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A model for predicting permanent deformation 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: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 16, no 3, 653-673 p.Article in journal (Refereed) Published
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Text
Abstract [en]

A simple model has been proposed to characterise the accumulation of permanent deformation (PD) in unbound granular materials (UGMs) under cyclic loading of variable magnitudes. The model was developed based on multi-stage (MS) repeated-load triaxial (RLT) tests. The material parameters of this model can be evaluated using an MS RLT test. The model was validated by calibrating it for a few UGMs with a range of grain size distributions, moisture contents and degrees of compaction.

The calibrated model was further validated by predicting the PD behaviour of some of these UGMs for different stress conditions. Generally, quite satisfactory predictions were obtained with this model with the advantage of reduced effort required for its calibration compared to some existing models. Additionally, the sensitivity of the parameters of this model to moisture, degree of compaction and grain size distribution was investigated with the aim of incorporating them into the model in future.

Place, publisher, year, edition, pages
2015. Vol. 16, no 3, 653-673 p.
Keyword [en]
Flexible pavement, Unbound base, Deformation, Mathematical model, Repetitive loading
National Category
Applied Mechanics
Research subject
30 Road: Highway design, 32 Road: Pavement design
Identifiers
URN: urn:nbn:se:vti:diva-9290DOI: 10.1080/14680629.2015.1026382ISI: 000355728600009ScopusID: 2-s2.0-84930761752OAI: oai:DiVA.org:vti-9290DiVA: diva2:908769
Available from: 2016-03-03 Created: 2016-03-02 Last updated: 2016-08-23Bibliographically 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