Modeling the dilatancy of overconsolidated clay

Gao, Z. and Zhao, J. (2013) Modeling the dilatancy of overconsolidated clay. In: Yang, Q., Zhang, J.-M., Zheng, H. and Yao, Y. (eds.) Constitutive Modeling of Geomaterials: Advances and New Applications. Series: Springer Series in Geomechanics and Geoengineering. Springer Heidelberg: Berlin, Germany, pp. 541-545. ISBN 9783642328138 (doi: 10.1007/978-3-642-32814-5_73)

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The dilatancy of clay has long been considered as a function of the current stress state independent of the loading history. Experimental evidence, however, indicates the dilatancy behavior of over-consolidated (OC) clay bears close correlation with the overconsolidation ratio (OCR) of the soil. This paper presents a simple dilatancy relation for OC clays based on the modified Cam-clay (MCC) model. The dilatancy relation is integrated into a bounding surface model to predict the behavior of OC clays. With only three extra parameters added to the MCC model which can be easily calibrated by triaxial compression tests, the new model is shown to offer good predictions for the experimental data.

Item Type:Book Sections
Glasgow Author(s) Enlighten ID:Gao, Dr Zhiwei
Authors: Gao, Z., and Zhao, J.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Publisher:Springer Heidelberg

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