TY - GEN
T1 - Evaluating the Effect of Solar Radiations on the Performance of Asphalt Concrete Pavements
AU - Abdelaziz, Amal
AU - Ho, Chun Hsing
N1 - Publisher Copyright: © 2019, Springer International Publishing AG, part of Springer Nature.
PY - 2019
Y1 - 2019
N2 - In recent years, severe weather events have impacted the performance of transportation infrastructures. The increase in temperature and heatwaves, lead to the early deterioration of pavement structures. The purpose of this paper is to study the effect of solar radiations on the behavior of flexible pavements. A project was implemented in Flagstaff, Arizona, to evaluate the impact of solar radiations on asphalt concrete pavements. The analysis was performed using similar road sections with shaded and unshaded areas. A three-dimensional model of the study area was built using MicroStation, to generate solar analysis study using specified time periods. To validate the numerical analysis, field visits were conducted to measure pavement surface temperatures, and evaluate distress types along pavement surfaces for areas with solar exposure and areas without sun exposure. Bending Beam Rheometer (BBR) tests were performed to determine the stiffness of the asphalt mixtures. ANSYS, a finite element analysis software, was used to analyze the critical tensile and compressive strains exerted on the pavement. According to the results, pavement sections exposed to solar radiations, experience a significantly higher level of critical tensile and compressive strains compared to shaded pavement areas. Based on test findings and analysis results, the paper concluded that solar radiations lead to the early deterioration of asphalt pavements by increasing fatigue distress and rutting.
AB - In recent years, severe weather events have impacted the performance of transportation infrastructures. The increase in temperature and heatwaves, lead to the early deterioration of pavement structures. The purpose of this paper is to study the effect of solar radiations on the behavior of flexible pavements. A project was implemented in Flagstaff, Arizona, to evaluate the impact of solar radiations on asphalt concrete pavements. The analysis was performed using similar road sections with shaded and unshaded areas. A three-dimensional model of the study area was built using MicroStation, to generate solar analysis study using specified time periods. To validate the numerical analysis, field visits were conducted to measure pavement surface temperatures, and evaluate distress types along pavement surfaces for areas with solar exposure and areas without sun exposure. Bending Beam Rheometer (BBR) tests were performed to determine the stiffness of the asphalt mixtures. ANSYS, a finite element analysis software, was used to analyze the critical tensile and compressive strains exerted on the pavement. According to the results, pavement sections exposed to solar radiations, experience a significantly higher level of critical tensile and compressive strains compared to shaded pavement areas. Based on test findings and analysis results, the paper concluded that solar radiations lead to the early deterioration of asphalt pavements by increasing fatigue distress and rutting.
KW - Asphalt
KW - Critical strains
KW - Fatigue
KW - Pavement
KW - Rutting
KW - Solar radiation
UR - http://www.scopus.com/inward/record.url?scp=85101412740&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85101412740&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-95789-0_9
DO - 10.1007/978-3-319-95789-0_9
M3 - Conference contribution
SN - 9783319957883
T3 - Sustainable Civil Infrastructures
SP - 90
EP - 103
BT - Testing and Characterization of Asphalt Materials and Pavement Structures - Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes
A2 - Zhang, Kun
A2 - Xu, Rongqiao
A2 - Chen, Shih-Huang
PB - Springer Science and Business Media B.V.
T2 - 5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018
Y2 - 23 July 2018 through 25 July 2018
ER -