JPH0440503B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a construction panel useful as an exterior wall material or a partition wall, and particularly to one using an asbestos-cement extrusion board. An asbestos cement extrusion board is a hollow-shaped panel obtained by extrusion molding a mixture material whose main raw materials are cement and asbestos. Conventionally, the hollow part of such an asbestos cement extrusion board is filled with rock wool. , those with improved fire protection and fire resistance are being considered. However, such items filled with rock wool increase in weight, and since rock wool has high hygroscopic and water absorbing properties, moisture-proof and waterproof management is required. It has the disadvantage of poor workability. The present invention has been made with the aim of eliminating such conventional drawbacks and providing a construction panel with excellent fireproofing and fire resistance. When filling the cavity of a hollow asbestos cement extrusion molded plate obtained by extrusion molding the mixed material of It is characterized by being covered with a water-repellent covering material. Hereinafter, the structure of the present invention will be explained based on the illustrated embodiment. In the figure, 1 is hollow-shaped asbestos obtained by extruding a mixture material whose main raw materials are cement and asbestos using an extrusion molding machine. It is a cement extrusion molded plate, and a plurality of parallel cavities 2, 2, . . . are formed passing through it in the vertical direction. Further, a vertical projection 3 is formed at one end of the asbestos cement extrusion molded plate 1 in the left and right sides, and a groove 4 having the same shape as the projection 3 is formed at the other end.
Alternatively, the grooves 4 and the grooves 4 or protrusions 3 on another asbestos cement extrusion plate are fitted together and joined together. As shown in FIG. 2, the extruded asbestos cement plate 1 thus formed is filled with an inorganic foam 5 at both ends of the cavities 2, 2, to form the architectural panel of the present invention. It's something you get. As such an inorganic foam 5, for example,
Examples include the above-mentioned magnesia cement foam, clay foam, foam glass, and water glass foam. Among these, magnesia cement foam is obtained by adding a blowing agent to magnesium oxychloride produced from magnesium oxide, magnesium chloride, and water, molding and drying, and its characteristics are shown in the table below.

[Table] Clay foam is obtained by chemically treating aluminosilicate minerals and molding and drying beads with a cellular structure using an inorganic binder. , is a pumice-like heat insulating material made by foaming a glassy raw material using a special foaming material. Further, the filling of the inorganic foam 5 is carried out by filling the hollow parts 2, 2, . . . with a slurry containing a foaming material and drying it. Next, the end surfaces of the openings of the cavities 2, 2, filled with the inorganic foams 5, 5, .
As this covering material 6, for example, a polymeric material,
Examples include non-woven fabric, cement, galvanized iron plate, etc. The architectural panel of the present invention obtained as described above is most suitable as an exterior wall panel, a partition wall, and a flooring material. As described above, according to the present invention, magnesia cement foam, clay foam, etc. Since it is filled with inorganic foam, the inorganic foam filled in the cavity provides fire resistance,
Soundproofing and noise insulation properties are improved, and when such panels are used as flooring materials, improved vibration damping properties have a beneficial effect. Furthermore, such inorganic foam is lighter than rock wool, and unlike the case of filling with fibrous materials such as rock wool, it is only necessary to inject a slurry and dry it, so rock wool can be used as an inorganic foam. It is lighter in weight than other filling materials and has good workability during filling. Furthermore, since such an inorganic foam has better moisture-proofing and waterproofing properties than rock wool, it is easy to manage moisture-proofing and waterproofing. Moreover, in this regard, since the end face of the opening of the cavity is covered with a water-repellent covering material, it is effective to prevent moisture from entering the inorganic foam part, making moisture-proofing and waterproofing management easier. be. In addition, if a cement-based material, which is similar to the asbestos-cement extruded board as the base material, is used as the inorganic foam,
The bond with the base material becomes strong, resulting in a product with high strength.

[Brief explanation of drawings]

Figure 1 is a perspective view of the construction panel of the present invention, Figure 2 is a perspective view of the construction panel of the present invention;
The figure is a partially cutaway front view. 1... Asbestos cement extrusion molded plate, 2... Cavity, 3... Inorganic foam, 6... Covering material.

Claims (1)

[Claims] 1 Filling the cavity of a hollow asbestos-cement extrusion plate obtained by extruding a mixture material mainly composed of asbestos and cement with an inorganic foam such as magnesia cement foam or clay foam, A construction panel characterized in that an end face of the opening of the cavity is covered with a water-repellent covering material.