建筑石膏(gao)簡介(jie)

建(jian)筑石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)，是二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)在一定(ding)溫度下(xia)(xia)加熱脫水，并磨細(xi)制成(cheng)的以β-半水石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)為主要(yao)組(zu)成(cheng)的氣硬性膠凝材(cai)料。廣泛應用于各類石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)板、石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)砌(qi)塊粉刷石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)、模型石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)等石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)制品(pin)。生產β型半水石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)的原(yuan)料主要(yao)為含(han)硫(liu)酸鈣的天然(ran)石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)（又稱(cheng)(cheng)生石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)）或含(han)硫(liu)酸鈣的化工副產品(pin)和磷石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)、氟石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)等廢渣，其化學式為CaSO4.2H2O，也稱(cheng)(cheng)二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)。將二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)在不(bu)同(tong)的溫度下(xia)(xia)煅燒可(ke)得到不(bu)同(tong)的石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)品(pin)種(zhong)。如將二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)在107~170℃的干燥條件下(xia)(xia)加熱可(ke)得建(jian)筑石(shi)(shi)(shi)(shi)膏(gao)(gao)(gao)(gao)。