Calcium silicate bonded with sodium silicate. Although it is popularly considered an asbestos substitute, early uses of calcium silicate for insulation still made use of asbestos fibers. It is used in passive fire protection and fireproofing as calcium silicate brick or in roof tiles. It is one of the most successful materials in fireproofing in Europe because of regulations and fire safety guidelines for commercial and residential building codes (see Calcium Silicate use in Europe). Where North Americans use spray fireproofing plasters, Europeans are more likely to use cladding made of calcium silicate. High-performance calcium-silicate boards retain their excellent dimensional stability even
Building insulation materials cannot satisfy people’s long-term need for thermal insulation.so, people began to search for substitutes which are more durable. In the 19th century, people are no longer satisfied with using natural materials for thermal insulation, they processed the organic materials and produced the first insulated panels. At the same time, more and more artificial materials start to emerge, a large range of artificial thermal insulation materials were developed, rock wool, fiberglass, foam glass, hollow bricks. Thermal insulation can be a significant role in the building, great demands of thermal comfort result in a large amount of energy consumed for full-heating