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钡掺杂对高阿利特硅酸盐水泥熟料组成与性能的影响
作者:郭向阳 芦令超 王守德 陈亚明 程新 王辉  
单位:济南大学材料科学与工程学院  
关键词:氧化钡  掺杂  高阿利特  水泥熟料  硫铝酸钡钙 
分类号:TQ172.1
出版年,卷(期):页码:2009,37(12):2083-2089
DOI:
摘要:

采用正交试验方法研究了掺杂氧化钡及形成的新矿物硫铝酸钡钙(C2.75B1.25A3S)对高阿利特水泥熟料组成与性能的影响。借助于X射线衍射和扫描电镜–能谱仪及岩相等分析方法,研究了水泥熟料的组成、结构及性能。结果表明:阿利特和硫铝酸钡钙矿物可以在同一熟料体系中共存;氧化钡的掺入促进了硫铝酸钡钙矿物的形成,同时对在低温下形成阿利特及对贝利特矿物的活化起到了重要作用。从早期强度角度分析,BaO的适宜掺量为1.8%(质量分数,下同),硫铝酸钡钙矿物的最佳设计含量为4.0%,所制备的高阿利特硅酸盐水泥的3,7,28d抗压强度分别为52.3,78.4,102.5MPa,展现了良好的早期力学性能;从后期强度分析,BaO的适宜掺量为1.3%,硫铝酸钡钙矿物的最佳设计含量为2.0%,所制备的高阿利特硅酸盐水泥的3,7,28d抗压强度分别为42.9,77.8,108.8MPa,显示了较高的后期强度。

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The clinker composition and the performance of alite-rich portland cement with different contents of BaO and C2.75B1.25A3 S were investigated by test with anorthogonal experiment design. The results show that alite and calcium barium sulphoaluminate can coexist in a clinker system; The addition of BaO is benefit to increase the content of C2.75B1.25A3 S , the activation of the belite and promotion of the formation of alite at low temperatures. The proper content of BaO is 1.8% and the optimal designed content of C2.75B1.25A3 S is 4.0%, the compressive strength of this cement at 3, 7, 28 d are 52.3, 78.4, 102.5 MPa, respectively, which shows excellent performance of early strength. The proper content of BaO is 1.3% and the optimal designed content of C2.75B1.25A3 S is 2.0%, the compressive strength of this cement at 3, 7, 28 d are 42.9, 77.8, 108.8 MPa, respectively, which shows excellent performance of late strength.

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基金项目:
国家“973”计划(2009CB623101);; 山东省自然科学基金(Y2008F49)资助项目
作者简介:
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参考文献:

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