Variation of Resilient Modulus, Strength, and Modulus of Elasticity of Stabilized Soils with Postcompaction Moisture Contents
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 2
Abstract
This study evaluated the effect of postcompaction moisture variations on the resilient modulus (), unconfined compressive strength (UCS), and modulus of elasticity () of cementitiously stabilized subgrade soils. Class C fly ash (CFA) and hydrated lime were used as the stabilizing agents. Specimens were compacted at optimum moisture content () with different percentages of stabilizers (i.e., 10% CFA and 6% lime) and then either dried or wetted to different moisture contents prior to testing for , UCS, and . Results showed that , UCS, and values increased due to drying and decreased due to wetting. -moisture, UCS-moisture, and E-moisture models were developed and proved to be useful in predicting the variations of , UCS, and values of stabilized subgrade soils with moisture changes. These models can be used, in the new mechanistic-empirical pavement design approach (M-E PDG), to predict , UCS, and values of stabilized subgrade soils with moisture variations.
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Acknowledgments
The authors are grateful to Dr. Joakim Laguros, Emeritus Professor, and Dr. Charbel Khoury, KMA Engineers, for their technical assistance.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 25 • Issue 2 • February 2013
Pages: 160 - 166
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 10, 2011
Accepted: Mar 5, 2012
Published online: May 2, 2012
Published in print: Feb 1, 2013
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