Characterization of damage and aging resistance of asphalt mastics with coal combustion by-products

Emil G. Bautista, Ahmed F. Faheem, Rajan Saha, Konstantin Sobolev

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

4 Scopus citations

Abstract

In this study, two asphalt binders are blended with four particulate types; one natural filler and three Coal Combustion By-Products (CCPs), to make mastics at different concentrations. This initial study aims to evaluate the compatibility of different asphalt binders with these particulates in terms of damage and aging resistance. High and intermediate temperature testing is conducted while varying the aging level. Results show tha the particulates, at all concentrations, improve high temperature rutting resistance of mastics. At intermediate temperature, the results show significant dependency on particulate, binder and polymer modification types. In general, results show that CCP mastics with unmodified binders increase damage resistance at high temperature, with no determinate effect on aging related stiffness. For the polymer modified binder, Spray Dryer Absorber (SDA) appears to enhance its properties significantly as noticed by increase damage resistance, recovery, and significant retardation in aging related stiffness.

Original languageBritish English
Title of host publicationAirfield and Highway Pavements 2015
Subtitle of host publicationInnovative and Cost-Effective Pavements for a Sustainable Future - Proceedings of the 2015 International Airfield and Highway Pavements Conference
EditorsJohn T. Harvey, Katie F. Chou
PublisherAmerican Society of Civil Engineers (ASCE)
Pages74-85
Number of pages12
ISBN (Electronic)9780784479216
DOIs
StatePublished - 2015
Event2015 International Airfield and Highway Pavements Conference: Innovative and Cost-Effective Pavements for a Sustainable Future - Miami, United States
Duration: 7 Jun 201510 Jun 2015

Publication series

NameAirfield and Highway Pavements 2015: Innovative and Cost-Effective Pavements for a Sustainable Future - Proceedings of the 2015 International Airfield and Highway Pavements Conference

Conference

Conference2015 International Airfield and Highway Pavements Conference: Innovative and Cost-Effective Pavements for a Sustainable Future
Country/TerritoryUnited States
CityMiami
Period7/06/1510/06/15

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