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A simple triaxial system for evaluating the performance of unsaturated soils under repeated loading

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Thom, R., Sivakumar, V., Brown, J. L. and Hughes, D. (2008) A simple triaxial system for evaluating the performance of unsaturated soils under repeated loading. Geotechnical Testing Journal, 31 (2). pp. 107-114. [Journal article]

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DOI: 10.1520/GTJ100963

Abstract

Unsaturated soils constitute a large proportion of the foundation materials supporting infrastructure throughout the world and they are subject to various loading conditions. This paper describes the development of a simple system for testing unsaturated soils under repeated loading. The equipment was comprised of a modified triaxial cell with hydraulic loading system, hall-effect transducers for on-sample strain measurements, and thermocouple psychrometer for suction measurements. A number of undrained monotonic and repeated loading triaxial tests were performed on compacted samples of kaolin clay in order to attest the newly developed system. The results yielded some useful information on the resilient modulus and permanent deformation of a soil when subjected to repeated loading. There is some difference between the failure deviator stress of samples subjected to repeated and monotonic loading, though repeated loading continued to result in a significant permanent deformation. This paper is aimed at demonstrating the key features of the equipment using preliminary data generated as part of the on-going research.

Item Type:Journal article
Keywords:Unsaturated soils, repeated loading, triaxial test
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Centre for Sustainable Technologies (CST)
ID Code:9387
Deposited By:Dr Jane Boyd
Deposited On:26 Jan 2010 11:37
Last Modified:01 Sep 2010 15:34

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