JPS61270448A - Protective block - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a protective block laid on a roof slab of a concrete building. The present invention also relates to a protective block capable of providing excellent protection and restraint to a waterproof layer.

Technical background of the issue and its problems Traditionally, rooftop insulation has been applied to the roof slabs of concrete buildings in order to protect the roof slabs from direct sunlight and provide a stable indoor environment inside the buildings. A structure is provided.

As such rooftop insulation structures, structures have been used in which a heat insulating material such as expanded polystyrene is provided below a concrete slab, and a waterproof layer such as asphalt is provided on the concrete slab.

However, with this structure, since the waterproof layer is exposed to the outside, the surface of the waterproof layer is easily deteriorated by heat due to exposure to direct sunlight, and cracks are likely to occur due to expansion and contraction due to large temperature changes. Moreover, there was a problem in that localized condensation was likely to occur on metal fittings such as hanging bolts that penetrated the insulation material.

To solve these problems, a rooftop insulation structure is used in which a protective block consisting of a waterproof layer on a concrete slab and a protective block consisting of a heat insulating material and a retaining layer made of cement is placed on top of the waterproof layer. It's starting to look like this. In this structure, since the heat insulating material is provided under the concrete slab, the temperature of the slab is lowered, and therefore the strain due to expansion and contraction of the concrete frame can be reduced, and cracking of the concrete frame can be prevented. Furthermore, since the heat insulating material is provided above the waterproof layer, temperature changes in the waterproof layer can be reduced over the year, and there is also the advantage that deterioration of the waterproof layer due to solar heat, ultraviolet rays, etc. can be prevented. In this rooftop insulation structure, the holding layer of protective blocks protects the waterproof layer and insulation from strong winds, and
It also protects the waterproof layer and insulation from mechanical damage in case of rooftop use.

Although the rooftop insulation structure of the above structure has excellent properties, the holding layer of the protective block, which is a cement product, is exposed to direct sunlight, so heat accumulates in the holding layer of the protective block. There was a problem in that the cement products forming the presser layer were likely to deteriorate due to high temperatures. Furthermore, since this presser layer is made of cement, once it reaches a high temperature, it is difficult to lower the temperature, which is not necessarily advantageous in terms of insulation.

In order to solve the above-mentioned problems, the present inventor formed a ventilation hole inside the pressing layer of the protective block, and the end of the ventilation hole was opened so as to face the top surface of the protective block. proposed a protection block. Although this protective block has excellent performance, there is a risk of dust entering the ventilation hole, and once dust enters the ventilation hole, it is difficult to clean, and there is a risk that noise may be generated when strong wind hits the protective block. There was also. Moreover, this protective block is not always easy to manufacture and has the disadvantages of some time.

The present invention is an attempt to solve the problems associated with the prior art as described above, and is to provide a protective layer consisting of a heat insulating material and a pressing layer made of cement provided on top of the heat insulating material. By increasing the heat dissipation of the block presser layer, heat will not accumulate even if the presser layer is exposed to direct sunlight, and therefore the presser layer and insulation material will not deteriorate rapidly due to high temperatures.
Furthermore, the object of the present invention is to provide a protective block for a rooftop insulation structure, which quickly lowers the temperature even once it reaches a high temperature, and is advantageous in terms of insulation of buildings.

Another object of the present invention is to provide a protective block that is easy to clean, does not generate noise even when exposed to strong winds, and is easy to manufacture.

R plate 11 The protection block according to the present invention is laid on a waterproof layer provided on a concrete roof slab, and this protection block includes a heat insulating material made of foamed plastic and a heat insulating material provided on this. The holding layer is characterized by having a recessed portion having a specific width and depth on its surface.

The pressing layer of the protective block according to the present invention has recesses of a specific shape formed on the surface, so that heat dissipation is enhanced.
It effectively prevents high temperatures even when exposed to direct sunlight, thus preventing the pressing layer and insulation material of the protective block from deteriorating due to heat, and effectively achieving thermal insulation of the building. .

Furthermore, the protective block according to the present invention is easy to clean, does not generate noise even when exposed to strong winds, and is easy to manufacture.

