水泥细度对砂浆体积稳定性的影响Influence of cement fineness on volume stability of mortar
周世华,杨华全,董芸,苏杰
摘要(Abstract)：
主要研究了水泥细度对硬化浆体强度、弹性模量、干缩和线膨胀系数的影响情况。试验结果表明,随着水泥细度的增加,弹性模量和线膨胀系数呈线性增长趋势;当中热硅酸盐水泥比表面积超过340 m2/kg时,对试件7 d龄期后的增强效果非常微弱,但干缩速度明显加快,最终干缩率较大。这说明中热硅酸盐水泥细度越大,砂浆体积稳定性越差,尤其是当水泥比表面积超过340 m2/kg时,水泥细度对砂浆体积稳定性的影响非常显著。
关键词(KeyWords)： 水泥细度;体积稳定性;干缩;线膨胀系数
基金项目(Foundation): 国家自然科学基金重点项目(50539010)
作者(Author): 周世华,杨华全,董芸,苏杰
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