含盐量对水泥灰土压缩性的影响  

Research and Application of Optimizing Structural Reinforcement Methods in Fuzzy Mathematics

作　　者：张艳[1] 文桃[1] 米海珍[1] 王月礼[1] 应赛[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2014年第2期39-42,共4页Journal of Gansu Sciences

基　　金：甘肃省自然科学基金项目(3ZSO42-B25-031)

摘　　要：通过对水泥灰土进行不同含盐量的Na2SO4溶液浸泡后的固结试验研究,得到了含盐量、养护龄期对水泥灰土的压缩性指标的影响规律.结果表明:随着含盐量的增大,水泥灰土的压缩系数呈现出先减小后增大的趋势,在达到含盐量7%之前,压缩系数随着含盐量的增大而减小;当含盐量为7%时,压缩系数减为最小;含盐量超过7%后,压缩系数开始增大,压缩模量的变化规律与压缩系数相反.随着养护龄期的增长,水泥灰土的压缩系数不断减小,并且在初期(<20天)压缩系数随龄期增长变化较快,而在后期(>20天)压缩系数随龄期增长变化较慢,压缩模量与养护龄期的关系曲线则呈相反的变化趋势.Through the consolidation laboratory test of cement lime soil by different sodimn sulfate saltcontents lime soil. W ution soak, got the influence rule of compressibility index of salt content, curing age of cement ith the increase of salt content, the compressibility of cement lime soil presents a trend of in- crease with the decrease after first Between the salt content 7 % , coefficient of compressibility decreases with the increase of salt content, when the salt content 7% compression coefficient is reduced to a mini- mum, more than 7 %, coefficient of compressibility begins to increase, change law of compression modulus and coefficient of compressibility is opposite; as the growth of the curing age, cement lime soil compressibility is continuously decreased,before and during the early （〈20 d） coefficient of compressibility changing faster with the growth of maintenance period,in the later period （〉20 d） coefficient of compressibility changing slower with the growth of maintenance period, the curve of modulus of compressibility and curingage showing the opposite trend.

关 键 词：水泥灰土 含盐量 压缩系数 压缩模量 龄期 

分 类 号：TU411.5[建筑科学—岩土工程]