JPS589216B2 - Insulation method for concrete buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat insulation method for concrete buildings.

Insulation methods for concrete buildings include attaching a heat insulating plate to a concrete slab that has been poured, and joining the heat insulating plate to the concrete at the same time as the concrete is poured.

Insulating boards used include those made of wood wool bonded and pressed into a board shape, those made of expanded polystyrene, and those made of inorganic fibers such as glass wool, rock wool, and slag wool, which are hardened into a board shape. ing.

Among these, those made of inorganic fibers not only have good heat insulation properties but also have the best nonflammability.
It is extremely preferable as a building material.

In order to simplify the explanation, the case where a plate made of glass wool is used will be explained below as an example.As a method of joining the glass wool plate to the concrete at the same time as concrete pouring, the glass wool plate is protruded through the glass wool plate. There is a known method of joining the concrete and the heat insulating board by using an anchor fitting that embeds the protruding part of the anchor fitting in concrete, but when this method is used, the anchor fitting becomes a thermal bridge (i.e., a path for transmitting heat). This impairs the insulation effect.

Another drawback is that slag (a highly fluid, watery material that separates before the concrete hardens) leaks from the joints of the insulation boards, causing the insulation boards to be glued to the formwork that supports them from below. There is.

The present inventor has conducted extensive research in order to eliminate such inconveniences, and has completed the present invention.

In concrete construction, the present invention uses a method of joining concrete and a heat insulating board at the same time as pouring concrete onto the heat insulating board, so that no thermal bridging phenomenon occurs, therefore, the heat insulating effect of the heat insulating board is not inhibited, and the concrete slab is bonded to the concrete slab. The purpose of this is to provide an insulation method that firmly holds insulation boards and prevents slag from leaking. Between,
An upper plate and a lower plate are supported substantially parallel to each other by pillars at approximately the center thereof, and the upper plate is provided with a protruding portion having a curved portion, and a support tool molded from synthetic resin or rubber is sandwiched between the upper plate and the lower plate. , and the side edges of the plate-shaped body were inserted between the upper and lower plates of the support tool, and then concrete was poured onto the plate-shaped body, and at the same time, the protruding part of the support tool was poured. It consists in a method of insulation construction for concrete buildings, which is characterized by embedding it in concrete.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below along with descriptions of the accompanying drawings showing embodiments thereof.

Fig. 1 is a schematic vertical cross-sectional view of the ceiling of a concrete building insulated by the construction method of the present invention, Fig. 2 is a schematic perspective view of the ceiling shown in Fig. FIG. 2 is a cross-sectional side view of an example of a support tool used in the invention construction method.

In the figure, 1 is a support tool for a heat insulating board made of synthetic resin or rubber, 2 is an upper plate constituting the support tool 1, 3 is a lower plate,
Reference numeral 4 denotes a column that connects the upper plate 2 and the lower plate 3 by holding them substantially in parallel at the center thereof, and 5 indicates a column 4 in the upper plate 2.
A protrusion that protrudes upward from near the joint of the two, and the one shown has two protrusions with tapered tips, and these two protrusions move away from each other as they move toward the tips. bent to

Furthermore, one of the two protrusions is longer than the other.

Note that the shape of the number of protrusions is not an essential condition;
It is essential that the protrusion has only a curved part.

6 is a formwork for pouring concrete (usually made from plywood), 7 is a glass wool plate, and 8 is a cloth made of glass fiber (a coarse glass fiber net or mesh may be used).

Ordinary fiber cloth or mesh may also be used.

), 9 is a concrete slab. To explain the procedure for pouring concrete, the figure shows the case of making a ceiling part, and although it is not shown in the figure, the formwork 6 is constructed using multiple supports.
is supported upwards.

On this formwork 6, plate-shaped glass wool 1 is arranged all over.

This plate-shaped glass wool is available in various sizes, and for example, those having a length of 182 cm and a width of 91 cfrL are lined up.

At this time, the support tool 1 is sandwiched between the abutting portions of the plate-like bodies.

That is, the side edge of the plate-shaped glass wool 7 is fitted into the gap between the upper plate 2 and the lower plate 3 of the support tool 1. Therefore, the distance between the upper plate 2 and the lower plate 3 is set according to the plate-shaped plate used. It is preferred that the thickness be substantially the same as the glass wool or somewhat less.

When the interval is slightly smaller than the thickness of the glass wool, leakage of the 7 holes can be more reliably prevented.

As shown in FIG. 2, the support tool 1 is used in the vertical and horizontal directions at the boundary between plate-shaped glass wool.

Then, it is preferable to apply an adhesive tape to the boundary between the side edge of the upper plate 2 and the plate-shaped glass wool 7 to seal it.

This is to more reliably prevent slag from entering through the boundary.

After these operations are completed, reinforcing bars are placed above the upper plate 2 of the support tool 1 at a certain distance (not shown), and then concrete is poured to a desired thickness.

Glass fiber cloth 8 (
The reason for applying mesh (or mesh, cloth or mesh made of natural or synthetic fibers) is as follows.

When arranging the plate-shaped glass wool 1 or arranging reinforcement, a worker walks around on the glass wool 7.

It is simply glass wool pressed into a plate shape.
If a strong force is applied to that surface, that part will be damaged.

However, if a glass fiber cloth (or mesh) is placed on the top surface, no damage will occur.

