Constitutive Modeling of Dilatancy for Overconsolidated Clay

Gao, Z. and Zhao, J. (2013) Constitutive Modeling of Dilatancy for Overconsolidated Clay. In: The Second International Symposium on Constitutive Modelling of Geomaterials: Advances and New Applications, Beijing, China, 15-16 Oct 2012, pp. 541-545. ISBN 9783642328138 (doi: 10.1007/978-3-642-32814-5_73)

Abstract

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: Conference Proceedings
• Status: Published
• Refereed: Yes
• 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
• ISBN: 9783642328138
• Copyright Holders: Copyright © 2013 Springer-Verlag Berlin Heidelberg
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher