建筑石膏簡介

建筑(zhu)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)，是二水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)在一定(ding)溫(wen)度(du)下加(jia)熱(re)脫水(shui)，并磨細制成的以β-半(ban)水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)為主(zhu)要組成的氣硬性膠凝材料。廣(guang)泛應用于各類石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)板、石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)砌塊粉刷石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)、模型(xing)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)等石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)制品(pin)。生產(chan)β型(xing)半(ban)水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)的原料主(zhu)要為含硫酸鈣(gai)的天(tian)然石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)（又(you)稱生石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)）或含硫酸鈣(gai)的化工(gong)副產(chan)品(pin)和磷石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)、氟石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)等廢渣，其(qi)化學式為CaSO4.2H2O，也稱二水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)。將(jiang)二水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)在不同的溫(wen)度(du)下煅燒可得到不同的石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)品(pin)種。如將(jiang)二水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)在107~170℃的干(gan)燥條件下加(jia)熱(re)可得建筑(zhu)石(shi)(shi)(shi)(shi)(shi)膏(gao)(gao)。