石灰粉煤灰稳定低液限粉土底基层性能研究  

Study of sub-base performance of low liquid limit silt stabilized by lime and fly ash

作　　者：王选仓[1] 李振霞[1] 薛晖[1] 

机构地区：[1]长安大学,陕西西安710064

出　　处：《武汉大学学报（工学版）》2007年第2期88-91,98,共5页Engineering Journal of Wuhan University

基　　金：2005年交通部西部课题资助项目(编号:200531881213)

摘　　要：针对低液限粉土稳定性差的特点,采用试验和理论分析相结合的方法,对子洲至靖边高速公路的石灰、粉煤灰稳定低液限粉土底基层的稳定性能进行系统研究.对低液限粉土进行物理、力学性质试验,取得基本的研究参数;通过试验分析几种稳定土方案,并对加固机理和影响因素进行分析;提出低液限粉土的最佳稳定加固方案和粉土物理指标对稳定效果的影响规律.In light of the poor stability of low liquid limit silt, the stabilization of the Zi-jing Expressway sub-base of low liquid limit silt, is studied by laboratory experiments and theoretical analysis. Firstly,the experiments in laboratory are conducted to get the basic physico-mechanical parameters of the low liquid limit silt. Then, the stabilization and consolidation scheme of it and the principles and influencing factors of stabilization are analyzed. Finally, the best stabilization and consolidation scheme of low liquid limit silt is proposed; and the influence law of physical index for steady effect is given.

关 键 词：低液限粉土 底基层稳定性能 稳定加固方案 加固机理 影响因素 

分 类 号：U416.212[交通运输工程—道路与铁道工程]