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Experimental study on dynamic characteristics of TEXSOL
ZHANG Yanmei, RUAN Donghua, CHENG Zhiliang
(College of Pipeline and Civil Engineering in China University of Petroleum, Qingdao 266580, China)
Abstract:
Through dynamic tri-axial test, the influences of the confining pressure, fiber length, fiber fineness and mixture ratio on the dynamic stress-strain relationship and dynamic strength of silty soil reinforced by polypropylene fiber were researched. The results show that the dynamic stress-strain relationship of TEXSOL is of the strain hardening type with the shape of near hyperbola. The influence of confining pressure on the dynamic stress-strain relationship of TEXSOL is great. The dynamic elastic modulus and dynamic strength of TEXSOL will increase with the increase of confining pressure,and decrease with the increase of vibration time. The finer the fiber is, the higher the dynamic strength and the ability to resist deformation are. The fiber can improve the dynamic cohesive force of soil, however it has little effect on soil friction angle.
Key words:  TEXSOL  dynamic characteristics  mixture ratio  dynamic strength  experiment