building materials

Building materials are various materials used in construction projects. There are many types of building materials, which can be roughly divided into: (1) Inorganic materials, which include metal materials (including ferrous metal materials and non-ferrous metal materials) and non-metal materials (such as natural stone, burnt earth products, cement, concrete and silicate products) Wait). (2) Organic materials, which include plant-based materials, synthetic polymer materials (including plastics, coatings, adhesives) and asphalt materials. (3) Composite materials, including asphalt concrete, polymer concrete, etc., are generally composed of inorganic non-metallic materials and organic materials.