects are placed, and each of the embedded materials is made of a synthetic resin foam molded product, and furthermore, at least among the embedded materials, at least The embedding material to be fixed is a molded product made of a wood-based material, a rubber or synthetic resin molded product. Furthermore, the means for fixing another embedded material above the embedded material fixed on the concrete substrate is by fitting and locking of fitting and locking parts formed on adjacent embedded materials. , or by using an adhesive. Another advantage is that a space is formed inside the buried object. Furthermore,
This is where a hard material is laid on the surface of the uppermost embedding material in an embedding object consisting of two or more embedding materials. Furthermore, the first means for fixing the embedded material to the concrete substrate is to use a fixing jig and an adhesive.

[Effect]

According to the above method, one of the embedding materials is placed and fixed at a desired position on the concrete substrate during the curing period or after solidification, and then the remaining embedding materials are placed on top of it. All you have to do is fix them together, put them together, and then pour concrete.

〔Example〕

Embodiments of the invention will be described below with reference to the drawings.

FIG. 1 shows a state in which a plurality of embedded objects 3 made of two embedded materials 2 are aligned and fixed on a concrete substrate 1 by the method of the present invention.

To explain this in more detail based on the first embodiment shown in FIG. The first embedding material 2 is fixed on the concrete substrate l, and the second embedding material 2 is bonded with adhesive 5 above the first embedding material 2 to form the embedded object. After that, as shown in FIG. 10, concrete 6 is poured into a formwork (not shown) on the concrete substrate 1 on which the buried object 3 is placed. In the figure, A indicates reinforcing bars placed as necessary. Materials for the embedding material 2 include, in addition to synthetic resin foam moldings, 1. moldings made of wood-based materials, rubber moldings, synthetic resin moldings, etc.; Other materials may be used as long as they have good performance and heat insulation properties, and are not particularly limited. Unlike the case of this embodiment, since the embedding material 2 has a flat plate shape, it has the advantage that it can be easily molded.

In the second embodiment shown in FIG. 3, a concave second embedding material 2 with an open bottom is fixed above the first embedding material 2 with an adhesive 5.

According to this embodiment, since the space 7 is formed inside the buried object 3, the material used and the weight of the buried object 3 can be reduced, and the sound insulation and heat insulation effects are increased. be. Appropriate materials for the second embedding material 2 to be used include wood, molded products of hard synthetic resin, and the like.

In the third embodiment shown in FIG. 4, the upper surface of the first embedding material 2 is formed into a wavy uneven shape, and the lower surface of the second embedding material 2 placed on top is formed into a wavy shape corresponding to the above. The two embedding materials 2 are formed into a concavo-convex shape and are placed together. The first embedding material 2 is fixed to the concrete substrate 1 using adhesive 5.
are using.

Further, the two embedding materials 2 are also fixed by the adhesive 5. According to this embodiment, there is an advantage that the work of overlapping the two embedded materials 2 can be easily performed by fitting them into each other's uneven shapes. Further, as the material of the embedding material 2, in addition to a synthetic resin foam molded product, wood, rubber, synthetic resin, etc. are suitable.

In the fourth embodiment shown in FIG. 5, the first embedded material 2 and the concrete substrate 1 are fixed with double-sided nails as a fixture 4, and The embedding material 2 is fixed to the embedding material 2 by a convex fitting locking part 8 provided on the lower surface of the first embedding material 2 and a concave fitting portion 8 provided on the top surface of the second embedding material 2. This is an example in which the locking is performed by fitting and locking the stop portion 9. In this case, the two fitting and locking parts 8.9 are connected by utilizing the elasticity of the two embedding materials 2, so synthetic resin foam molded products, rubber, synthetic resin, etc. are suitable. It is. According to this embodiment, no adhesive is required to fix the two embedded materials 2, so that work efficiency is further improved.

In the fifth embodiment shown in FIG. 6, a recess 7a provided on the upper surface of the first embedded material 2 and a fourth portion 7b provided on the lower surface of the second embedded material 2 are arranged to face each other. By fixing the two embedded materials 2 using fasteners such as double-sided nails,
A space 7 is provided inside. In addition to the same advantages as in the second embodiment, this embodiment also has the following advantages:
There is an advantage that even a relatively soft material such as a synthetic resin foam molded product can be used as the second embedding material 2.

In the sixth embodiment shown in FIG. 7, the side edge of the first embedded material 2 is fixed to a concrete substrate using a forked nail as a fixing jig 4.
A second embedding material 2 is fixed on top of it with adhesive 5, and the material is made to not deform even if a worker stands on the top surface of this second embedding material 2 during work. A surface material 1) made of a hard material is fixed with an adhesive 5. This embodiment is particularly effective when the second embedding material 2 is made of a soft material such as a synthetic resin foam molded product.

The seventh embodiment shown in FIG. 8 is an example in which three embedding materials 2 are used. First, the first embedding material 2 is used as a fixing jig 4 and a needle is used to make the concrete. It is fixed on the substrate l and is fixed by fitting and locking the fitting locking portions 8.9, each of which has two second and third embedded materials 2 above it. .

In the eighth embodiment shown in FIG. 9, two embedding materials 2 are fixed laterally above the first embedding material 2 with an adhesive 5.

In the case of the 8th and 9th embodiments, the embedded material 2 can be divided into small pieces, so if it is made of wood, waste wood can be used,
Moreover, it is effective when the buried object 3 is used in a deformed manner depending on the location where it is used in the concrete slab.

