压实水泥湿陷性黄土的力学特性
作者：万清琦 崔自治 杨宁宁 刘生雨
来源：《南水北调与水利科技》2016年第01期
摘要：为拓展压实水泥土在黄土地基处理中的应用，以水泥掺量、粉煤灰掺量和含水量为因素，设计L9（34）正交试验方案，击实试验法成样，试验研究了压实水泥黄土28 d和承诺的近义词56 d的力学特性，分析了各因素对水泥土的干密度、强度和弹性模量的作用规律、作用机理，弹性模量与强度的关系。结果表明：粉煤灰掺量对压实水泥黄土的干密度影响极显著，含水量的影响显著，水泥掺量的影响不显著。水泥黄土的最大干密度和最优含水量应考虑粉煤灰掺量的影响，可不考虑水泥掺量的影响。粉煤灰能显著提高压实水泥黄土的强度和弹性模量，尤其是后期强度。水泥掺量对压实水泥黄土两个龄期的强度和弹性模量影响均极显著，粉煤灰掺量的后期影响极显著，含水量的影响显著。
关键词：水泥黄土；强度；弹性模量；干密度莫言哪里人
与学生谈话记录 中图分类号：TU47 文献标志码：A 文章编号：肉松饼16721683（上行速率2016）01011905
Mechanical properties of compacted cement loess
WAN Qingqi，CUI Zizhi，YANG Ningning，LIU Shengyu
（College of Civil and Hydraulic Engineering，Ningxia University，Yinchuan 750021，China）
Abstract：In order to expand the application of compacted soil-cement in loess foundation treatment，taking cement dosage，fly ash dosage and water content as factors，日本足球动漫an orthogonal experimental scheme L9（34） was carried out to study the mechanical properties of compacted cement loess at 28d and 56d.The effect of various factors on dry density，strength and elastic modulus，mechanism，常先勤relationship between elastic modulus and strength were analyzed.The results showed that there was an extremely significant influence of fly ash dosage on dry density of compacted cement loess，followed by water content and but not found of cement dosage.The influence of fly ash dosage should be taken into account when maximum dry density and optimum water content of cement soil are determined，the influence of cement dosage can be ignored.Fly ash can significantly increa the strength and elastic modulus of compacted
cement loess，especially the later strength.The influence of cement dosage on strength and elastic modulus of compacted cement loess at two ages is extremely significant，as well as the fly ash dosage 鲜炖花胶；in addition，the water content also showed a significant influence effect.
