To recycle waste by mixing incineration carbides of combustible waste into waste paper or ground sand of china and porcelain and forming sheets and blocks for civil engineering and building construction.

Incineration carbides of combustible waste and an adhesive are mixed with waste paper dissolved in water and kneaded together, and then the mixture is poured in a molding form to dry and solidify it and form a sheet material 1 or a block having a required shape. Or the incineration carbides and cement are mixed in ground sand of glass or china and porcelain. After kneading, it is poured in a molding form to solidify it and obtain a block, a decoration, or the like having a required shape. In this way, when the sheet material is used as wall paper, it improves fire resistance and serves for deodorization, moisture adjustment, air cleaning, electromagnetic wave shielding, etc. When it is not necessary, it can be reused for activated carbide or a soil conditioner by oxygen-free incineration. Further, if the blocks are used for a refuse collecting area or a livestock pen, an excellent deodorizing effect can be obtained, moreover, when it is disposed of, it can be used as a roadbed material by crushing and mixing with soil.