膨胀土的自由膨胀率与矿物组成关系试验研究  

Relationship between free expansion rate and mineral composition of expansive soil

作　　者：陈永青 方炫强 孙政 陈宗辉 王勉 CHEN Yong-qing;FANG Xuan-qiang;SUN Zheng;CHEN Zong-hui;WANG mian(School of Civil Engineering,Central South University of Forestry and Technology,Changsha 410018,China;Hunan Provincial Communications planning,survey ＆Design Institute,Changsha 410018,China)

机构地区：[1]中南林业科技大学土木工程学院,湖南长沙410018 [2]湖南省交通规划勘察设计院,湖南长沙410018

出　　处：《河南城建学院学报》2018年第5期52-56,70,共6页Journal of Henan University of Urban Construction

基　　金：湖南省重点学科建设项目资助(2013ZDXK006);中南林业科技大学引进高层次人才科研启动基金项目(104-0094)

摘　　要：以揭示膨胀土自由膨胀率的内在规律为研究目的,对膨胀土自由膨胀率的影响因素进行试验研究,结果表明:本文模型能定量分析膨胀土膨胀势与矿物组成之间的相关关系,并能很好地拟合实测数据;可以定量预测膨胀土的膨胀势,并解释膨胀土膨胀特性与矿物组成之间的内在规律。The purpose of this study is to reveal the inherent law of free expansion rate of expansive soil. In this paper, the influence factors of free expansion rate of expansive soil is studied. The results show that the model can quantitatively analyze the coupling relationship between swelling potential and mineral composition of expansive soil, and can well fit the measured data. It can predict the expansive potential of expansive soil very accurately, and quantitatively explain the inherent law between swelling characteristics and mineral composition of expansive soil, which provides a basis for researchers to explain quantitatively the swelling reason of expansive soil.

关 键 词：膨胀土 自由膨胀率 多元模型 矿物组成 蒙脱石 归一化 

分 类 号：TU411[建筑科学—岩土工程]