Prediction of temperatures within the depth of asphalt concrete layers and the modeling of temperature-dependent parameters for flexible road pavements design purposes

Introduction. The introduction to the paper highlights the aspects of the analysis of results of flexible road pavement load test which shall be related to the temperature-dependent characteristics of asphalt concrete. Problem statement. The issues of the paper concern the questions of prediction of temperature within the asphalt concrete layer by the BELLS mathematical model and also the adjustment of the flexible pavement’s assessment and design parameters to the reference temperatures. Purpose. The goal of the paper is to analyze the main provisions of the BELLS model and also provisions for modeling the basic temperature-dependent parameters taken into account when designing the flexible road pavements and which are based on the results of the construction stiffness and deflection basin measurements that were performed through the FWD (Falling-Weight Deflectometer) test.