Detailed description of the invention The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 is a schematic explanatory diagram of a rooftop insulation structure including a protection block 1 according to the present invention, FIG. 2 is a perspective view of the protection block 1 according to the present invention, and FIG. 3 is a protection block according to the present invention. 4A and 4B are cross-sectional views showing another embodiment of the recess provided on the surface of the pressing layer of the protection block according to the present invention; FIGS. FIG. 5 is a plan view of the protection block showing the second
FIG. 6 is a cross-sectional view of the metal fittings used to connect the protective blocks; FIG. 7 is a cross-sectional view showing the connected state of the protective blocks; FIG. I'll go.

The protection block for the rooftop insulation material according to the present invention has a substantially square shape, as shown in FIG. 1, for example, and is laid on a waterproof layer 3 provided on a concrete roof slab 2, Consisting of a heat insulating material 4 and a pressing layer 1 provided thereon, a plurality of protective blocks are provided so as to be in contact with each other via connecting fittings 5. Number 6 in the diagram is a special curb block. Note that, if necessary, a foamed plastic layer 14 called a leveler may be provided between the waterproof layer 3 and the heat insulating material 4 of the protective block.

The pressing layer 1 of such a protective block is made of the above-mentioned heat insulating material 4.
It plays the role of protecting the insulation material 4 and the waterproof layer 3 from direct sunlight, heat, strong winds, moisture, etc., and also protects the insulation material 4 and the waterproof layer 3 from mechanical damage when people walk on the rooftop. ing.

A perspective view of such a protective block is shown in FIG. 2, and the surface of the pressing layer 1 of this protective block has a recess 7
is formed almost on the entire surface, and this recess 7 has a width of 5 to 5.
It is 25 mm and the depth is about 10 to 30 mm. In addition to the shape shown in FIG. 2, the recess 7 may have a shape that becomes narrower toward the tip, as shown in the sectional view of the recess in FIG. 3, and the bottom of the recess may be chamfered. It may have a rounded shape.

Note that although the surface of the presser layer 1 of the conventionally known protective block was also provided with an uneven pattern, this uneven pattern was merely a decorative pattern, and the recessed portions were shallow and wide. It is quite different from a recess in terms of depth and width. Therefore, the uneven pattern of the conventionally known protection block cannot be expected to improve the heat dissipation effect much.

As described above, a plurality of protective blocks are laid on the waterproof layer 3 so that they are in contact with each other through the connecting fittings 5.
A step 8 for attaching the connecting fitting 5 to the protective block 1 is provided at the corner of the upper surface of the pressing layer 1 of the protective block. Also, a step 9 for attaching the connecting fitting 5 is provided at the corner of the lower surface of the heat insulating material 4 laminated on the bottom of the presser layer 1.

As the cross-sectional view of the connecting fitting 5 is shown in FIG. 5, an upper plate 10a and a lower plate 10b are connected to each other by a connecting rod 11. The protective blocks 1 are attached through the screws 12 (=I).Then, as shown in FIG.
The heat insulating material 4 is sandwiched and connected between the upper plates 10a and 10b of the connecting fitting 5.

In the above explanation, since the protective blocks were laid on the waterproof layer 3 so as to be in contact with each other via the connecting fittings 5, the stepped portions 8 and 9 were formed at the upper and lower corners of the protective blocks, respectively. However, the connection of the protection blocks is not limited to the method using the connection fittings 5 described above.

When the protective blocks are not connected via the connecting fittings 5, it is not necessary to provide the stepped portions 8 at the corners of the upper surface of the protective block 1 and the stepped portions 9 at the corners of the lower surface of the protective block 1.

Note that a groove 13 is provided on the lower surface of the heat insulating material 4 of the protection block, as shown in FIG. 5, and the existence of this groove 13 can reduce the water absorption of the heat insulating material 4. However, it is not necessary to provide the groove 13 on the lower surface of the heat insulating material 4.

The holding layer 1 of the protective block having such a concave portion 7 on its surface is nonflammable and requires a certain weight or more in order to protect the waterproof layer and the heat insulating material from strong winds.
Preferably, it is a cement product using sand as aggregate. This holding layer 1 can be manufactured by extrusion using cement containing sand as an aggregate and, if necessary, a binder such as a vinyl acetate emulsion. Alternatively, using cement containing sand as aggregate, mold pouring method (
It is also possible to make ¥A by using the CaSt incJ method).

