JPS6317038A - Composite heat-insulating board material for building - 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] The present invention relates to the improvement of composite insulation board materials for buildings, and is utilized in the industrial field of manufacturing, selling, and using building materials.

[Background technology]

It is well known that in recent years, so-called A, L, C, plates (lightweight aerated concrete plates) are being used in large quantities for the purpose of reducing the weight of buildings, shortening construction periods, and saving energy.
It is also well known that the demand for A, L, C, and board materials has been increasing recently because they are extremely lightweight and have many advantages such as excellent insulation properties and ease of cutting and nailing. It is.

However, since the A, L, C, and board materials contain a large number of air bubbles, their strength is not necessarily satisfactory, and they also lack water resistance and impermeability, so they cannot be used in extremely wet or wet conditions. It is easily permeable to water (therefore, it exhibits excellent heat insulation properties when dry, but has a serious drawback in that its heat insulation properties and strength deteriorate significantly when wet.

Therefore, in order to improve the strength of A, L, C, and plate materials, products have been developed and provided that have internal reinforcing materials such as reinforcing bars and wire mesh, but these reinforcing materials become an obstacle when cutting and nailing. Not only that, but the fragility defects at corners where no reinforcing material is present cannot be improved at all, and adding reinforcing material to the interior is uneconomical because it increases the number of materials and processes.

In addition, methods have been used to improve water resistance and prevent moisture, such as applying waterproof paint or coating with a waterproof film, but it is still not possible to maintain sufficient heat resistance when wet. Nothing is provided.

[Purpose of the invention]

The present invention was invented in view of the above-mentioned background technology, and has a higher bending strength than conventional A, L, C, and plate materials.
The object of the present invention is to provide an extremely useful composite insulation board material for construction that has excellent compressive strength, water resistance, heat insulation properties, workability, etc.

[Disclosure of the invention]

In order to achieve the above object, the composite insulation board material for construction according to the present invention has cement 1
00 parts by weight of asphalt aqueous emulsion 1.
5 to 10 parts by weight is added thereto, and an uncured lightweight mortar mixture prepared by adding the required amount of water, aggregate, and 0.001 to 5 parts by weight of a protein-based air entraining agent, etc. is poured and hardened,
The lightweight mortar mixture layer is integrally formed on a construction board.

In the present invention, the component range of the lightweight mortar mixture is specified to the above ratio for the following reasons:
If the amount of asphalt aqueous emulsion added is less than 1.5 parts by weight relative to 0M parts, the strength of the foam in the product board will be low and the water absorption will be high, making it impossible to obtain satisfactory performance values. Furthermore, it has been found that if the amount exceeds 10 parts by weight, further improvement in performance cannot be expected and costs are increased.

In addition, if the amount of protein air entraining agent added to 100 parts by weight of cement is less than 0.001 parts by weight, the specific gravity of the product board will increase and the insulation properties will decrease, making it impossible to expect the desired performance. Moreover, if it exceeds 5 parts by weight, the specific gravity will decrease and the heat insulation properties will improve, but the strength as a plate material will decrease.
This is because the current research stage has revealed that there is a problem with its strength.

(Example) Approximately 0.7 kg/rrf of cationic filler (mixture of cement and cationic acrylic synthetic resin aqueous emulsion) was applied to plywood with a thickness of 5.5 fl, and then on the applied surface, cationic filler (mixture of cement and cationic acrylic synthetic resin aqueous emulsion) was applied to 100 parts by weight of cement. 90% asphalt emulsion, 10% paraffin emulsion
4 parts by weight of water-repellent asphalt emulsion, 70 parts by weight of fly ash, 50 parts by weight of silica sand No. 7, 0.05 parts by weight of protein-based air entrainment agent, 0 parts by weight of alkali-resistant glass fiber.
．． 01 parts by weight and 60 parts by weight of water were added and thoroughly kneaded, and the uncured lightweight mortar mixture was poured in and cured to obtain a composite insulation board material for construction in which the lightweight mortar mixture was integrally layered on plywood.

The lightweight mortar layer of this composite insulation board for construction and the commercially available A
, L, C, and the comparison test results for plate materials are shown in the following table.

In the present invention, in order to improve the adhesive strength between the upper lightweight mortar layer and the base construction board material, the lightweight mortar mixture may be poured after applying an adhesive to the surface of the base construction board material. Furthermore, if another fire-resistant construction board material such as gypsum board or tile is laminated on the surface of the lightweight mortar mixture layer layered on the base construction board material in the above example, the heat insulation and fire resistance can be further improved. At the same time, the appearance is good, and the construction period can be shortened by saving labor in the process.

〔Effect of the invention〕

As mentioned above, the composite insulation board for construction of the present invention has the characteristics of conventional A, L, and C, due to the unique composition and mixing ratio of the lightweight mortar mixture layered on the base board.

It has superior properties in terms of heat insulation and water resistance compared to board materials, and is also superior in terms of bending strength, compressive strength, workability, etc., so it can produce unparalleled effects as a construction board material. It is.

Furthermore, in the present invention, since a protein-based air entraining agent is used as a means for containing air bubbles, the diameter of the generated air bubbles can be freely changed by adjusting the amount added, stirring time, and stirring speed. It has the great advantage of easily combining the above-mentioned properties, and since all the bubbles generated by the protein-based air communication agent are closed cells, the above-mentioned heat insulation properties and water resistance are further improved. .

Claims (1)

[Claims] 1) Asbestos cement board, gypsum board board, wood chip cement board,
1.5 to 10 parts by weight of asphalt aqueous emulsion is added to 100 parts by weight of cement on construction board materials such as iron plates and plywood, and to this is added the required amount of water, aggregate and 0.001 parts by weight.
A composite insulation board material for construction, which is constructed by pouring and curing an uncured lightweight mortar mixture containing ~5 parts by weight of a protein-based air entraining agent, etc., and integrally forming the above-mentioned lightweight mortar mixture layer on a construction board material. .