Experimental Study on Parameters of Duncan-Chang Model for Cement-Soil

Abstract:

The conventional triaxial tests for cement-soil show stronger soften characteristics of cement-soil under low confining pressure. The soften character is weaken as confining pressure decrease. For adopting Duncan-Chang hyperbola model to obtain parameters of cement-soil, the model cannot include the stress-strain soften characteristics of cement-soil, and must be discussed. The paper studies on parameters of Duncan-Chang model using generalized Hooke law and nonlinear elastic theory. The researches show the parameters of k and n are unrelated to soften characteristics of cement-soil; the relation of Rf and σ3 is given by the soften characteristics, Rf influence the soften process directly. The calculation method could be used in E-u model, and has good practical value.

• Periodical: Advanced Materials Research (Volumes 641-642)
• Pages: 403-409
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.641-642.403
• Online since: January 2013
• Authors: Cai Fu Qian, Xin Jiang Song, Jie Wu, Wei Li
• Keywords: Break Ratio, Cement-Soil, Duncan-Chang Model, Tangent Modulus of Elasticity

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