密度和含水率对固化土无侧限抗压强度的影响  

Influence of density and water content on unconfined compression strength of solidified soil

作　　者：樊恒辉[1,2,3] 吴普特[1,2,3] 高建恩[1,2,3] 王广周[1,2,3] 孙胜利 

机构地区：[1]中国科学院教育部水土保持与生态环境研究中心 [2]国家节水灌溉杨凌工程技术研究中心 [3]西北农林科技大学,陕西杨凌712100 [4]海威建材厂

出　　处：《中国水土保持科学》2006年第3期54-58,共5页Science of Soil and Water Conservation

基　　金：国家863节水专项"新型高效雨水集蓄与利用技术研究"(2002AA2Z40512);科技部农业科技成果转化资金"人工高效汇集雨水利用技术转化与工程示范"(02EFN217101279);西部开发科技行动"黄土高原小流域地表径流模拟与调控技术研究"(2002BA901A26);中科院水土保持研究所创新前沿"小流域地表径流调控模拟试验研究"(C23013700)

摘　　要：为给修建土壤固化剂集流面的施工工艺提供科学依据，采用正交设计方法，对密度和含水率影响固化土强度的规律性进行试验研究。试验分析结果表明：密度对固化土强度的影响大于含水率；随着密度的增大，固化土的强度呈直线上升；在同一密度下含水率在最优含水率的80％±5％范围内时，固化土的强度达到最大。在实际施工过程中，建议尽可能的增加固化土的密度，压实度控制至少超过0．94；混合料的含水率控制在最优含水率的80％～90％之间。On the certain condition of soil and certain amount of soil stabilizer dosage, density and water content are the key factors to effect on the unconfined compression strength of the catchments area with soil stabilizer. The rule of solidified soil intensity influenced by density and water content is studied. The results indicated that the density influenced the strength more than water content. Along with the increase of the density, the unconfined compression strength increases straightly. Under the same density, the strength was the greatest if the water ratio lies in the field from 75 % to 85 % of the optimum water content. If the water content wasn＇t in the scope, the unconfined compression strength of solidified soil descended straightly. This test shows that of sohdified soil should be compacted as much as possible and the compactness should be above 0.94 in the catchments area construction. The water content should be from 80 % to 90% of optimum moisture content.

关 键 词：土壤固化剂 固化土 无侧限抗压强度 集流面 含水率 土壤密度 

分 类 号：TU472.36[建筑科学—结构工程] TU411[建筑科学—土工工程]