川南地区高含水量粉质黏土掺灰法处治研究  

Study on High Water Content of Silty Clay Method of Adding in Lime Treatment

作　　者：文华[1] 罗鑫[1] 张玲玲[1] 

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621000

出　　处：《施工技术》2015年第16期85-88,103,共5页Construction Technology

基　　金：国家自然科学基金项目(51108393);四川省科技支撑计划项目(2013GZ0071)

摘　　要：川南地区粉质黏土具有含水量高、承载力低的特点,不适宜用作路基材料,选取川南地区一段乡村公路作为试验路段进行高含水量粉质黏土室内改良试验。为提高高含水量粉质黏土路基填料的压实特性,使其达到设计要求,在土中掺加石灰外加剂以改善粉质黏土的工程力学性质。通过分析外加剂的掺量、种类以及养护龄期等因素对石灰改良土工程性质的影响,并对石灰改良土的技术参数进行分析,以选择并确定适合于高含水量粉质黏土的最佳外加剂掺量,以期指导实际工程。Silty clay in southern of Sichuan with high water content and low bearing capacity characteristics is not suitable for roadbed material. A southern Sichuan＇s rural road was selected as the indoor experiment. In order to improve the high water content soft clay subgrade compaction properties of filler and make it meet the design requirements,some lime is put in the mixed with lime additive to improve the engineering mechanics properties of silty clay. Through the analysis of improved soil engineering properties of admixture types,dosage and the relationship between the factors such as the curing age and analysis all kinds of improved soil parameters,we can get the high water content of silty clay best admixture content and have the guide to practical engineering.

关 键 词：道路工程 高含水量 粉质黏土 掺灰法 石灰 

分 类 号：U416.1[交通运输工程—道路与铁道工程]