低热硅酸盐水泥改善大体积混凝土抗裂性能研究  

Study on improving crack resistance of massive concrete by low-heat Portland cement

作　　者：韩建国 吕鹏飞 阳运霞 吴勇 

机构地区：[1]四川嘉华企业(集团)股份有限公司,四川乐山614003 [2]国电大渡河深溪沟水电有限公司,四川汉源625300

出　　处：《人民长江》2010年第18期73-75,共3页Yangtze River

摘　　要：总结分析了大体积混凝土易产生裂缝的原因及应对措施,指出使用低热硅酸盐水泥可有效改善大体积混凝土的抗裂性能。选取低热硅酸盐水泥与普通硅酸盐水泥开展试验对比分析,从水化热、抗压强度、混凝土收缩膨胀等方面阐述了低热硅酸盐水泥有利于提高混凝土抗裂能力的原因。并通过瀑布沟水电站工程和深溪沟水电站工程的实例,说明了将低热水泥应用于水工大体积混凝土是可行的,且具有很好效果。We summarize the causes and countermeasures of massive concrete cracking, and propose that crack resistance of massive concrete can be effectively improved by low - heat Portland cement. We conduct experiment and comparative analysis on low - heat Portland cement and the ordinary cement, and discuss the causes of improving crack resistance of massive concrete by the low - heat cement from the aspects of hydration heat, compressive strength, shrinkage and expansion. The practical application cases of Pubugou and Shenxigou hydropower stations illustrate that it is feasible to apply the low - heat cement in a massive concrete project and the effect is satisfied.

关 键 词：低热硅酸盐水泥 大体积混凝土 抗裂性能 水化热 

分 类 号：TV43[水利工程—水工结构工程]