ABSTRACT
This study examines the cooling performance of porous asphalt pavement and the effectiveness of an addressed type of pavement for the mitigation of urban heat island effect by using FEM modeling. The city of Lahore is considered as a case study keeping in view the trends of changing temperature due to the invigorating urbanization process in Lahore. A FEM model was developed using material thermal properties and hot summer environmental conditions. The temperature data was collected from the Pakistan Meteorological Department (PMD). The developed model was used to identify the cooling efficiency of porous asphalt pavements. The model indicates a temperature drop of 6℃ at the surface when porous asphalt pavement was used instead of conventional dense-graded pavement. The Sensitivity analysis performed for all the factors (the wind velocity, solar radiations, daily peak air temperature, and daily lowest air temperature) indicates that increasing the intensity of solar radiation highly affect the pavement surface temperature.
