Permanent deformation in asphalt concrete

Andrew Drescher, Jong R. Kim, David E. Newcomb

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Permanent deformation in asphalt concrete pavements manifests itself as depressions along the wheel paths, ruts. The prediction of rut depth requires a knowledge of materials characteristics that relate the asphalt concrete permanent strains to stress and temperature. This paper analyzes the character of permanent strains as inferred from a creep/recovery test. It is shown that the separation of the strains into the time-independent elastic and plastic strains and the time-dependent viscoelastic strains requires tests with various times to unloading. The analysis is illustrated with the results of a series of uniaxial compression creep/recovery tests on one asphalt concrete mixture. The tested material exhibits temperature-dependent elastic and plastic strains that are proportional to the level of stress. The time- and temperature-dependent viscoelastic strains are nonlinearly related to the stress level and stress history. An approximate constitutive equation that disregards this nonlinearity is presented.

Original languageEnglish
Pages (from-to)112-128
Number of pages17
JournalJournal of Materials in Civil Engineering
Volume5
Issue number1
DOIs
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

Asphalt concrete
Plastic deformation
Creep
Recovery
Concrete pavements
Asphalt pavements
Concrete mixtures
Constitutive equations
Unloading
Temperature
Wheels

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction
  • Materials Science(all)

Cite this

Permanent deformation in asphalt concrete. / Drescher, Andrew; Kim, Jong R.; Newcomb, David E.

In: Journal of Materials in Civil Engineering, Vol. 5, No. 1, 1993, p. 112-128.

Research output: Contribution to journalArticle

Drescher, Andrew ; Kim, Jong R. ; Newcomb, David E. / Permanent deformation in asphalt concrete. In: Journal of Materials in Civil Engineering. 1993 ; Vol. 5, No. 1. pp. 112-128.
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