RESEARCH ARTICLE


Experiment Study on Rheological Model of Soft Clay



Donglin Wang*, Qiuling Lv, Xiancai He
School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China


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Creative Commons License
© 2014 Wang et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil Engineering, Anhui Jianzhu University, Anhui, China; Tel: +86-13695698055; E-mail: wdlvip@126.com


Abstract

This paper adopts the conventional tri-axial apparatus to respectively conduct tri-axial rheological tests on soft clay of different confining pressures by multi-stage loading vertical stress, specifically on the rheological behavior of the soft clay in Beijing area. The experimental results show that the deformation of this kind of clay has obvious time effects and nonlinear characteristics. According to the results, the test is to propose generalized Kelvin three unit and five unit model. Power function creep model and time hardening experiential models are used to describe the clay rheological behavior. The results show that, time hardening creep model is an advanced model with high accuracy, simple equations and fewer parameters and establishes a typical clay rheological model that fits Beijing area.

Keywords: Curve fitting, rheological model, rheological test, soft clay..