Engineering Properties and Moisture Susceptibility of Silty Clay Stabilized with Lime, Class C Fly Ash, and Cement Kiln Dust
Publication: Journal of Materials in Civil Engineering
Volume 21, Issue 12
Abstract
A laboratory study was undertaken to evaluate the effectiveness of different percentages of hydrated lime, class C fly ash (CFA), and cement kiln dust (CKD) as soil stabilizers. Cylindrical specimens were compacted and cured for 28 days in a humidity room having a constant temperature and controlled humidity. At the end of the curing period, specimens were tested for resilient modulus , modulus of elasticity , and moisture susceptibility using tube suction test. The study revealed that the values of , , and unconfined compressive strength (UCS) for the stabilized specimens increased with the increase in the amount of the stabilizing agent. It was also found that the increase in , , and UCS values varies with the type of stabilizing agents. The CKD-stabilized specimens exhibited a higher increase in , , and UCS values than the corresponding values of lime- and CFA-stabilized specimens. Additionally, CKD-stabilized specimens exhibited the least moisture susceptibility in terms of lowest dielectric values as compared to lime- and CFA-stabilized specimens.
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Acknowledgments
The writers are thankful to the Oklahoma Department of Transportation (ODOT) for providing funds for this project. Technical assistance of Dr. James Nevels, Jr., Dr. Joakim Laguros, and others at OU and ODOT is gratefully acknowledged.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 21 • Issue 12 • December 2009
Pages: 749 - 757
Copyright
© 2009 ASCE.
History
Received: Apr 30, 2007
Accepted: Feb 27, 2009
Published online: Nov 13, 2009
Published in print: Dec 2009
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