TY - GEN
T1 - Evaluating the Effect of Different Moisture Conditioning Protocols on Asphalt Concrete Moisture Damage Resistance
AU - Solaimanian, Mansour
AU - Milander, Scott M.
N1 - Publisher Copyright:
© 2023 Airfield and Highway Pavements 2023: Design, Construction, Condition Evaluation, and Management of Pavements - Selected Papers from the International Airfield and Highway Pavements Conference 2023. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Several laboratory test protocols exist as standards for evaluation of moisture damage resistance of compacted asphalt concrete mixtures: indirect tensile strength after freeze-thaw conditioning, performance evaluation when submerged under water and subjected to repeated wheel tracking, and measuring the strength or modulus after conditioning of the mixture when subjected to moisture induced stress test (MIST). This study was undertaken to compare the conditioning effect from a freeze-thaw cycle, hot-water bath conditioning (no freeze), and the MIST conditioning. The dynamic modulus and indirect tensile strength of these asphalt mixtures were determined before and after conditioning. It was found that the tensile strength ratio (TSR) for the mixtures exposed to only the hot water bath was significantly lower than those subjected to the freeze-thaw cycle. Drop of mix modulus was observed as a result of moisture-induced damage, albeit to various degrees. Slightly a higher drop of modulus was observed from the freeze-thaw conditioning compared with the MIST conditioning for three of the mixtures.
AB - Several laboratory test protocols exist as standards for evaluation of moisture damage resistance of compacted asphalt concrete mixtures: indirect tensile strength after freeze-thaw conditioning, performance evaluation when submerged under water and subjected to repeated wheel tracking, and measuring the strength or modulus after conditioning of the mixture when subjected to moisture induced stress test (MIST). This study was undertaken to compare the conditioning effect from a freeze-thaw cycle, hot-water bath conditioning (no freeze), and the MIST conditioning. The dynamic modulus and indirect tensile strength of these asphalt mixtures were determined before and after conditioning. It was found that the tensile strength ratio (TSR) for the mixtures exposed to only the hot water bath was significantly lower than those subjected to the freeze-thaw cycle. Drop of mix modulus was observed as a result of moisture-induced damage, albeit to various degrees. Slightly a higher drop of modulus was observed from the freeze-thaw conditioning compared with the MIST conditioning for three of the mixtures.
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U2 - 10.1061/9780784484913.015
DO - 10.1061/9780784484913.015
M3 - Conference contribution
AN - SCOPUS:85165963889
T3 - Airfield and Highway Pavements 2023: Design, Construction, Condition Evaluation, and Management of Pavements - Selected Papers from the International Airfield and Highway Pavements Conference 2023
SP - 150
EP - 161
BT - Testing and Characterization of Pavement Materials
A2 - Garg, Navneet
A2 - Bhasin, Amit
A2 - Vandenbossche, Julie M.
PB - American Society of Civil Engineers (ASCE)
T2 - 2023 International Conference on Airfield and Highway Pavements
Y2 - 14 June 2023 through 17 June 2023
ER -