How many types of building materials can be classified?
There are three main categories: structural materials, decorative materials, and special materials, and these three categories contain several subcategories. For example, structural materials include wood, bamboo, stone, cement, concrete, metal, brick, ceramics. , glass, engineering plastics, composite materials, etc.; decorative materials include a variety of paints, paints, coatings, veneers, colored tiles, glass with special effects; special materials for waterproof, moisture, corrosion, fire, flame retardant, Sound insulation, heat insulation, insulation, sealing, etc.