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

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

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.

AlkuperäiskieliEnglanti
OtsikkoAirfield and Highway Pavements 2019
AlaotsikkoTesting and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019
ToimittajatImad L. Al-Qadi, Hasan Ozer, Andreas Loizos, Scott Murrell
KustantajaAMERICAN SOCIETY OF CIVIL ENGINEERS
Sivut302-312
Sivumäärä11
ISBN (elektroninen)9780784482469
DOI - pysyväislinkit
TilaJulkaistu - 1 tammikuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Airfield and Highway Pavements Conference - Chicago, Yhdysvallat
Kesto: 21 heinäkuuta 201924 heinäkuuta 2019

Julkaisusarja

NimiAirfield 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
Maa/AlueYhdysvallat
KaupunkiChicago
Ajanjakso21/07/201924/07/2019

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