Performance-based assessment of rutting resistance of asphalt mixes designed for hot climate regions
In hot climate regions asphalt mixes can be designed using the classical volumetric approach supplemented by the evaluation of basic mechanical parameters. To minimize the risk of permanent deformation, composition of the mixes can be defined by selecting densely packed aggregates and low binder contents. Despite the effectiveness of such an approach, mix design systems need to be improved by including performance-based tests that focus on the evaluation of the true rutting potential of asphalt mixes. The investigation described in this paper addressed these issues by considering twelve rut-resistant asphalt mixes designed as per the requirements set in the State of Qatar. These mixes, containing neat and polymer-modified binders (PMBs), were subjected to the Hamburg Wheel-Track Test (HWTT), dynamic modulus test and flow number test. Analysis of experimental data led to tentative requirements set on the results of dry HWTTs that can be introduced in the mix design framework currently adopted in the State of Qatar. Calculation of rank correlation coefficients showed that the various tests can be employed in different conditions for the assessment of the true rutting potential of asphalt mixes.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/44544515
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Supplemental Notes:
- © 2020 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
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Authors:
- Sebaaly, Haissam
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0000-0002-1925-5818
- Riviera, Pier Paolo
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0000-0003-1097-8670
- Varma, Sudhir
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0000-0003-1944-7833
- Maina, James W
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0000-0002-6927-7265
- Santagata, Ezio
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0000-0002-5548-4095
- Publication Date: 2022-6
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 2448-2459
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Serial:
- International Journal of Pavement Engineering
- Volume: 23
- Issue Number: 7
- Publisher: Taylor & Francis
- ISSN: 1029-8436
- Serial URL: http://www.tandf.co.uk/journals/titles/10298436.html
Subject/Index Terms
- TRT Terms: Asphalt mixtures; Hot weather; Laboratory tests; Mix design; Performance tests; Polymer asphalt; Rutting
- Identifier Terms: Hamburg Wheel Tracking Device
- Geographic Terms: Qatar
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 01848424
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 13 2022 12:33PM