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Effect of aggregate gradation on the stiffness of asphalt mixtures

Al-Mosawe, Hasan; Thom, Nick; Airey, Gordon; Ai-Bayati, Amjad

Authors

Hasan Al-Mosawe

NICK THOM NICHOLAS.THOM@NOTTINGHAM.AC.UK
Assistant Professor

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GORDON AIREY GORDON.AIREY@NOTTINGHAM.AC.UK
Professor of Pavement Engineering Materials

Amjad Ai-Bayati



Abstract

Aggregate gradation plays an important role in the behaviour of asphalt mixtures. Packing of aggregate is a very important factor that will be affected by changing the aggregate gradation. Many researchers have investigated different ways of describing packing both theoretically and practically. Bailey ratios have recently been used to understand the volumetric properties of mixtures. In this paper, the Bailey ratios have been used, and two further ratios have also been introduced to allow the asphalt mixture gradation to be fully understood. Thirteen different aggregate gradations have been chosen within the 14 mm asphalt concrete specification to investigate the effect of particle size distribution on the stiffness of the mixture. It was found that variation in aggregate gradation has a significant effect on asphalt stiffness, even within specification limits, and a reasonable correlation between the set of ratios investigated and the Indirect Tensile Stiffness.

Citation

Al-Mosawe, H., Thom, N., Airey, G., & Ai-Bayati, A. (2015). Effect of aggregate gradation on the stiffness of asphalt mixtures. International Journal of Pavement Engineering and Asphalt Technology, 16(2), https://doi.org/10.1515/ijpeat-2015-0008

Journal Article Type Article
Acceptance Date Feb 11, 2015
Online Publication Date Jan 31, 2016
Publication Date Dec 10, 2015
Deposit Date Nov 10, 2016
Publicly Available Date Mar 28, 2024
Journal International Journal of Pavement Engineering and Asphalt Technology (PEAT)
Electronic ISSN 2051-8234
Publisher De Gruyter
Peer Reviewed Peer Reviewed
Volume 16
Issue 2
DOI https://doi.org/10.1515/ijpeat-2015-0008
Public URL https://nottingham-repository.worktribe.com/output/769537
Publisher URL https://www.degruyter.com/downloadpdf/j/ijpeat.2015.16.issue-2/ijpeat-2015-0008/ijpeat-2015-0008.xml

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%5BInternational%20Journal%20on%20Pavement%20Engineering%20%26%20Asphalt%20Technology%5D%20Effect%20of%20Aggregate%20Gradation%20on%20the%20Stiffness%20of%20Asphalt%20Mixtures.pdf (564 Kb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0




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