JP2564232Y2 - Lightweight sheet-like protective material for waterproof sheet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame-retardant, lightweight, plate-like protective material for a waterproof sheet in a waterproof structure of a veranda of a general house.

[0002]

2. Description of the Related Art A conventional waterproof structure of a veranda in a general house is constructed by attaching a synthetic resin, rubber or asphalt waterproof sheet on a base made of wood, foam concrete or the like, and then applying the waterproof sheet thereon. A mortar layer having a thickness of 3 to 6 cm is laid to protect the flame retardant.

[0003]

[Problem to be Solved] The method of laying a mortar layer on the waterproof sheet requires a different construction company for the waterproof sheet work and the mortar laying work. In the meantime, it is necessary to mount and protect the panel so that the waterproof sheet is not damaged, and the process is complicated and troublesome. Moreover, since the mortar layer is as heavy as 40 kg or more per m ^2, it is necessary to make the columns of the veranda thick, which is not suitable for a lightweight building. Furthermore, if the waterproof sheet is damaged and water leakage occurs, the entire mortar layer must be destroyed and removed in order to find and repair the water leakage point, and after repairing the damaged part,
The mortar layer must be laid and the repair work is difficult.

In view of the above, in order to shorten the construction period of the waterproofing work and simplify the repair work at the time of water leakage, a method of mortar in a plate shape and laying it on a waterproof sheet is considered. According to this method, it is not necessary to remove the entire mortar layer as in the related art, and the repair work can be performed only by removing the mortar plate in the leaked portion, and after the repair work is completed, the mortar plate only needs to be restored. Therefore, construction work and repair work are easy. However, mortar plate ^30-2 per m
Heavy and 35Kg, is unsuitable for lightweight building, m ² per 20
A weight of about Kg is desired, and a heavy object is not preferable because the surface of the waterproof sheet is worn when the mortar plate is displaced. Therefore, as a lightweight mortar board,
Foaming and mixing of lightweight aggregates are possible. But,
Each of them has a disadvantage that the strength is weak and a foot crack is easily generated.

[0005] The present invention has a thickness of 15 to 20 mm, a light weight of about 20 kg per m ² , and is resistant to tread cracks. Even if it breaks, it does not lose its shape. It is intended to provide a small and lightweight plate-shaped protective material.

[0006]

Means taken by the present invention is to fill a lightweight mortar having a specific gravity of 1 to 1.5 g / cm ³ into a synthetic resin case, and to fill the lightweight mortar with the side of the synthetic resin case. It is reinforced with the bottom, and in order to further prevent the mortar from being released from the synthetic resin case,
The synthetic resin case is formed in an irregular shape so that a flange edge protrudes inside the upper end of the side and the bottom is drained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. A is a lightweight plate-like protective material reinforced with a synthetic resin case 1, and 2 is a lightweight mortar in the synthetic resin case 1.

[0008] The synthetic resin case 1 may have any shape as long as it is a thin box-like shape or a thin, substantially concave cross-sectional shape that can be combined, such as irregular shapes including a square, a rectangle, a rhombus, and any other polygon. A flange edge 12 is provided on the upper end of 11 at a substantially right angle inside the side edge 11. The side edge 11 is a flat surface which is abutted with the adjacent lightweight plate-shaped protective material A, but has an uneven shape for fitting into the flat abutment surface of the side edge 11, for example, one side is concave and the opposite side is concave. A pair or an appropriate number of convex shapes having a smaller diameter or width may be provided diagonally in a curved shape or a straight shape. The bottom side 13 may be flat, but is preferably formed into a groove for draining, or an irregularity 13 'having a rough surface.

The synthetic resin case 1 is made of acrylonitrile / butadiene / styrene copolymer resin, polyvinyl chloride,
It is made by molding thermoplastic resin such as polyester, polyethylene or polypropylene by injection molding or extrusion molding. The dimensions are, for example, the case plate thickness is 0.5 to 2 mm, the side height is 15 to 20 mm, and the size is In other words, the length of one side is an arbitrary thin box, or a predetermined length of 0.5 to 2 mm, a height of 15 to 20 mm, a width of 100 to 300 mm, and a length of 1 m or less. The cut side has a thin, substantially concave cross-sectional shape consisting of two sides, and a flange edge having a width of 2 to 10 mm is provided at the upper end of the side at a substantially right angle inside the side.

