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Evaluation of a permanent deformation model for asphalt concrete mixtures using extra-large wheel-tracking and heavy vehicle simulator tests
Statens väg- och transportforskningsinstitut, Infrastruktur, INFRA, Väg- och banteknik, VBA.
Statens väg- och transportforskningsinstitut, Infrastruktur, INFRA, Väg- och banteknik, VBA.
2015 (engelsk)Inngår i: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 16, nr 1, s. 154-171Artikkel i tidsskrift (Fagfellevurdert) Published
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Text
Abstract [en]

This paper evaluates a mechanistic–empirical permanent strain model for asphalt concrete mixtures. The evaluation was carried out based on two different types of tests: an extra-large wheel-tracking (ELWT) test and a full-scale accelerated pavement test using a heavy vehicle simulator (HVS). Asphalt slabs from three different types of asphalt mixtures were prepared for the ELWT test and tested at several pavement temperatures and tyre inflation pressures. Lateral wandering was also incorporated.

The measured permanent deformations in the asphalt slabs were thereafter modelled using the permanent strain model from the US Mechanistic-Empirical Pavement Design Guide and model parameters were estimated for the three types of mixes. For validation, data from an HVS tested pavement structure consisting of the same asphalt mixtures as those tested using the ELWT were used. A set of calibration factors for the three mixtures were therefore obtained between the two tests. In all cases, the calibration factors were within ±20% from unity. Differences in geometry, scale, wheel loading configuration as well as the speed of loading between the two test devices could be the possible reasons for the differences in observed calibration factors.

sted, utgiver, år, opplag, sider
2015. Vol. 16, nr 1, s. 154-171
Emneord [en]
Flexible pavement, Bituminous mixture, Mathematical model, Strain, Simulation, Loading
HSV kategori
Forskningsprogram
30 Road: Highway design, 32 Road: Pavement design
Identifikatorer
URN: urn:nbn:se:vti:diva-9307DOI: 10.1080/14680629.2014.987311ISI: 000349451300010Scopus ID: 2-s2.0-84922800575OAI: oai:DiVA.org:vti-9307DiVA, id: diva2:908623
Tilgjengelig fra: 2016-03-03 Laget: 2016-03-02 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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Ahmed, Abubeker W.Erlingsson, Sigurdur
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