TY - GEN
T1 - Laboratory Study on the Effect of Confinement on the Dynamic Complex Modulus of Porous Asphalt Mixtures
AU - Carroll, Jessica
AU - Simonsen, Scott
AU - Rosas, Ty
AU - Siddique, Abu Bakar Md
AU - Eleyedath, Abhary
AU - Ali, Ayman
AU - Mehta, Yusuf
N1 - Publisher Copyright:
© ASCE.
PY - 2025
Y1 - 2025
N2 - The impact of confinement pressure is more substantial in open-graded porous asphalt mixtures with a higher air void content (>16%) than in dense-graded mixtures. This study aims to evaluate the effect of confinement on the dynamic modulus (|E*|) values of porous asphalt mixtures. The full-size samples were evaluated under confined (10, 20, and 30 psi) and unconfined conditions. At 30 psi, the |E*| value decreased at lower temperatures and higher frequency. The values increased in all the other testing conditions, and this difference was substantial at lower frequencies and higher temperatures. The confined |E*| values at 21.1°C, 10 Hz, and 20 psi were 16%-35% higher than the unconfined values. Damage analysis showed that the pavement design life increased twice with a 16% increase in the |E*| value. The outcome of this study will help identify the most appropriate |E*| values for representing the field confinement condition in porous pavements.
AB - The impact of confinement pressure is more substantial in open-graded porous asphalt mixtures with a higher air void content (>16%) than in dense-graded mixtures. This study aims to evaluate the effect of confinement on the dynamic modulus (|E*|) values of porous asphalt mixtures. The full-size samples were evaluated under confined (10, 20, and 30 psi) and unconfined conditions. At 30 psi, the |E*| value decreased at lower temperatures and higher frequency. The values increased in all the other testing conditions, and this difference was substantial at lower frequencies and higher temperatures. The confined |E*| values at 21.1°C, 10 Hz, and 20 psi were 16%-35% higher than the unconfined values. Damage analysis showed that the pavement design life increased twice with a 16% increase in the |E*| value. The outcome of this study will help identify the most appropriate |E*| values for representing the field confinement condition in porous pavements.
UR - https://www.scopus.com/pages/publications/105010517979
UR - https://www.scopus.com/pages/publications/105010517979#tab=citedBy
U2 - 10.1061/9780784486238.019
DO - 10.1061/9780784486238.019
M3 - Conference contribution
AN - SCOPUS:105010517979
T3 - Airfield and Highway Pavements 2025: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2025
SP - 206
EP - 214
BT - Airfield and Highway Pavements 2025
A2 - Ozer, Hasan
A2 - Watkins, Quintin
PB - American Society of Civil Engineers (ASCE)
T2 - International Airfield and Highway Pavements Conference 2025: Testing and Characterization of Pavement Materials
Y2 - 8 June 2025 through 11 June 2025
ER -