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Predicting permanent deformation behaviour of unbound granular materials
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology. Kungliga Tekniska Högskolan.
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology. University of Iceland.
2015 (English)In: The international journal of pavement engineering, ISSN 1029-8436, E-ISSN 1477-268X, Vol. 16, no 7, 587-601 p.Article in journal (Refereed) Published
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Text
Abstract [en]

To reliably predict the permanent deformation behaviour of unbound granular materials (UGM) in a pavement structure, the material parameters of the constitutive models used in design should be evaluated using a multi-stage (MS) loading approach. This paper investigated the prediction of the accumulation of permanent strain in UGM using some current models, extended applying the time-hardening approach, based on MS repeated load triaxial tests (RLTTs).

The material parameters of these models were optimised for five different UGM used in pavement construction using the MS RLTT data with a specific set of stress levels. With these models, the accumulations of permanent strain in the same materials for MS RLTTs with a different set of stress levels were predicted. Using this approach, three out of the four models performed very well, which may be further developed for field conditions for better prediction of rutting.

Place, publisher, year, edition, pages
2015. Vol. 16, no 7, 587-601 p.
Keyword [en]
Flexible pavement, Unbound base, Deformation, Mathematical model, Triaxial, Prediction, Rutting (wheel)
National Category
Applied Mechanics Infrastructure Engineering
Research subject
30 Road: Highway design, 32 Road: Pavement design
Identifiers
URN: urn:nbn:se:vti:diva-9305DOI: 10.1080/10298436.2014.943209ISI: 000355121800002ScopusID: 2-s2.0-84929952537OAI: oai:DiVA.org:vti-9305DiVA: diva2:908650
Available from: 2016-03-03 Created: 2016-03-02 Last updated: 2016-08-24Bibliographically approved

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Rahman, Mohammad ShafiqurErlingsson, Sigurdur
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf