Experimental and Theoretical Studies for the Behavior of Strip Footing on Oil-Contaminated Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 135, Issue 12
Abstract
This paper presents the results of a series of plain-strain model tests carried out on both clean sand and oil-contaminated sand loaded with a rigid strip footing. The objectives of this study are to determine the influence of oil-contaminated sand on the bearing capacity characteristics and the settlement of the footing. Contaminated sand layers were prepared by mixing the sand with an oil content of 0–5% with respect to dry soil to match the field conditions. The investigations are carried out by varying the depth and the length of the contaminated sand layer and the type of oil contamination. A plain-strain elastoplastic theoretical model with an interface gap element between footing and the soil is carried out to verify the test results of the model. It is shown that the load-settlement behavior and ultimate bearing capacity of the footing can be drastically reduced by oil contamination. The bearing capacity is decreased and the settlement of the footing is increased with increasing the depth and the length of the contaminated sand layer. The agreement between observed and computed results is found to be reasonably good in terms of load-settlement behavior and effect of oil contamination on the bearing capacity ratio. A comparison between the model results and the prototype scale results are also studied.
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Acknowledgments
The tests were performed in the Soil Mechanics Laboratory of the Civil Engineering Department at the acknowledged University of Al-Tahadi—Libya. The writer appreciates the valuable comments and continuous encouragement of Professor Dr. Abdulsalam I. Al-Janabi and Professor Dr. S. V. Krishna Rao.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 135 • Issue 12 • December 2009
Pages: 1814 - 1822
Copyright
© 2009 ASCE.
History
Received: Sep 2, 2008
Accepted: May 29, 2009
Published online: Jun 5, 2009
Published in print: Dec 2009
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