Cement polystyrene foam sandwich panel
DATE：2021/12/15 9:44:05 / READ： / SOURCE：This station
Cement polystyrene foam sandwich panel
② There is a cement-polystyrene foam sandwich panel whose cement layer is reinforced with alkali-resistant glass fiber mesh. It is made of self-extinguishing polystyrene foam board as the core board, special cement mortar (low-alkali cement mortar) as the base material, and alkali-resistant glass fiber mesh as the surface reinforcement layer, which is formed and cured. Its density is 200～300kg/m3, and it can be used as external wall insulation board, external wall internal insulation board, roof insulation board, etc. It can be directly bonded with concrete, cement, hollow block and other walls during construction. Since this board is dry construction, it can be finished immediately after construction.
③The cement layer of another kind of cement polystyrene foam sandwich panel is made of glass fiber reinforced cement. This kind of panel is also called "GRC sandwich composite panel". It is formed by spraying method and can be made into plate-shaped and other shaped products. It has the advantages of light weight, high strength, good performance, waterproof, crack resistance, and low price. In recent years, GRC has been widely used in foreign countries and developed rapidly in China. GRC sandwich panels also use expanded perlite as an insulation layer. The "GRC external thermal insulation board" uses polystyrene foam as the core, and the outer layer is a GRC sandwich composite board. When in use, it is spread and hung on the already-built external wall, and the joints of the board are filled with polyethylene foam and hooked with anti-cracking mortar.
④There is also a "BT type prefabricated board" with a similar structure, which is specially used for external thermal insulation of external walls.
It uses ordinary cement mortar as the base material and is prefabricated into a box-shaped steel skeleton structure with galvanized wire mesh and steel reinforced small plates, and a flame-retardant EPS board insulation layer with a thickness of 40-50mm (Beijing area) is compounded on it Inside, it not only meets the heat preservation and energy saving index, but also has excellent mechanical properties. "BT type prefabricated external wall thermal insulation and energy-saving board (with decorative surface)" is abbreviated as BT board. It is easy to obtain materials and low in cost. It can be prefabricated into various decorative panels as needed. It is formed at one time and saves labor and time. Used in many residential projects.
Author：admin