建(jian)筑石膏簡介

建筑石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)，是二(er)水石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)在一定溫度下加熱(re)脫水，并磨(mo)細制成(cheng)的(de)(de)(de)以β-半水石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)為主要組成(cheng)的(de)(de)(de)氣硬性膠(jiao)凝(ning)材料。廣泛(fan)應用于各類(lei)石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)板、石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)砌塊粉(fen)刷石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)、模(mo)型(xing)石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)等石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)制品(pin)。生(sheng)產β型(xing)半水石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)的(de)(de)(de)原料主要為含硫酸鈣的(de)(de)(de)天然石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)（又稱生(sheng)石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)）或含硫酸鈣的(de)(de)(de)化(hua)工(gong)副產品(pin)和磷石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)、氟(fu)石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)等廢渣，其化(hua)學式為CaSO4.2H2O，也稱二(er)水石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)。將二(er)水石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)在不同(tong)的(de)(de)(de)溫度下煅燒(shao)可(ke)得到不同(tong)的(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)品(pin)種。如將二(er)水石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)在107~170℃的(de)(de)(de)干燥條件(jian)下加熱(re)可(ke)得建筑石(shi)(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)。