Experimental Study on Triaxial Stress of Rubber Granule Modified Expansive Soil Roadbed
To explore the shear resistance of rubber granule modifed expansive soil roadbed,the triaxial consolidation no-drainage(CU)test is conducted with different rubber admixtures and confining pressure at all levels by taking the weak-medium expansive soil in Jiangning District of Nanjing as a test object.The test results show that the cohesive force of the soil tends to decrease continuously with the increase of rubber admixture.The angle of internal friction increases first,and then remains unchanged at 10％rubber admixture,and then decreases.The shear strength of the soil achieves the maximum value at 5％rubber admixture.The cohesive force and shear strength of the modified soil will greatly decrease when the rubber admixture rate is more than 10％,which needs to be considered when applied to the modification project of expansive soil.
expansive soilsrubbercohesionangle of internal frictionstress-strain
NETL
NSTL
万方数据
维普
