Program BIMODPAV for analysis of flexible pavements

Punya P. Khanal, Michael Mamlouk

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A new axisymmetric finite-element pavement-analysis program BIMODPAV capable of accounting for the bimodular nature of the asphalt concrete is developed. The program also considers the nonlinear behavior of the base, sub-base, and subgrade layers. The new program was verified with the existing programs within their capabilities. The effect of considering the bimodularity of asphalt concrete in the analysis is apparent at high temperatures and when it is used for thick pavements. Strains and displacements calculated using the bimodular analysis are almost always higher than the strains and displacements calculated using the single-modulus approach. When asphalt concrete is characterized as a bimodular material and its underlying layers as nonlinear materials, the displacements and strains are as much as twice the corresponding single-modular solution. Bimodular analysis of asphalt concrete causes higher tensile strains at the bottom of the asphalt layer and higher vertical strains on top of the subgrade resulting in reduced fatigue and rutting performance predictions.

Original languageEnglish (US)
Pages (from-to)43-50
Number of pages8
JournalJournal of Transportation Engineering
Volume123
Issue number1
StatePublished - Jan 1997

Fingerprint

Asphalt concrete
asphalt
pavement
Pavements
subgrade
Tensile strain
rutting
Asphalt
fatigue
Fatigue of materials
cause
analysis
programme
performance
prediction
Temperature

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Program BIMODPAV for analysis of flexible pavements. / Khanal, Punya P.; Mamlouk, Michael.

In: Journal of Transportation Engineering, Vol. 123, No. 1, 01.1997, p. 43-50.

Research output: Contribution to journalArticle

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