Moisture susceptibility and fatigue performance of hydrated lime-modified asphalt concrete : experiment and design application case study

Al-Tameemi, AF; Wang, Y; Albayati, A; Haynes, BJ

Abstract

Hydrated lime has been recognized as an effective additive used to improve asphalt concrete properties in pavement applications. However, further work is still needed to quantify the effect of hydrated lime on asphaltic concrete performance under varied weather, temperature and environmental conditions and in the application of different pavement courses. A research project has been conducted using hydrated lime to modify the asphalt concretes used for the applications of wearing (surface), levelling (binder) and base courses. A previous publication has reported the experimental study on the resistance to Marshall stability and the volumetric properties, the resilient modulus and permanent deformation at three different weather temperatures. This paper reports the second phase experimental study for material durability, which investigated the effect of hydrated lime content on moisture susceptibility when exposed to a freeze-thaw cycle, and the fatigue life. The experimental results show an improvement in the durability of the modified asphalt concrete mixtures. Optimum hydrated lime contents for different course applications are suggested based on the series experimental studies. Finally, the advantage of using the optimum mixtures for a pavement application is demonstrated.

Citation

Al-Tameemi, A., Wang, Y., Albayati, A., & Haynes, B. (2019). Moisture susceptibility and fatigue performance of hydrated lime-modified asphalt concrete : experiment and design application case study. Journal of Materials in Civil Engineering, 31(4), 04019019. https://doi.org/10.1061/%28ASCE%29MT.1943-5533.0002634

• Journal Article Type: Article
• Acceptance Date: Sep 7, 2018
• Online Publication Date: Jan 30, 2019
• Publication Date: Apr 1, 2019
• Deposit Date: Nov 12, 2018
• Publicly Available Date: Jan 30, 2019
• Journal: Journal of Materials in Civil Engineering
• Print ISSN: 0899-1561
• Electronic ISSN: 1943-5533
• Publisher: Coasts, Oceans, Ports and Rivers Institute
• Volume: 31
• Issue: 4
• Pages: 04019019
• DOI: https://doi.org/10.1061/%28ASCE%29MT.1943-5533.0002634
• Publisher URL: https://doi.org/10.1061/(ASCE)MT.1943-5533.0002634
• Related Public URLs: https://ascelibrary.org/journal/jmcee7
• Additional Information: Additional Information : This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at: https://doi.org/10.1061/(ASCE)MT.1943-5533.0002634.