In 1992, the international academic circles clearly defined green materials: green materials are materials that minimize the environmental load on the earth and are beneficial to human health, including the adoption of raw materials, the manufacture, use or recycling of products, the disposal of wastes, etc., and are also called "environmentally harmonious materials". Green building materials are a major category of green materials.
Broadly speaking, green building materials are not a single variety of building materials, but an evaluation of the "health, environmental protection and safety" properties of building materials, including the sub-item evaluation and comprehensive evaluation of five links: production raw materials, production technology, construction process, use process and waste disposal.
The basic functions of green building materials are not only the basic practicability as building materials, but also the maintenance of human health and environmental protection. Compared with traditional building materials, the basic characteristics of green building materials can be summarized as follows:
(1) the raw materials used in its production use natural resources as little as possible, and a large number of wastes such as tailings, waste residue, garbage and waste liquid are used.
(2) Adopt low energy consumption manufacturing technology and production technology that does not pollute the environment.
(3) In the process of product preparation or production, formaldehyde, halide solvents or aromatic products shall not contain mercury and its compounds, and pigments and additives containing lead, fluorine, chromium and their compounds shall not be used.
④ The design of the product aims at improving the living environment and improving the quality of the original sound, that is, the product is not only harmless to human health, but also beneficial to human health. This product has many functions, such as antibacterial, sterilization, antifogging, deodorization, heat insulation, flame retardant, fire prevention, temperature regulation, noise elimination, degaussing, radiation protection, antistatic and so on.
⑤ The product can be recycled or reused, and there is no environmental waste.
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