When manufacturing the presser layer 1 using this pouring method, a dense product with excellent strength can be obtained by pouring cement into a mold and then photographing it.

Since the holding layer 1 of the protective block has a concave portion 7 on its surface, there is a concern that the mechanical strength will be poor, but it is possible to stretch a metal wire such as a piano wire inside the block 1, or Sufficient mechanical strength can be imparted to the presser layer 1 by incorporating an alkali-resistant glass net or chopped strands or by using reinforcing fibers such as carbon fibers and steel fibers.

As the waterproofing layer 3 and the heat insulating material 4, a wide variety of conventionally known materials can be used, but for reference, the waterproofing layer 3 can be made of asphalt, synthetic rubber, or synthetic polymer roof ink made mainly of synthetic resin. As the heat insulating material 4, foamed plastics with low water absorption, such as polystyrene, foamed polyethylene, foamed polypropylene, or foamed polyurethane whose water absorption is reduced by surface treatment, are used.

Next, the operation of the protection block according to the present invention will be explained.

The protection block according to the present invention is laid on a waterproof layer 3 provided on a concrete roof slab 2, and has a heat insulating material 4.
Since it is composed of a presser layer 1 provided on the roof and a presser layer 1, the presser layer 1 is exposed on the rooftop surface and receives direct sunlight. However, even if the temperature of the pressing layer 1 rises due to exposure to direct sunlight, many recesses 7 will appear on the surface of the pressing layer 1.
is provided, so that the heat radiation area is larger than the heat receiving area. As a result, the heat accumulated inside the presser layer 1 is efficiently dissipated, heat is not accumulated inside the presser layer 1, and the temperature of the presser layer 1 is prevented from becoming abnormally high. Therefore, the cement product forming the pressing layer 1 is prevented from deteriorating due to heat.
Furthermore, the surface of the heat insulating material is prevented from becoming abnormally high temperature, thereby preventing deterioration of the heat insulating material and providing a stable indoor environment inside the building.

In addition, the protective block 1 according to the present invention is easier to clean than a protective block having a presser layer with ventilation holes inside, and there is no risk of making noise even when hit by strong winds. Moreover, since the structure is simple, manufacturing is easy.

The protective block according to the present invention is composed of a heat insulating material and a pressing layer provided thereon, and this pressing layer has a recessed part of a specific shape on its surface, so that it has the following effects. is obtained.

(a) Even if the presser layer of the protective block is exposed to direct sunlight, the surface of the presser layer has concave portions to increase the heat dissipation area, so the inside of the presser layer will not reach an abnormally high temperature. Heat-induced deterioration of the layer is prevented.

(b) As mentioned above, since the holding layer of the protective block does not reach abnormally high temperatures, thermal deterioration of the heat insulating material provided in contact with this holding layer is prevented, and the heat insulating material is even more effective. This provides a good insulation effect and provides a stable environment for buildings.

(C) Compared to a protective block that has a presser layer with ventilation holes inside, it is easier to clean, there is no risk of making noise even in strong winds, and the structure is simple, making it easy to manufacture. be.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a rooftop insulation structure including a protective block according to the present invention, FIG. 2 is a perspective view of the protective block according to the present invention, and FIG. FIG. 7 is a sectional view showing another example of a recess provided;
4(a) and 4(b) are plan views of a protective block showing another embodiment of the recess provided on the surface of the pressing layer of the protective block according to the present invention, and FIG. 5 is a plan view of the protective block not shown in FIG. This is a cross-sectional view taken along the I-4' line of the protective block, and FIG. 6 is a cross-sectional view of the connecting fittings used when connecting the protective blocks, and FIG. 7 is a cross-sectional view showing the connected state of the protective blocks. It is a diagram. DESCRIPTION OF SYMBOLS 1... Pressing layer, 2... Roof slab, 3... Waterproof layer, 4... Heat insulating material, 5... Connecting metal fittings, 7... Ventilation hole, 8... Step part, 9 ...Danbe. Agent Patent Attorney Shun Suzuki - Department Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] This protective block is laid on a waterproof layer provided on a roof slab, and this protective block consists of a heat insulating material made of foamed plastic and a pressing layer provided on top of this. The width is 5-25mm and the depth is 10mm.
A protective block characterized in that it has a recess that is ~30 mm.