Packing theory-based framework to evaluate permanent deformation of unbound granular materials
2013 (English)In: The international journal of pavement engineering, ISSN 1029-8436, Vol. 14, no 3, 309-320 p.Article in journal (Refereed) Published
Permanent deformation of unbound granular materials plays an essential role in the long-term performance of a pavement structure. Stability of unbound granular materials is defined by the particle-to-particle contact of the system, the particle size distribution and the packing arrangement. This paper presents a gradation model based on packing theory to evaluate permanent deformation of unbound granular materials. The framework was evaluated by using 10 unbound granular materials from different countries. The disruption potential, which determines the ability of secondary structure (SS) to disrupt the primary structure (PS), is introduced. This study also identified the amount of PS and SS that may eventually be used as a design parameter for permanent deformation of unbound road layers. The evaluation of the model regarding permanent deformation behaviour of granular materials is found to compare favourably with experimental results.
Place, publisher, year, edition, pages
Taylor & Francis, 2013. Vol. 14, no 3, 309-320 p.
gradation, unbound materials, packing theory, primary structure, secondary structure, disruption potential, permanent deformation
IdentifiersURN: urn:nbn:se:kth:diva-97750DOI: 10.1080/10298436.2012.736620ISI: 000322305800008ScopusID: 2-s2.0-84873576997OAI: oai:DiVA.org:kth-97750DiVA: diva2:533656
QC 20150625. Updated from submitted to published.2012-06-142012-06-142015-07-21Bibliographically approved