Evaluation of aging characteristics of bituminous roof coverings by thermo-mechanical analysis (TMA)

Four bituminous roof coverings have been subjected to various aging procedures including heat, UV irradiation and temperature/rain cycling. A specially modified TMA technique has been used for evaluation, depending on measurements of softening temperature. A comparison with mechanical test data has also been made. Some conclusions have been drawn with respect to influence of heat and UV radiation on the rate of degradation.