建筑石膏(gao)簡介

建筑石(shi)(shi)(shi)(shi)膏(gao)(gao)，是(shi)二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)在一定溫(wen)度下(xia)加熱脫水，并(bing)磨細制成(cheng)的以(yi)β-半水石(shi)(shi)(shi)(shi)膏(gao)(gao)為(wei)主(zhu)要組成(cheng)的氣硬性膠凝材料(liao)。廣泛應用于各類(lei)石(shi)(shi)(shi)(shi)膏(gao)(gao)板、石(shi)(shi)(shi)(shi)膏(gao)(gao)砌塊粉刷石(shi)(shi)(shi)(shi)膏(gao)(gao)、模型(xing)石(shi)(shi)(shi)(shi)膏(gao)(gao)等(deng)石(shi)(shi)(shi)(shi)膏(gao)(gao)制品(pin)。生產(chan)β型(xing)半水石(shi)(shi)(shi)(shi)膏(gao)(gao)的原料(liao)主(zhu)要為(wei)含硫酸鈣的天然(ran)石(shi)(shi)(shi)(shi)膏(gao)(gao)（又稱生石(shi)(shi)(shi)(shi)膏(gao)(gao)）或含硫酸鈣的化工副(fu)產(chan)品(pin)和磷石(shi)(shi)(shi)(shi)膏(gao)(gao)、氟石(shi)(shi)(shi)(shi)膏(gao)(gao)等(deng)廢渣，其化學式為(wei)CaSO4.2H2O，也稱二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)。將二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)在不同的溫(wen)度下(xia)煅燒可得到不同的石(shi)(shi)(shi)(shi)膏(gao)(gao)品(pin)種。如將二(er)水石(shi)(shi)(shi)(shi)膏(gao)(gao)在107~170℃的干燥條件下(xia)加熱可得建筑石(shi)(shi)(shi)(shi)膏(gao)(gao)。