The material of the embedding material 2, the means for fixing the embedding materials 2 to each other, the shape of the embedding material 2, etc., which have been variously explained in the above eight embodiments, can be used in various combinations as necessary. It is not limited to the examples. Furthermore, regarding the means for fixing the first embedding material 2 to the concrete substrate l,
Since various fixing jigs 4 and adhesives 5 may be selected and used as appropriate, the present invention is not limited to those shown. For example, when used during the curing and maturing period of the concrete substrate 1,
By inserting one side of the double-sided nail lightly by hand, you can press the first embedding material 2 on top of it after it hardens; 2 and can be fixed by driving a concrete nail with a head.

〔Effect of the invention〕

As is clear from the above explanation, according to the method of the present invention, since the buried object is composed of two or more embedded material members, when fixing it on the concrete substrate, the first buried object is first fixed. The filling material is fixed onto the concrete substrate, and then this 1
Other embedding materials may be fixed in sequence above the first embedding material. Therefore, to fix the first embedding material on the concrete substrate, a nail with a head that penetrates the first embedding material can be used as a fixing jig. As many fixing jigs as required can be used from any position on the embedded material, work efficiency can be greatly improved. Further, when the adhesive is used for fixing, there is an advantage that the work of attaching or driving a fixing jig can be omitted. Furthermore, unlike conventional methods, the lower side of the lightweight buried object is not left as a space, but instead there is a mounting base below it, which eliminates the drawback that the shape of the lower side of the lightweight buried object gets distorted due to abrasion with the concrete substrate. It can be prevented. Furthermore, by providing such a mounting base, the sound insulation and heat insulation effects of the concrete slab substrate are further expanded.

Furthermore, by forming recesses on the opposing sides of the mounting base and the lightweight buried object, a space is formed when the fitting and locking parts of each other are fitted and locked, and this space provides sound insulation and In addition to further increasing the heat insulation effect, it is possible to reduce weight and save raw materials.

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a state in which a buried object is mounted on a concrete substrate, and FIG.
In the example, a sectional view taken along line nn in Fig. 1, Fig. 3 is a sectional view of the second embodiment at the same location as Fig. 2, Fig. 4 is a sectional view of the third embodiment, and Fig. 5. is a sectional view of the fourth embodiment, FIG. 6 is a sectional view of the fifth embodiment, FIG. 7 is a sectional view of the sixth embodiment, FIG. 8 is a sectional view of the seventh embodiment, and FIG. 9 is a sectional view of the eighth embodiment, and FIG. 10 is a sectional view taken along the line X-X in FIG. 1 when a concrete slab substrate is formed using the embedding material of the first embodiment.

l...Concrete board 2...embedding material 3... Buried objects 4...Fixing jig 6...Concrete 7...Space part 8.9.--Fitting and locking Patent applicant Kanebuchi Chemical Industry Co., Ltd. Representative Patent Attorney Mihiko Watanabe 1st WA l...Concrete board 2...embedding material l3rlA l...Concrete board 5th N Figure 7 7...Space part 8.9...Fitting and locking Fig. 8 Fig. 9 2...embedding material 6...Concrete

Claims (10)

[Claims] (1) After placing and fixing one of the embedded objects consisting of two or more embedded materials on the concrete substrate during the curing period or after solidification, above the embedded material fixed on the concrete substrate. A method for attaching a buried object to a concrete slab substrate, characterized in that the buried object is formed by fixing another embedding material to the substrate, and then concrete is poured onto the concrete substrate on which the buried object is placed. Law. (2) A method for attaching embedded objects to a concrete substrate, wherein each of the two or more embedded materials according to claim (1) is made of a synthetic resin foam molded product. Ru. (3) Embedding in a substrate for a concrete slab, characterized in that at least the embedding material to be fixed on the concrete substrate among the two or more embedding materials set forth in claim (1) is a molded product made of a wood-based material. How to install things. (4) An embedded material for a concrete slab substrate, characterized in that at least the embedded material to be fixed on the concrete substrate among the two or more embedded materials set forth in claim (1) is a rubber or synthetic resin molded product. Installation method. (5) The means for fixing another embedding material above the embedding material fixed on the concrete substrate according to claim (1) includes fitting locking portions formed on adjacent embedding materials. A method for attaching buried objects to a concrete slab substrate, characterized by fitting and locking. (6) Embedding in a concrete slab substrate characterized in that the means for fixing another embedded material above the embedded material fixed on the concrete substrate according to claim (1) is an adhesive. How to install things. (7) A method for attaching a buried object to a substrate for a concrete slab, characterized in that a space is formed inside the buried object consisting of two or more embedding materials according to claim (1). (8) A method for attaching an embedded object to a concrete slab substrate, characterized in that a hard material is laid on the surface of the uppermost embedded material of the embedded object consisting of two or more embedded materials according to claim (1). . (9) The means for placing and fixing one of the embedded objects consisting of two or more embedded materials set forth in claim (1) on the concrete substrate during the curing period or after solidification uses a fixing jig. 1. A construction method for attaching buried objects to a concrete slab substrate. (10) The means for placing and fixing one of the embedded objects consisting of two or more embedded materials in claim (1) on the concrete substrate during the curing period or after solidification is by using an adhesive. A method for installing buried objects on a concrete slab substrate, characterized by: