摘要
通过改良膨胀土养护过程中的同步横向和竖向电阻率测试,由测试结果计算出改良膨胀土的电阻率结构性参数,包括平均结构因子、各向异性系数以及平均形状因子的大小。通过对电阻率结构性参数在养护过程中变化规律的研究,定量分析掺灰改良膨胀土养护过程中的微结构变化规律。养护过程中的平均结构因子、平均形状因子以及各向异性系数分别代表了土的微结构、颗粒间的胶结特性以及各向异性的变化规律。试验结果表明,土的电阻率结构性参数指标可有效用于土的微结构变化定量研究。
An electrical resistivity method was introduced into the microstructure study on stabilized expansive soils and evaluated its effectiveness.The expansive soils were stabilized with lime and flyash,the horizontal and vertical electrical resistivity were measured at the same time during curing.The electrical formation parameters,such as the average formation factor,the electrical anisotropy index and the average shape factor were then calculated and studied.The changes in microstructure of lime or flyash stabilized expansive soils during curing were analyzed.The physicochemical process in lime or flyash stabilized expansive soils was discussed.Experimental results show the effectiveness of electrical resistivity method in quantitative study on the microstructure change of the additives stabilized expansive soils during curing.
出处
《工业建筑》
CSCD
北大核心
2011年第8期55-58,78,共5页
Industrial Construction
基金
国家自然科学基金项目(40802079
50478073)
合肥工业大学科研发展基金项目(2010HGXJ052)
关键词
改良膨胀土
微结构
电阻率
additives stabilized expansive soil
microstructure
electrical resistivity
