Temperature - Introduction

As is well known, the behaviour of asphalt bound materials is extremely temperature dependent. Therefore, a model that estimates temperature profiles in the pavement structure at any particular moment of the pavement’s life is an important part of any predictive tool.
The model that is initially being implemented in this software is based on the generally established Dempsey model. This procedure consists first in calculating an energy balance at the pavement’s surface at any particular time in order to estimate the amount of energy entering (or leaving) the pavement due to radiation and convection, then using a finite differences approach to simulate how heat is transferred through the pavement layers at any particular depth.
The model has been validated against the Mechanical Empirical Pavement Design Guide (ME-PDG) climatic model and against real data collected in the US and available on their Long Term Pavement Performance (LTPP) database.

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