氧化锌对高胶凝性水泥熟料矿物形成及强度的影响(英文)  

INFLUENCE OF ZnO ON FORMATION AND PROPERTIES FOR HIGH CEMENTING CLINKER

作　　者：马素花[1] 沈晓冬[1] 黄叶平[1] 龚学萍[1] 钟白茜[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009

出　　处：《硅酸盐学报》2005年第12期1499-1503,共5页Journal of The Chinese Ceramic Society

基　　金：国家"973"计划重点基础研究(2001CB610701) ;江苏省"六大人才高峰"计划资助项目。~~

摘　　要：采用工业原料配料,对以硅酸三钙(C_3S, C =CaO,S =SiO_2)、硫铝酸钙(C_4A_3, C =CaO,A=Al_2O_3,=SO_4^(2-))为主导矿物的含C_4A_3S矿物硅酸盐水泥熟料的矿物形成及其强度进行了研究。借助X射线衍射和热重差热分析研究了矿物形成过程;探讨了微量元素ZnO对熟料性能的影响及在熟料体系中的固溶情况。研究结果表明:生料中掺入ZnO可使C_4A_3和C_3s等矿物通过低温反应形成,共存于同一熟料体系中,并可提高熟料的强度;过高的ZnO含量亦会降低C_4A_3矿物的分解温度。The formation and strength of Portland cement clinker containing calcium sulphoaluminate （ C4A3 S^-, C=CaO, A= Al2 O3, S^-=SO4^2-）, which was synthesized with industrial reagents as raw materials, were studied. The process of mineral formation was analyzed by X-ray diffraction and thermogravimetric - differential scanning calorimetry. The influence of ZnO on the properties of clinker and solid solutions were discussed. The results show that tricalcium silicate （C3 S, S= SiO2 ） and calcium sulphoaluminate （C4A3 S^-） minerals can form and coexist in clinkers sintered at low temperature by the addition of ZnO to the raw material, and increase the strength of Portland cement clinker containing C4A3 S^-. The decomposition temperature of C4A3 S^- can be lowered by the addition of excessive ZnO into the raw materials.

关 键 词：氧化锌 硅酸三钙 硫铝酸钙 硅酸盐水泥 共存 分解 

分 类 号：TQ172.7[化学工程—水泥工业]