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Evaluation of the predictive models used in the new swedish mechanistic-empirical design module
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.ORCID iD: 0000-0003-0889-6078
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.ORCID iD: 0000-0002-0596-228X
2012 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 13, no 2, 300-311 p.Article in journal (Other academic) Published
Abstract [en]

In order to perform thickness design of flexible pavements based on the HMA fracture mechanics framework prior to construction, the tensile strength and creep power law parameters of the mixture has to be determined. As samples are normally not available in the design stage, these properties will have to be modelled rather than determined in a laboratory. This paper evaluates material models based on the relationship between dynamic (complex) modulus and creep compliance in order to predict tensile strength and creep power law parameters for a mixture. For this evaluation, fourteen field sections from the United States have been used for verification and the results indicate that the crack resistance of a mixture can indeed be estimated without a development of extensive empirical relations between mixture properties and crack-resistance.

Place, publisher, year, edition, pages
2012. Vol. 13, no 2, 300-311 p.
Keyword [en]
top-down cracking, mechanistic pavement design, material modelling, IDT, Creep compliance, dissipated creep strain energy
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-33802DOI: 10.1080/14680629.2012.677993ISI: 000305761500007Scopus ID: 2-s2.0-84863622971OAI: oai:DiVA.org:kth-33802DiVA: diva2:417876
Note
Updated from submitted to published.QC20120724Available from: 2011-05-18 Created: 2011-05-18 Last updated: 2017-12-11Bibliographically approved
In thesis
1. Implementation and evaluation of an HMA fracture mechanics based design module
Open this publication in new window or tab >>Implementation and evaluation of an HMA fracture mechanics based design module
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

A thickness design module for flexible pavements, based on the HMA fracture mechanics framework, has been developed in order to design against premature failure caused by cracking. The HMA fracture mechanics based design module has been evaluated by designing typical Swedish pavements under typical Swedish climate and loading conditions and comparing the results with a reference design framework. The integrated set of material models predicting the necessary material strength- and creep compliance parameters for crack resistance evaluation within this framework has been evaluated against a number of field cores tested.

Results show that the design module developed is able to accurately predict cracking in Swedish flexible pavements, indicating that the principles behind the design procedure are fundamental and that the material models used are able to make qualitative predictions of the individual material properties used to estimates a mixtures’ resistance to cracking.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2011. v, 62 p.
Series
Research report. Avd. för vägteknik, Kungl. Tekniska högskolan, 2011:07
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-33748 (URN)978-91-7501-010-6 (ISBN)
Presentation
2011-05-20, B 25, KTH, Brinellvägen 23, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20110518

Available from: 2011-05-18 Created: 2011-05-16 Last updated: 2014-01-22Bibliographically approved

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Birgisson, BjörnJelagin, Denis

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