Experimental study on the dynamic characteristics of Expansion Soil-Rubber through resonance column test
Waste rubber can better improve the mechanical properties and expansion and con-traction characteristics of expansive soil.In this experiment,considering the influence of dif-ferent initial conditions on the dynamic shear modulus of Expansion Soil-Rubber(ESR),the NGZ-20 resonance column testing machine was used to carry out a series of studies on differ-ent moisture content,rubber content and particle size.The maximum dynamic shear modu-lus,dynamic shear modulus and shear strain of ESR under different initial conditions were obtained.The test results show that the maximum dynamic shear modulus of reinforced soil decreases with the increase of rubber content and water content.In the strain range of 1×10-6<γ<1×10-4,the dynamic shear modulus declines obviously,and the change of rubber content has more significant effect on the dynamic shear modulus than the change of water content.The influence of rubber particle size on the maximum dynamic shear modulus is obvious,but has little effect on the attenuation curve of dynamic shear modulus.The dy-namic parameters obtained from the test can provide reference for the engineering application of rubber modified expansive soil.
NETL
NSTL
万方数据
维普
