Prediction of Resilient Modulus of Cohesive Subgrade Soils from Dynamic Cone Penetrometer Test Parameters
Publication: Journal of Materials in Civil Engineering
Volume 19, Issue 11
Abstract
Current pavement design procedures recommend the resilient modulus of subgrade materials for pavement design and analysis. The objective of this paper is to develop two statistical models to predict the resilient modulus of subgrade cohesive soils from the dynamic cone penetration (DCP) test parameters and soil properties. The first model correlates resilient modulus to the dynamic cone penetration test parameters, while the second model correlates resilient modulus to both the dynamic cone penetration test parameters and soil properties. Field and laboratory experiments were conducted at 31 sites in Louisiana that contain four common soil types (A-4, A-6, A-7-5, and A-7-6). Field tests included DCP tests and soil sampling, while laboratory tests included determining basic soil properties and resilient modulus. Statistical analyses were conducted on the collected data, and two statistical models were developed for the prediction of resilient modulus of cohesive subgrade soils from the DCP test parameters and soil properties. The models predicted a separate data set that was not used in their development, indicating the success of the application of the dynamic cone penetration test in evaluating the resilient modulus of pavement subgrade soils. The predicted values obtained from the proposed models corresponded well with the measured resilient modulus values from the repeated load triaxial test.
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Acknowledgments
The Louisiana Department of Transportation and Development (LADOTD) and the Federal Highway Administration (FHWA) sponsored this research work through the LTRC under Contract Nos. UNSPECIFIED03-3P and UNSPECIFIED02-4B.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 19 • Issue 11 • November 2007
Pages: 986 - 992
Copyright
© 2007 ASCE.
History
Received: Apr 26, 2006
Accepted: Jan 8, 2007
Published online: Nov 1, 2007
Published in print: Nov 2007
Notes
Note. Associate Editor: Shin-Che Huang
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