中文摘要：

对10℃下不同水灰比矿物掺合料水泥砂浆的力学性能进行了试验研究,利用火山灰效应比强度分析法,分析了10℃下不同龄期砂浆试件矿物掺合料的火山灰效应发展趋势。结果表明,加入复合矿物掺合料增强了砂浆的强度,同水灰比复合矿物掺合料火山灰效应随龄期变化趋势基本一致,不同水灰比下,复合掺合料的火山灰效应贡献率随龄期表现出不同的变化趋势,0.5水灰比火山灰效应贡献率总体呈逐渐上升,0.36水灰比火山灰效应逐渐下降同时在10℃下提高硅灰掺量能更好的发挥复合矿物掺合料的火山灰效应。

英文摘要：

The mechanical properties of cement mortar with different water-cement ratio at 10 ℃ were studied, and the pozzolan effect of mortar samples at different ages under 10 ℃ was analyzed by the method of specific strength.The results show that the strength of mor- tar is enhanced by the addition of compound mineral admixture,and the pozzolanic effect with water-cement ratio is consistent with the age.The contribution rate of pozzolanic effect of composite admixture varies with different water-cement ratio And the contribution rate of 0.5% ash-cement ratio was gradually increased, 0.36 water-ash ratio decreased gradually.At 10 ℃, the addition of silica fume could better play the role of composite mineral admixture of the pozzolanic effect.