Green Energy-saving Recycling Gypsum Building Materials To Build Environmental Protection Buildings

Gypsum building materials, as a recognized environmental building materials, have attracted more and more attention.  Its application scope in construction is also gradually expanded with the support of scientific and technological forces.  Gypsum can be found in everything from complex high-tech content systems to small parts convenient for the public to use and install.  Gypsum is helping people build more and better environmentally friendly buildings in its own right.  Gypsum has good fire resistance, effectively ensure the safety of the building.  Gypsum belongs to the inorganic material, has the incombustibility.  The final hydration product, calcium sulfate dihydrate, contains two crystalline waters and its decomposition temperature ranges from about 1070 degrees Celsius to 1700 degrees Celsius.  Therefore, when the fire, only until the two crystal water decomposition completed, the temperature can continue to rise on the basis of about 1000 degrees Celsius;  And in its decomposition process produced a large number of water vapor can also play a barrier to the spread of flame.  As early as 9000 BC, gypsum could be processed into gypsum paste and alabaster for construction and decoration.  Gypsum paste is found in underground frescoes at the Katayuyuk site in Asia.  Gypsum slurry has also been found in a self-leveling layer of gypsum base surface formed in 7000 BC in Israel.  It has been found that gypsum was used as mud to build the pyramid of Tsiapus (3000 BC) during the reign of the Egyptian Pharaohs.