PREDICTING TEMPERATURE DISTRIBUTION IN HANOI REGION'S ASPHALT PAVEMENT THROUGH NUMERICAL SIMULATION

Abstract

This article presents determining the temperature distribution in asphalt pavement in the Hanoi area based on numerical simulation using FEM. Climate data were collected from freely available online data from the Federal Highway Administration of the United States. From this data, the surface temperature of the pavement was calculated, which served as the boundary condition for the heat transfer problem of the pavement. The results show that the pavement surface temperature is typically highest around 11 a.m. to 12 p.m., while the lowest temperature is typically around 4 a.m. to 6 a.m. The temperature inside the pavement layer is usually high between 10 a.m. and 4 p.m. when the strength and deformation resistance of the pavement are relatively low. In contrast, the temperature inside the pavement is low during the period between midnight and 6 a.m., when the asphalt concrete becomes brittle and is easy to crack. The analysis of the temperature distribution in the pavement structure can be used for calculating and designing the pavement, as well as predicting pavement rutting.