Performance Evaluation of Elvaloy as a Fuel-Resistant Polymer in Asphaltic Concrete Airfield Pavements
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 10
Abstract
This paper investigates the influence of fuel-resistant polymer on the consistency and performance properties of asphalt binder and hot mix asphalt (HMA) mixtures. The study uses wearing course gradation (nominal maximum size of 19 mm), penetration grade 60/70 bitumen, and Elvaloy reactive elastomeric terpolymers (RET) 4170 as a fuel-resistant polymer. Laboratory tests conducted on unmodified and modified (1–4% Elvaloy) mixtures include an indirect tensile (IDT) strength test and a resilient modulus () test for evaluating cracking potential and stiffness parameters, respectively; a Hamburg wheel tracker (HWT) test for quantifying the rut propensity; and a solubility test to determine the fuel-resistance capacity. The two-level factorial design of the experiment is conducted on the rheological properties of the binder including elastic recovery/complex modulus and creep stiffness values, which suggest that 1% polymer-modified binder (PMB) is least susceptible to high-temperature and low-temperature variations. Performance evaluation reveals that 1% PMB is an optimal proportion of Elvaloy in asphalt concrete mixtures, yielding maximum values (both before and after conditioning in fuel), the lowest rut susceptibility, and high fuel resistance. This research is useful for public aviation/highway agencies and private contractors to minimize the deterioration caused by fuel slippage and to control foreign object debris damage to aircraft.
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Acknowledgments
The authors gratefully acknowledge the support of laboratory staff of the National Institute of Transportation and Highway Research & Training Center Laboratories in performing laboratory test for this research study. The authors are grateful for reviewers’ insight and contribution in improving the manuscript.
Disclaimer
The contents of this article reflect the views of the authors, who are responsible for the facts and the accuracy of the data and the results presented herein. This is a technical article and does not constitute a standard or a regulation.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 10 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Sep 18, 2016
Accepted: Mar 22, 2017
Published online: Jun 23, 2017
Published in print: Oct 1, 2017
Discussion open until: Nov 23, 2017
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