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Stiffness and permanent deformation characteristics of open-graded unbound granular materials
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology.ORCID iD: 0000-0002-5871-7587
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology.ORCID iD: 0000-0002-4256-3034
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology.
2018 (English)In: Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017, CRC Press/Balkema , 2018, p. 151-157Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents the investigation of the deformation characteristics of two Open-Graded (OG) Unbound Granular Materials (UGMs) that are generally used in permeable pavement structures. Based on multistage Repeated-Load Triaxial (RLT) tests, the stiffness and resistance against Permanent Deformation (PD) of these materials were compared to their well graded (standard) counterparts. The OG UGMs showed similar stiffness characteristics as standard UGMs. On the other hand, the resistance against PD was slightly worse than the standard UGMs in a relatively dry state. However, the OG UGMs showed less sensitivity to moisture variation, yielding similar performance to that of standard materials at higher moisture content. The parameters of a stiffness model and a PD model were evaluated for these materials which may be used for prediction of rutting, estimating bearing capacity and for layer thickness design, using any suitable pavement design software.

Place, publisher, year, edition, pages
CRC Press/Balkema , 2018. p. 151-157
Keywords [en]
Deformation, Unbound base, Open graded mix, Triaxial, Stiffness, Resistance (mater), Rutting (wheel), Moisture content
National Category
Infrastructure Engineering
Research subject
30 Road: Highway design, 32 Road: Pavement design
Identifiers
URN: urn:nbn:se:vti:diva-13561DOI: 10.1201/9781315100333-23Scopus ID: 2-s2.0-85058565044ISBN: 9781138295957 (print)OAI: oai:DiVA.org:vti-13561DiVA, id: diva2:1283983
Conference
10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017, 28 June 2017 through 30 June 2017
Available from: 2019-01-30 Created: 2019-01-30 Last updated: 2019-03-14Bibliographically approved

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Rahman, Mohammad ShafiqurErlingsson, SigurdurHellman, Fredrik

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CiteExportLink to record
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  • apa
  • harvard1
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Output format
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