Evaluating the Effect of Binder Aging and Mineral Fillers on Moisture Susceptibility of Asphalt Concrete Using Surface Free Energy

Z. Al Basiouni Al Masri, A. Alarab, G. R. Chehab, A. R. Tehrani-Bagha

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

The concept of surface free energy was utilized to assess the effect of binder aging, mineral fillers, and aggregate type on the moisture damage resistance of asphalt concrete. A known methodology was used to quantify the dry and wet adhesive bond energies between four types of asphalt mastics and two types of aggregates. Furthermore, the effect of binder aging was evaluated by testing asphalt mastics with different aging conditions: non-aged, RTFO-aged (short-term aging), and PAV-aged (long-term aging). The compatibility ratio (CR) was then quantified for each mastic-aggregate combination and used as an indicator of moisture resistance of asphalt mixtures. Results confirmed that granite aggregates are more prone to moisture damage than limestone aggregates. Furthermore, cement and lime mastics enhanced the resistance of the system to moisture damage compared to limestone filler, which resulted in higher moisture susceptibility. Finally, results also revealed that aged mastics lead to lower CR, which suggests that moisture susceptibility of asphalt mixtures increases as the pavement ages.

Original languageEnglish
Title of host publicationAirfield and Highway Pavements 2019
Subtitle of host publicationTesting and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019
EditorsImad L. Al-Qadi, Hasan Ozer, Andreas Loizos, Scott Murrell
PublisherAMERICAN SOCIETY OF CIVIL ENGINEERS
Pages302-312
Number of pages11
ISBN (Electronic)9780784482469
DOIs
Publication statusPublished - 1 Jan 2019
MoE publication typeA4 Article in a conference publication
EventInternational Airfield and Highway Pavements Conference - Chicago, United States
Duration: 21 Jul 201924 Jul 2019

Publication series

NameAirfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019

Conference

ConferenceInternational Airfield and Highway Pavements Conference
CountryUnited States
CityChicago
Period21/07/201924/07/2019

Fingerprint

Dive into the research topics of 'Evaluating the Effect of Binder Aging and Mineral Fillers on Moisture Susceptibility of Asphalt Concrete Using Surface Free Energy'. Together they form a unique fingerprint.

Cite this