| 摘要 |
<p>Prefabricated, composite building material consists of a body, such as a plate or block of gas concrete, which may be provided with a metal reinforcement, at least a part of the external surface of the body being covered with an elastomer film which is bonded to the body. Used for constructing the walls and roofs of buildings. The material is waterproof, thermally and acoustically insulating, and has a low weight.</p> |
