%0 Journal Article
%T 生物酶改良膨胀土的压缩特性<br>Characteristics of compressibility of bio-enzyme expansive soil modified
%A 曾娟娟
%A 文畅平
%A 刘子健
%J 土木建筑与环境工程
%D 2018
%R 10.11835/j.issn.1674-4764.2018.03.019
%X 为探究生物酶改良膨胀土压缩特性，通过一维固结试验，研究了生物酶、石灰、水泥改良膨胀土体孔隙比、压缩系数、单位沉降量与荷载变化规律。探讨了固结压力对生物酶、石灰、水泥改良膨胀土体压缩特性的影响。试验结果表明：生物酶、石灰、水泥改良膨胀土表现出不同的压缩性，主要反映在压缩曲线与压缩系数上；掺生物酶、石灰、水泥都能改善膨胀土的压缩性，其中，生物酶配比为1∶300改良膨胀土的压缩性最小；改良膨胀土的单位沉降量与荷载的关系可用幂函数来表示：si=bpia。<br>In order to determine the compressibility characteristics of bio-enzyme expansive soil, by a series of one-dimensional consolidation tests, the effect of consolidation pressure on compressibility attributions of bio-enzyme-treated, lime-treated and cement-treated expansive soil is scrtutinized, and voids ratio, compression coefficient and unit settlement are gained. The influence of compression pressure on bio-enzyme -treated expansive soil, lime-treated expansive soil, and cement-treated expansive soil is discussed. Bio-enzyme -treated, lime-treated and cement-treated expansive soil possesses different compressibility, which is embodied by e-p curve and coefficient compressibility The compressibility of expansive soil is improved by adding bio-enzyme, lime and cement. When the mass ratio between enzyme and water is 1:300, compressibility is minimum. Linear equations can describe the relation between unit settlement and unit loads:si=bpia.
%K 生物酶 膨胀土 压缩特性&lt
%K br&gt
%K bio-enzyme expansive soil compressibility
%U http://qks.cqu.edu.cn/cqdxxbcn/ch/reader/view_abstract.aspx?file_no=20180319&flag=1