石膏对贝利特-硫铝酸钡钙水泥强度和硬化浆体结构的影响  

Influence of Gypsum on Compressive Strength and Performance of Hardened Paste of Belite-barium Calcium Sulphoaluminate Cement

作　　者：武红霞[1] 芦令超[1] 王守德[1] 陈诚[1] 李秋英[1] 

机构地区：[1]济南大学材料科学与工程学院,济南250022

出　　处：《硅酸盐通报》2009年第2期303-306,311,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(50672033);济南大学博士基金(B0517)资助项目

摘　　要：研究了石膏对贝利特-硫铝酸钡钙水泥强度和硬化浆体结构的影响。结果表明:贝利特-硫铝酸钡钙水泥熟料的矿物组成主要有C3S、C2S、C3A、C4AF和C2.75B1.25A3S;当水泥中石膏掺量为10%时,贝利特-硫铝酸钡钙水泥的3d、7d、28d和90d抗压强度分别达到了45.0、61.9、82.1和85.6MPa;贝利特-硫铝酸钡钙水泥的水化产物主要有AFt、Ca(OH)2、C-S-H凝胶等,随石膏掺量的增加,AFt的数量逐渐增加,水化后期的Ca(OH)2数量逐渐减少。用XRD和SEM来分析硬化水泥浆体组成和结构。The influence of gypsum on compressive strength and performance of hardened paste barium calcium sulphoaluminate cement was studied. The results showed that mineral phases of belite- of belite-barium calcium sulphoaluminate cement clinker were C3S, C2S, C3A, C4AF and C2.75B1.25A3^-S. When gypsum content is 10% , the compressive strengths at 3d,7d,28d and 90d curing ages are 45.0,61.9, 82.1 and 85.6 MPa. The hydration products of belite-barium calcium sulphoaluminate cement are mainly AFt, Ca（OH）2, C-S-H gel. With increasing of gypsum content, the amount of AFt is improved and the amount of Ca（OH）2 at hydration late is decreased gradually. The composition and structure of the hardened cement paste are analyzed by means of XRD and SEM.

关 键 词：石膏 贝利特-硫铝酸钡钙 强度 硬化浆体结构 

分 类 号：TQ172[化学工程—水泥工业]