建筑石膏簡(jian)介

建(jian)筑石(shi)(shi)(shi)膏(gao)(gao)，是(shi)二水(shui)(shui)石(shi)(shi)(shi)膏(gao)(gao)在(zai)一定溫度下(xia)加熱脫水(shui)(shui)，并磨細制成的以β-半水(shui)(shui)石(shi)(shi)(shi)膏(gao)(gao)為(wei)(wei)(wei)主要組(zu)成的氣硬(ying)性膠凝材(cai)料。廣泛應用于各類(lei)石(shi)(shi)(shi)膏(gao)(gao)板、石(shi)(shi)(shi)膏(gao)(gao)砌塊(kuai)粉(fen)刷石(shi)(shi)(shi)膏(gao)(gao)、模型石(shi)(shi)(shi)膏(gao)(gao)等石(shi)(shi)(shi)膏(gao)(gao)制品。生產β型半水(shui)(shui)石(shi)(shi)(shi)膏(gao)(gao)的原料主要為(wei)(wei)(wei)含硫(liu)酸鈣(gai)的天然石(shi)(shi)(shi)膏(gao)(gao)（又稱生石(shi)(shi)(shi)膏(gao)(gao)）或含硫(liu)酸鈣(gai)的化工副產品和磷石(shi)(shi)(shi)膏(gao)(gao)、氟石(shi)(shi)(shi)膏(gao)(gao)等廢渣，其化學式為(wei)(wei)(wei)CaSO4.2H2O，也稱二水(shui)(shui)石(shi)(shi)(shi)膏(gao)(gao)。將二水(shui)(shui)石(shi)(shi)(shi)膏(gao)(gao)在(zai)不同的溫度下(xia)煅燒可得(de)到不同的石(shi)(shi)(shi)膏(gao)(gao)品種。如(ru)將二水(shui)(shui)石(shi)(shi)(shi)膏(gao)(gao)在(zai)107~170℃的干燥條件下(xia)加熱可得(de)建(jian)筑石(shi)(shi)(shi)膏(gao)(gao)。