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Effect of compaction on the resilient behaviour of granular materials: an analytical study

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
ConferenceEM2004, 16 July 2003, Seattle
SubjectRoads
Abstract
The new 2002 AASHTO Guide for Pavement Design advocates the use of the resilient modulus parameter for the characterization of granular materials used as base and sub-base layers in flexible pavements. This mechanistic parameter is known to be influenced by the material physical conditions and the state of stress the material is subjected to. The research work reported herein examines the effect of one of the construction variables, namely compaction, on the resilient modulus. The study involves an analytical simulation, using the Discrete Element Method (DEM), to quantify the effect of compaction, as measured by relative density, on the resilient modulus. It consists in performing analytical simulations on an assembly of particles compacted to three degrees of compaction and subjected to the same state of stress usually used in laboratory testing. Results confirmed the major role that density plays in defining the resilient behaviour of granular materials. Findings consolidated the potential of the DEM technique for modeling the resilient behaviour of these materials.
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  • EM2004 [Proceedings] (1 July 2003): 1–3.
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 46756
NRC-IRC-16153
NPARC number20378293
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Record identifierb16b3066-2257-4e64-9489-2b7eac8fe73e
Record created2012-07-24
Record modified2021-01-05
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