TY - JOUR
T1 - Insulated pavement analysis based on a thermo-hydro-mechanical (THM) coupled finite element model
AU - Zhuo, Zhuang
AU - Ali, Ayman
AU - Xie, Zhaoxing
AU - Mehta, Yusuf
AU - Zhu, Cheng
AU - Lein, Wade
AU - Decarlo, Christopher
AU - Elshaer, Mohamed
N1 - Funding Information: acknowledge the support of National Science -Kvina Power Company for sharing information. Funding Information: This study is supported by an NSERC (file no. 505755 - 16) Engage Grant held by Jan Adamowski. The GCM -based AMPs were provided by Pablo Jaramillo. We also thank Mr. Alain Charron for his support of this project and provision of hourly precipitation data. Funding Information: The authors are grateful for the financial support provided by the Ministry of Science and Technology (MOST) Shackleton Program through Grant No. MOST108 -2638 -E-008 -001 -MY2 (Principal Investigator: Dr. Hsein Juang). The authors also wish to thank the Central Geological Survey of Taiwan for sponsoring the airborne LiDAR survey in the study area. Finally, but not least, we also want to thank Dr. Yu-Chen Lu for his assistance in reviewing the MCS results and the manuscript. Funding Information: This research was partly funded by Prince Sultan University with a grant number of PSU - CE-SEED-11, 2020. Also, it is supported by the Structures and Material (SM) Re& search Lab of Prince Sultan University. Funding Information: In response to Hurricane Katrina, a multi -year study was performed for the US Department of Homeland Security to improve disaster recovery from flooding by way of emergency paving materials. This work was followed by several years of field aging research funded by the Mississippi Department of Transportation and supported by private industry. Chemical warm mix technologies were incorporated in all o f this work, and this paper assesses data collected over several years to assess the resiliency of paving materials containing chemical additives when they are initially used in challenging conditions such as emergency paving requiring very long haul times. This paper showed asphalt is a resilient material that should be part of conversations on how to respond to extreme events such as hurricanes or other natural disasters. Chemical warm mix technologies can simultaneously facilitate longer haul distances a nd keep the residual material less crack prone for service over time. Funding Information: The authors acknolw edge the support from the Research Grants Council of the Hong Kong SAR (No. C6012 -15G and No. 16206217). Funding Information: The authors would like to acknowledge Dr. Binod Tiwari and Jesse Bennett for training and technical assistance with the laboratory equipment. The authors would also like to thank Boral Resources and Hejintao Huang for their assistance in characterizing the brushfire ashes. This work was performed in part at the Georgia Tech Institute for Electronics and Nanotechnology, a member of the National Nanotechnology Coordinated Infrastructure, which is supported by the National Science Foundation (Grant ECCS -154217 4). Publisher Copyright: © 2021 American Society of Civil Engineers (ASCE). All rights reserved.
PY - 2021
Y1 - 2021
N2 - Flexible pavements in cold regions are subjected to severe environmental conditions. Adding an insulating layer into a regular flexible pavement structure can reduce the frost penetration depth and mitigate uneven frost heave. This study used a thermo-hydro-mechanical coupled model to evaluate the pavement responses for pavements insulated with extruded polystyrene (XPS) boards. Model input parameters were calibrated with experimental and simulation data obtained from a large-scale insulated pavement box and Layered Elastic Analysis. Moreover, the potential application of the simulation results for the structure design of insulated pavement was demonstrated. Numerical simulation results validate that the presence of the insulation layer can efficiently reduce the frost penetration depth, whereas might induce loading capacity and drainage issues.
AB - Flexible pavements in cold regions are subjected to severe environmental conditions. Adding an insulating layer into a regular flexible pavement structure can reduce the frost penetration depth and mitigate uneven frost heave. This study used a thermo-hydro-mechanical coupled model to evaluate the pavement responses for pavements insulated with extruded polystyrene (XPS) boards. Model input parameters were calibrated with experimental and simulation data obtained from a large-scale insulated pavement box and Layered Elastic Analysis. Moreover, the potential application of the simulation results for the structure design of insulated pavement was demonstrated. Numerical simulation results validate that the presence of the insulation layer can efficiently reduce the frost penetration depth, whereas might induce loading capacity and drainage issues.
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U2 - https://doi.org/10.1061/9780784483701.034
DO - https://doi.org/10.1061/9780784483701.034
M3 - Conference article
SN - 0895-0563
VL - 2021-November
SP - 358
EP - 367
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
IS - GSP 330
T2 - Geo-Extreme 2021: Infrastructure Resilience, Big Data, and Risk
Y2 - 7 November 2021 through 10 November 2021
ER -