Experimental research on shear strength performance of lime-fly ash solidified petroleum-contaminated soil with different salt contents
To study the shear characteristics of petroleum-contaminated soil,using coastal saline soil with different salt contents as the research object,mechanical strength performance tests and microscopic analysis are conducted on stone-stabilized petroleum-contaminated soil with lime and fly ash.The research results indicate that with increasing salt content,the cohesion and internal friction angle of lime-fly ash stabilized petroleum-contaminated soil(referred to as contaminated soil)first increase and then decrease.At the same salt content,the cohesion and internal friction angle of contaminated soil first increase and then decrease with increasing mass fractions of lime and fly ash,while decreasing with increasing oil mass fraction.As the salt content is 1％with oil,fly ash,and lime mass fractions of 4％,20％,and 10％respectively,the cohesion and internal friction angle of contaminated soil are maximized.The stress-strain curve of contaminated soil increases and then decreases and stabilizes under different lime,fly ash,and oil mass fractions.The microstructural characteristics of contaminated soil under different salt contents are consistent with the variation of macroscopic shear strength parameters.
万方数据
维普
