摘要
通过直剪试验、压缩试验和三轴试验对人工制备最优含水率下不同浓度锌离子污染土的工程力学性能进行测试,研究了不同锌离子浓度污染土的抗剪强度和压缩特性。结果表明:随着锌离子浓度的增加,污染土的内摩擦角和压缩系数增加,内聚力和压缩模量下降,而污染土的孔隙比随着锌离子浓度的增加先减小后增大;在不同垂直压力下,随着压力的增加,污染土的压缩系数整体先减小后增大,压缩模量先增大后减小。
This paper conducts an experimental study on the engineering mechanical properties of zinc contaminated soil in different concentration under the condition optimum moisture content if artificial preparation through shear test,compression test and triaxial test.The paper studies on the shear strength and compression properties of zinc ion contaminated soil in different concentration.The results show that with the increase of the concentration of zinc ion,the friction angle and compression coefficient of the concentrated soil increase while the cohesive strength and compressive modulus decrease.The pore ratio of the contaminated soil samples decreases first and then increases with the increase of the concentration of zinc ion.With the increase of vertical pressure,the compression coefficient of contaminated soil decreases first and then increases,while the compression modulus increases first and then decreases.
出处
《安全与环境工程》
CAS
2017年第3期71-76,共6页
Safety and Environmental Engineering
基金
国家自然科学基金项目(51208187
51678223)
黄土地区公路建设与养护技术交通行业重点实验室开放课题项目(KLTLR-Y12-11)
关键词
锌离子污染土
抗剪强度
压缩特性
力学性能试验
zinc ion contaminated soil
shear strength
compression properties
experiment on mechanical properties