路基处治土回弹模量的预估方法  

A Method to Predict Resilient Moduli of Lime and Lime Cement Stabilized Soils Used in Highway Subgrades

作　　者：谢华昌[1] 凌建明[1] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室

出　　处：《建筑材料学报》2008年第4期441-445,共5页Journal of Building Materials

基　　金：上海市科委科技攻关项目(002112043)

摘　　要：低路堤路基土湿度的变化会对其回弹模量产生显著影响.采用水泥-石灰-土和石灰-土2种处治土,通过室内吸水、浸水和干-湿循环模拟试验,建立了回弹模量与龄期、饱和度以及干-湿循环次数的预估方程,并通过现场试验检测的路基土湿度,应用该预估方程对2种路基处治土的回弹模量进行了预估.结果表明:预估值与实测值较为吻合.To simulate the effect of moisture content of subgrade soils on resilient moduli, three experimental stages（ sucking water, soaking water, draining moistening cycles） were conducted to develop the prediction models for both lime-cement soils and lime soils. Based on the laboratory test results, a comprehensive equation was developed to predict the elastic moduli of two types of stabilized soils. With the in-situ tests of subgrade soils, the elastic moduli of two types of stabilized soils can be predicted by the established prediction models, and the results indicate that the predicted values are close to the laboratory results.

关 键 词：处治土 模拟试验 回弹模量 预估模型 

分 类 号：U414[交通运输工程—道路与铁道工程]