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 language | English |
|---|---|
| Pages (from-to) | 112-128 |
| Number of pages | 17 |
| Journal | Journal of Materials in Civil Engineering |
| Volume | 5 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Permanent deformation in asphalt concrete
AU - Drescher, Andrew
AU - Kim, Jong R.
AU - Newcomb, David E.
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
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U2 - 10.1061/(ASCE)0899-1561(1993)5:1(112)
DO - 10.1061/(ASCE)0899-1561(1993)5:1(112)
M3 - Article
VL - 5
SP - 112
EP - 128
JO - Journal of Materials in Civil Engineering
JF - Journal of Materials in Civil Engineering
SN - 0899-1561
IS - 1
ER -