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Evaluation of the Mechanistic-Empirical Pavement Design Guide model for permanent deformations in asphalt concrete

Oscarsson, Erik LU (2011) In International Journal of Pavement Engineering 12(1). p.1-12
Abstract
The model for permanent deformation in asphalt concrete (AC) layers used in the Mechanistic-Empirical Pavement Design Guide (MEPDG) was evaluated. Two instrumented flexible pavements were subjected to heavy vehicle simulator testing at three constant temperatures. Permanent deformation modelling was carried out using the MEPDG software v1.003 at the highest accuracy level. The nationally calibrated model resulted in underprediction by 35-45%. Model results were successfully calibrated to fit observation using field calibration factors that increased temperature susceptibility by 45-50% and decreased the dependency of the number of loadings by 30-40%. The field calibration factors should be confirmed by studying existing pavements before... (More)
The model for permanent deformation in asphalt concrete (AC) layers used in the Mechanistic-Empirical Pavement Design Guide (MEPDG) was evaluated. Two instrumented flexible pavements were subjected to heavy vehicle simulator testing at three constant temperatures. Permanent deformation modelling was carried out using the MEPDG software v1.003 at the highest accuracy level. The nationally calibrated model resulted in underprediction by 35-45%. Model results were successfully calibrated to fit observation using field calibration factors that increased temperature susceptibility by 45-50% and decreased the dependency of the number of loadings by 30-40%. The field calibration factors should be confirmed by studying existing pavements before being employed. The model did not assess the permanent deformation contribution of each AC layer correctly. Therefore, the model should be refined with further trench studies using in-service pavements. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Mechanistic-Empirical Pavement Design Guide, modelling, permanent deformation, asphalt concrete
in
International Journal of Pavement Engineering
volume
12
issue
1
pages
1 - 12
publisher
Taylor & Francis
external identifiers
  • wos:000284003200001
  • scopus:78649314252
ISSN
1029-8436
DOI
10.1080/10298430903578952
language
English
LU publication?
yes
id
e0210394-bbc6-4a2c-85e9-5f444fd5518d (old id 1774268)
date added to LUP
2011-02-01 09:51:28
date last changed
2017-10-22 04:28:03
@article{e0210394-bbc6-4a2c-85e9-5f444fd5518d,
  abstract     = {The model for permanent deformation in asphalt concrete (AC) layers used in the Mechanistic-Empirical Pavement Design Guide (MEPDG) was evaluated. Two instrumented flexible pavements were subjected to heavy vehicle simulator testing at three constant temperatures. Permanent deformation modelling was carried out using the MEPDG software v1.003 at the highest accuracy level. The nationally calibrated model resulted in underprediction by 35-45%. Model results were successfully calibrated to fit observation using field calibration factors that increased temperature susceptibility by 45-50% and decreased the dependency of the number of loadings by 30-40%. The field calibration factors should be confirmed by studying existing pavements before being employed. The model did not assess the permanent deformation contribution of each AC layer correctly. Therefore, the model should be refined with further trench studies using in-service pavements.},
  author       = {Oscarsson, Erik},
  issn         = {1029-8436},
  keyword      = {Mechanistic-Empirical Pavement Design Guide,modelling,permanent deformation,asphalt concrete},
  language     = {eng},
  number       = {1},
  pages        = {1--12},
  publisher    = {Taylor & Francis},
  series       = {International Journal of Pavement Engineering},
  title        = {Evaluation of the Mechanistic-Empirical Pavement Design Guide model for permanent deformations in asphalt concrete},
  url          = {http://dx.doi.org/10.1080/10298430903578952},
  volume       = {12},
  year         = {2011},
}