alexa Estimation of the Residual Stress in Clay Sampled from
ISSN: 2165-784X

Journal of Civil & Environmental Engineering
Open Access

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Research Article

Estimation of the Residual Stress in Clay Sampled from the Field

Owayo AA* and Ou CY
Department of Civil and Construction Engineering, National Taiwan University of Science and Technology, ROC Taipei-Taiwan
Corresponding Author : Owayo AA
Department of civil and construction engineering
National Taiwan University of science and Technology
ROC Taipei-Taiwan
Tel: +886 2 2733 31
E-mail: [email protected]
Received May 12, 2014; Accepted June 17, 2014; Published June 23, 2014
Citation: Owayo AA, Ou CY (2014) Estimation of the Residual Stress in Clay Sampled from the Field. J Civil Environ Eng 4: 149. doi: 10.4172/2165-784X.1000149
Copyright: © 2014 Owayo AA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

The objective of this study is to establish a reliable way to determine the residual stress in clay sampled from the field. During saturation in triaxial test, using residual stress as back pressure as opposed to the traditional saturation methods leads to better sample quality. In this research the residual stress within the sample is measured and compared against the one that can be predicted with the help of the equation proposed by Skempton based on the account of change in total stress during sampling. The results do not exhibit any predictable trend, in fact sometimes the prediction is quite good while the rest of the time not good. Thus in the absence of a perfect sample, the use of Skempton’s equation is more reliable.

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