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Influence of moisture on Resilient 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.
2014 (English)In: Asphalt Pavements: Proceedings of the International Conference on Asphalt Pavements, ISAP 2014, 2014, 571-580 p.Conference paper (Refereed)
Resource type
Text
Abstract [en]

This study investigated the influence of moisture on the Resilient Deformation (RD) properties of Unbound Granular Materials (UGMs). A typical UGM used in pavement constructions with three different grain size distributions were tested with a range of moisture contents using Repeated Load Triaxial tests (RLTTs). From the European standard, the procedure for the study of the RD behaviour was used where each stress path is applied for 100 cycles. Additionally, the Multi-Stage (MS) loading procedure for the study of the permanent deformation behaviour were used where each stress path is applied for 10,000 cycles, to compare the results using the two test procedures. Results showed that resilient modulus (MR) generally decreased with increase in moisture, where the finer grading was more affected. However, for the MS RLTTs, after a large number of load applications, some increase in MR with increasing moisture was observed. This happened when the moisture content increased up to close to the optimum; above the optimum, MR always decreased. This may be due to Post-Compaction (PC) aided by moisture in MS RLTTs where a large number of load cycles were applied.

Place, publisher, year, edition, pages
2014. 571-580 p.
Keyword [en]
Moisture, Unbound roadbase, Triaxial, Elasticity, Modulus of elasticity, Particle size distribution
National Category
Applied Mechanics
Research subject
30 Road: Highway design, 32 Road: Pavement design
Identifiers
URN: urn:nbn:se:vti:diva-9375ScopusID: 2-s2.0-84904137196ISBN: 9781138027121 (print)OAI: oai:DiVA.org:vti-9375DiVA: diva2:912059
Conference
12th International Conference on Asphalt Pavements, ISAP 2014, 1 June 2014 through 5 June 2014, Raleigh, NC
Available from: 2016-03-15 Created: 2016-03-02 Last updated: 2016-03-17Bibliographically approved

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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