建筑石膏(gao)簡(jian)介

建筑石(shi)(shi)(shi)膏(gao)，是二(er)(er)水(shui)(shui)(shui)石(shi)(shi)(shi)膏(gao)在(zai)(zai)一定溫度下加(jia)熱(re)脫水(shui)(shui)(shui)，并磨細制(zhi)成的(de)以β-半水(shui)(shui)(shui)石(shi)(shi)(shi)膏(gao)為(wei)主(zhu)要(yao)組成的(de)氣硬(ying)性膠凝材料。廣泛(fan)應用于各類石(shi)(shi)(shi)膏(gao)板、石(shi)(shi)(shi)膏(gao)砌塊粉刷(shua)石(shi)(shi)(shi)膏(gao)、模型(xing)石(shi)(shi)(shi)膏(gao)等(deng)石(shi)(shi)(shi)膏(gao)制(zhi)品(pin)。生產(chan)β型(xing)半水(shui)(shui)(shui)石(shi)(shi)(shi)膏(gao)的(de)原(yuan)料主(zhu)要(yao)為(wei)含(han)(han)硫酸(suan)鈣的(de)天然石(shi)(shi)(shi)膏(gao)（又稱(cheng)生石(shi)(shi)(shi)膏(gao)）或含(han)(han)硫酸(suan)鈣的(de)化工副產(chan)品(pin)和磷石(shi)(shi)(shi)膏(gao)、氟石(shi)(shi)(shi)膏(gao)等(deng)廢渣，其化學式為(wei)CaSO4.2H2O，也稱(cheng)二(er)(er)水(shui)(shui)(shui)石(shi)(shi)(shi)膏(gao)。將(jiang)(jiang)二(er)(er)水(shui)(shui)(shui)石(shi)(shi)(shi)膏(gao)在(zai)(zai)不(bu)同(tong)的(de)溫度下煅燒(shao)可得到不(bu)同(tong)的(de)石(shi)(shi)(shi)膏(gao)品(pin)種。如將(jiang)(jiang)二(er)(er)水(shui)(shui)(shui)石(shi)(shi)(shi)膏(gao)在(zai)(zai)107~170℃的(de)干燥條件下加(jia)熱(re)可得建筑石(shi)(shi)(shi)膏(gao)。