TY - GEN
T1 - Investigating Performance of Cold In-Place Recycled Asphalt Sections Using Heavy-Weight Deflectometer Testing and Finite Element Modeling
AU - Huang, Chenchen
AU - Zhu, Cheng
AU - Mehta, Yusuf
AU - Offenbacker, Daniel
AU - Saidi, Ahmed
N1 - Publisher Copyright: © ASCE 2023.All rights reserved.
PY - 2023
Y1 - 2023
N2 - This study numerically investigated the responses of cold in-place recycled (CIR) asphalt sections in heavy-weight deflectometer (HWD) testing. A 3D finite element (FE) model was built for an instrumented pavement section containing a 71 mm CIR layer. To determine the appropriate mesh size and model dimension, simulation results generated from the elastic model were compared with predictions obtained from BAKFAA and KENPAVE software tools. Then, the linear viscoelastic model was used to capture the deformation of the surface asphalt layer, with its Prony series parameters determined from experimental dynamic complex modulus tests. Good agreements were achieved between the calculated surface deflection at various locations and the measured responses from field HWD testing, which validated this developed numerical model can be used to capture the deformation of CIR pavement sections. This study is expected to provide useful suggestions for innovative pavement design under more complex conditions in future research.
AB - This study numerically investigated the responses of cold in-place recycled (CIR) asphalt sections in heavy-weight deflectometer (HWD) testing. A 3D finite element (FE) model was built for an instrumented pavement section containing a 71 mm CIR layer. To determine the appropriate mesh size and model dimension, simulation results generated from the elastic model were compared with predictions obtained from BAKFAA and KENPAVE software tools. Then, the linear viscoelastic model was used to capture the deformation of the surface asphalt layer, with its Prony series parameters determined from experimental dynamic complex modulus tests. Good agreements were achieved between the calculated surface deflection at various locations and the measured responses from field HWD testing, which validated this developed numerical model can be used to capture the deformation of CIR pavement sections. This study is expected to provide useful suggestions for innovative pavement design under more complex conditions in future research.
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U2 - 10.1061/9780784484890.033
DO - 10.1061/9780784484890.033
M3 - Conference contribution
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 - 365
EP - 373
BT - Design, Construction, Condition Evaluation, and Management of Pavement
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 -