Review of Current Methods for Swell Characterization of Subsoils for Transportation Infrastructure Design
Publication: Geotechnical Engineering for Transportation Projects
Abstract
Expansive soils exhibit large volume changes due to moisture content fluctuations from seasonal changes. These volume changes cause extensive damages to geotechnical infrastructure. Several methods are available in the literature using different test methods and loading conditions to characterize expansive soils. The selection of an appropriate characterization method is always a challenge to the practicing engineer. A few case studies are presented to explain the need for better characterization of highway projects on expansive soils. This is followed by the descriptions on different characterization methods utilizing swell strain and swell pressures for estimating the severity nature of expansive soils. Both tables and correlations for characterization of expansive soils using swell strains and swell pressures are presented and discussed. The details presented in this paper are useful to provide reliable characterization for expansive soils and offer assistance to practicing engineers towards better design and selection of subgrade foundations and stabilization methods.
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© 2004 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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