The protruding part 5 of the support device 1 is embedded in the concrete slab 9 by concrete pouring, and the protruding part 5
Since it has a curved part, it will not fall off even if it is strongly pulled downward, so that the plate-shaped glass wool 7 is firmly joined to the concrete slab 9.

When arranging plate-shaped glass wool 7 or arranging reinforcement,
As described above, the worker walks on the glass wool 7, but may accidentally step on the protrusion 5 of the support tool 1 or rub it with the sole of his shoe.

Synthetic resin or rubber products inevitably have lower strength than metal products, but having a curved part in the protrusion 5 reduces breakage in this case, and also has two protrusions as shown in the figure.
In addition, by making one longer than the other, even if one breaks, the other remains, and can function sufficiently to support the plate-shaped glass wool 7.

The support tool 1 is molded from synthetic resin or rubber, but the material is polyvinyl chloride (polyvinyl chloride has A
Products mixed with BS resin have good impact resistance, which is preferable for dogs)
, polystyrene type (polystyrene, ABS resin, etc.), polyolefin type (polyethylene, polypropylene), polyamide type (nylon resin), polyester type, natural or synthetic rubber, etc. are used, and thermosetting resins such as phenol resin may also be used.

However, from a manufacturing standpoint, the support tool 1 can be manufactured inexpensively by extrusion molding, so extrusion moldable thermoplastic resin or rubber is preferred.

The resin may be soft, semi-hard, or hard. For example, if the upper half is extruded with semi-hard vinyl chloride resin or soft vinyl chloride resin and the remainder is hard vinyl chloride resin, the upper half Since it is elastic, the above-mentioned problem of breakage can be significantly reduced, and it can also be provided with sufficient strength.

FIG. 3 shows this case, where A indicates a soft or semi-hard resin portion and B indicates a hard resin portion.

In order to make this support tool 1, it is advantageous to use extrusion molding using an extruder as described above, and the obtained long extrusion molded product is cut into desired lengths for use.

In addition, when the plate-shaped glass wool is lined up, it is preferable to arrange it along the entire length of the border, but the extrusion molded product of the support tool 1 is cut into pieces shorter than that and arranged at intervals. You may.

According to the heat insulation method of the present invention, a supporting tool made of a specific shape and material (synthetic resin or rubber) is used, so no thermal bridging phenomenon occurs and the heat insulation effect of glass wool is not impaired.

The heat insulating board may also be made of wood wool or expanded polystyrene, and the same effect can be achieved in these cases as well.

Additionally, it is highly durable as it does not suffer from corrosion due to concrete, humidity in the atmosphere, or factory exhaust gas.

In addition, the heat insulating board is sandwiched between the upper and lower boards, and the protrusion with a curved part provided on the support tool is embedded in the concrete slab, so the plate-shaped heat insulating material does not peel off from the concrete slab after construction. There's nothing to do.

Furthermore, since the joints of the heat insulating plates are fitted with support members in the shape of a square, no slag leaks downward.

When using glass wool as a heat insulating board, in addition to its heat insulating and sound absorbing properties, it also has excellent nonflammability, making it suitable for use in high-rise buildings, general residences, offices, warehouses, factories, theaters, and many other places. The construction method of the present invention is extremely useful when constructing buildings where people gather.

It should be noted that what has been explained above and shown in the drawings is related to typical examples to aid understanding of the present invention, and the present invention is not limited to these examples, and may include other examples within the gist of the invention. It is possible to make changes and modifications.

[Brief explanation of drawings]

Fig. 1 is a schematic vertical cross-sectional view of the ceiling of a concrete building insulated by the construction method of the present invention, Fig. 2 is a schematic perspective view of the ceiling shown in Fig. 1 partially cut away, and Fig. 3 is a schematic vertical cross-sectional view of the ceiling of a concrete building insulated by the construction method of the present invention. It is a cross-sectional side view of an example of the support tool used for a construction method. In the figure, 1 is a support tool made of synthetic resin or rubber, 2
1 is an upper plate constituting the support tool 1, 3 is a lower plate, 4 is a support that connects the upper plate 2 and lower plate 3 at approximately the center, 5 is a protrusion provided on the upper part of the upper plate, and 6 is a The formwork, 7 is a glass wool plate, 8 is a cloth (or mesh) made of glass fiber, and 9 is a concrete slab.

Claims (1)

[Claims] 1. Between the boundaries of the plate-shaped heat insulators arranged on the formwork,
A support molded from synthetic resin or rubber, in which an upper plate and a lower plate are supported substantially parallel to each other by pillars at approximately the center thereof, and a protrusion with a curved portion is provided at the upper part of the upper plate. Sandwiching the tool, the side edges of the plate-like body are inserted between the upper and lower plates of the support tool, and then concrete is poured onto the plate-like body, and at the same time, the protrusion of the support tool is inserted. A method of insulation for concrete buildings that is characterized by embedding it in poured concrete. 2. The insulation method for a concrete building according to claim 1, wherein the support tool is an extrusion molded product of synthetic resin or rubber. 3. In the concrete building set forth in claim 1, wherein the upper half of the support tool is made of soft or semi-hard synthetic resin or rubber, and the remaining part is made of hard synthetic resin or rubber. Insulation method. 4. The insulation method for a concrete building according to claim 1, wherein the plate-shaped heat insulating body is made of inorganic fibers, and a cloth or mesh is adhered to the upper surface of the heat insulating body.