Characteristics of compressibility of bio-enzyme expansive soil modified
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=bpai.
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万方数据
维普
