Experimental Study on Elastic Stiffness of Kaolinite Clay
This paper presents a study on the elastic shear modulus of Kaolinite clay at very small strains under isotropic stress from triaxial tests.The Kaolinite clay sample is subjected to an isotropic stress of 100, 200 and 400 kPa.In this very small strain domain where strain is less than 10-3 %, the behaviour of clay soil shows an elastic response.In conventional triaxial test, an initial shear modulus, Go, can be measured using an external strain measurement device.Nevertheless, there is an advantage to mount local strain sensors directly on a clay sample in order to obtain more accurate measurement of Go.Also the Go can be measured by bender elements through propagation of an elastic shear wave.Therefore in this research G0 can be obtained by external, local strain measurements and bender element tests.These results of G0 in the very small strain region are compared and show that there is a good agreement between the results from local strain measurements and bender element tests.
Elasticity Shear wave velocity Kaolinite clay Small strain
Keeratikan Piriyakul
Department of Civil and Environmental Technology,College of Industrial Technology,King Mongkuts University of Technology North Bangkok,Bangkok,Thailand
国际会议
香港
英文
395-398
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）