碱磷渣加气混凝土的微观形貌及水化产物  

Micro-morphology and Hydration Products of Alkali-activated Phosphorus Slag Aerated Concrete

作　　者：漆贵海[1,2] 彭小芹 王玉麟 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]贵州中建建筑科研设计院有限公司,贵州贵阳550006

出　　处：《湖南大学学报（自然科学版）》2014年第2期114-118,共5页Journal of Hunan University:Natural Sciences

基　　金：'十二五'国家科技支撑计划课题(2011BAJ03B10);贵州省重大科技专项(黔科合重大专项字[2012]6024号);贵州省科技厅项目(黔科合社G字[2011]4002)

摘　　要：实验以碱激发磷渣活性的方式制备免蒸压加气混凝土，研究测试了加气混凝土的孔隙率并对孔隙进行了微观形貌分析，运用XRD，SEM，DSC—TG和FTIR等测试方法分析了碱激发免蒸压磷渣加气混凝土的水化产物．分析结果表明：表观密度500～800kg／m^3的加气混凝土孔隙率在66．79％～77．06％之间，孔隙呈椭圆形，大小比较均匀，相互联通的孔隙较少，孔径大小在0．5～1．5mm之间．碱磷渣加气混凝土的水化产物主要有水化硅酸钙凝胶、白钙沸石和水化硅铝酸钙，部分水化产物碳化生成了CaCO3．Non-autoclave aerated concrete was prepared with phosphorous slag with alkali-activator. The porosity and micro-morphology of the aerated concrete pore were analyzed, and XRD, SEM, DSC-TG and FTIR analysis were used to investigate the microstructures and hydration products of non-autoclave a-erated concrete. The porosity of the non-autoclave aerated concrete with a bulk density of 500-800 kg/m^2 is 66.79%-77.06%. The pore is elliptical and sealed, and the size of most pores is about 0.5-1.5 mm. The major hydration products of the aerated concrete are calcium silicate hydrate gel, gyrolite and hydrated calcium alumino-silicate. The CaCO3 was formed by carbonization of the hydration products.

关 键 词：加气混凝土 碱性 微观分析 孔隙尺寸 水化产物 

分 类 号：TQ170.9[化学工程—硅酸盐工业]