A lightweight mortar 2 is filled in the synthetic resin case 1. This lightweight mortar 2 is an inorganic foam obtained by foaming volcanic ash and the like on cement such as ordinary Portland cement and blast furnace cement, and has an apparent specific gravity of 0.3 to 1.0 g / cm 2.
In cm ^3, a particle size less fines lightweight aggregate 1 mm, 0.2 in aggregate cement ratio 0.6, glass fiber, vinylon fiber, 0-5 volumes of short fibers having a fiber length of 5~25mm such as carbon fibers %, A binder such as sand and methylcellulose, a styrene-butadiene emulsion, an epoxy resin, etc. so that the specific gravity of the cured mortar is 1 to 1.3 g / cm ³ .
A slurry made by adding an appropriate amount of water is cast into the synthetic resin case 1 to finish the surface flat, and then cured and cured, and the lightweight mortar reinforced with the synthetic resin case 1 Board 2.

In the case of the case 1 having a substantially concave cross-section having two sides 11, both ends are sealed with a partition plate or the like provided with grooves of the same shape, and then the lightweight mortar 2 is injected and cured. Remove the partition and cure.

In order to improve the adhesion between the synthetic resin case 1 and the lightweight mortar 2, an epoxy resin liquid is applied to the inside of the case 1 and then the surface thereof is covered with inorganic fine particles such as sand having a particle size of 0.3 to 1 mm. The mortar slurry may be cast after sprinkling and fixing glass fiber short fibers to make the inside of the case uneven.

The thus obtained lightweight plate-like protective material A
Weighs 18-22 kg per m ² . As shown in FIG. 3, the lightweight plate-like protective material A is placed on the waterproof sheet D bonded and laid on the upper surface of the base B with the adhesive C.
If necessary, the joint joints may be sealed with a sealing material such as butyl rubber or urethane.

Next, specific embodiments will be described.
1mm thick, 20mm high, 250mm wide, 250mm long,
A case made of acrylonitrile / butadiene / styrene copolymer resin with inner flange of 5mm, ordinary Portland cement: 10
0 parts by weight, Shirasu balloon: 30 parts by weight, sand: 40 parts by weight,
A mortar slurry composed of 3 parts by weight of vinylon fiber (10 mm) and 95 parts by weight of water is cast and cured. The weight of the obtained molded body was 1.2 kg, and the weight per m ² was 19.2 kg.
It is. The molded body was dropped on a concrete floor from a height of 1 m, but there was no breakage such as a crack, and there was no deformation.

[0015]

[Advantageous effects of the present invention the protective material from the specific gravity in the synthetic resin case comprising a lateral and bottom edge is formed by filling the lightweight mortar 1-1.5 g / cm ^3, weight per m ² is 18 ~ 22Kg and light, mortar is reinforced with synthetic resin case, so light but strong, no breakage due to stepping cracks. The upper part of the case has a flange on the inside, so there is no mortar removal from the case,
Furthermore, even if this protective material is rubbed against the surface of the waterproof sheet due to displacement or the like, the surface of the protective sheet is not damaged, and is suitable as a protective material for a waterproof sheet having a waterproof structure on a veranda.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a lightweight plate-like protective material of the present invention.

FIG. 2 is a cross-sectional perspective view of another embodiment.

FIG. 3 is a working example of the present invention.

[Explanation of symbols]

A is a lightweight plate-like protective material, 1 is a synthetic resin case, 11 is a side, 12 is a flange, 13 is a bottom, and 2 is a lightweight mortar.

Claims (3)

(57) [Scope of request for utility model registration] 1. A protective material for a waterproof sheet, wherein a specific gravity of 1 to 1.5 g / g is contained in a synthetic resin case comprising side and bottom sides.
Lightweight shaped protective material formed by filling the lightweight mortar cm ^3. 2. The lightweight plate-like protective material according to claim 1, wherein the synthetic resin case has a box shape, a flange edge protrudes inside the upper end of the side, and a bottom side is formed in an uneven shape. 3. A synthetic resin case is formed to have a substantially concave cross-section having two sides, and a flange is formed at an inner side of an upper end of the side so as to project substantially at right angles to the side. The lightweight plate-like protective material according to claim 1, wherein the protective material is formed in a shape.