TY - GEN
T1 - Modification of Mix Design Characteristics to Improve Performance of In-Service Raveled Pavements in Arid Climatic Regions
T2 - 2023 International Conference on Airfield and Highway Pavements
AU - Ahmed, Taha
AU - Singh, Aditya
AU - Hajj, Elie
AU - Saad, Ahmad
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 - Arid climate conditions of Kuwait, along with the poor asphalt mix design characteristics, have further accelerated the rate of raveling of in-service pavements. Therefore, this study evaluated and modified Kuwait's current mix design characteristics. To carry out this study, two mix designs, that is, the traditional Marshall mix design used in Kuwait and the new Superpave mix design, were prepared as per specifications. Several key changes were implemented to the mix designs to improve their resistance to moisture damage and raveling. The mechanical properties of the two asphalt mixtures were evaluated through tensile strength ratio (TSR), Hamburg wheel track (HWT), and dynamic modulus (E*) tests. E∗ test was performed for both unconditioned (UC) and moisture-conditioned samples for one (1C) and three (3C) freeze-thaw cycles to capture the effect of moisture conditioning on the performance of the asphalt mixtures. Results showed that the recommended modifications to the current Kuwaiti mix design procedure were successful and proven to improve the moisture damage resistance of the mixture, which is a leading cause of the raveling of in-service asphalt pavements.
AB - Arid climate conditions of Kuwait, along with the poor asphalt mix design characteristics, have further accelerated the rate of raveling of in-service pavements. Therefore, this study evaluated and modified Kuwait's current mix design characteristics. To carry out this study, two mix designs, that is, the traditional Marshall mix design used in Kuwait and the new Superpave mix design, were prepared as per specifications. Several key changes were implemented to the mix designs to improve their resistance to moisture damage and raveling. The mechanical properties of the two asphalt mixtures were evaluated through tensile strength ratio (TSR), Hamburg wheel track (HWT), and dynamic modulus (E*) tests. E∗ test was performed for both unconditioned (UC) and moisture-conditioned samples for one (1C) and three (3C) freeze-thaw cycles to capture the effect of moisture conditioning on the performance of the asphalt mixtures. Results showed that the recommended modifications to the current Kuwaiti mix design procedure were successful and proven to improve the moisture damage resistance of the mixture, which is a leading cause of the raveling of in-service asphalt pavements.
KW - Arid Climate
KW - Dynamic Modulus
KW - Hamburg Wheel Track (HWT)
KW - Kuwait
KW - Moisture Damage
KW - Raveling
KW - Superpave
UR - http://www.scopus.com/inward/record.url?scp=85165997355&partnerID=8YFLogxK
U2 - 10.1061/9780784484913.008
DO - 10.1061/9780784484913.008
M3 - Conference contribution
AN - SCOPUS:85165997355
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 - 75
EP - 86
BT - Testing and Characterization of Pavement Materials
A2 - Garg, Navneet
A2 - Bhasin, Amit
A2 - Vandenbossche, Julie M.
PB - American Society of Civil Engineers (ASCE)
Y2 - 14 June 2023 through 17 June 2023
ER -