1. The chemical composition of building materials can be divided into three categories: organic materials, inorganic materials and composite materials:

    Inorganic materials: metallic materials: ferrous metals: steel, iron, stainless steel, etc.

    Nonferrous metals: aluminum, copper and other alloys.

    Non-metallic materials: natural stone: granite, marble, limestone, etc.

    Baked goods: brick, tile, ceramic, glass, etc.

    Inorganic cementing materials: gypsum, lime, cement, water glass, etc., mortar, concrete and silicic acid test products.

    Organic materials: plant materials: wood, bamboo, etc.

    Bituminous material: asphalt, coal tar, asphalt products.

    Polymer material: plastic, paint, adhesive, synthetic rubber.

    Composite material: metal and inorganic nonmetal composite as steel fiber reinforced concrete.

    Organic and inorganic non-metal composite as polymer concrete, asphalt concrete, glass, etc.

    Metal and organic compound a lightweight metal sandwich plate.

2. According to the functions in the building, it is divided into load-bearing and non-load-bearing materials, thermal insulation and insulation materials, sound absorption and sound insulation materials, waterproof materials, decorative materials, etc.

3. It is divided into structural materials, wall materials, roofing materials, ground materials, decorative materials, and other materials.