Study of factors influencing gussasphalt mixture performance

摘要

Effects of mixture content, binder type, mixture gradation, modifier, and stirring time on properties of gussasphalt mixtures are investigated by fluidity, penetration, high-temperature rutting, and lowtemperature bending tests. It is found that gradation and asphalt content have a strong influence and should therefore be strictly controlled during the preparation of gussasphalt mixtures. The use of a macadam coating and the addition of a modifier have strong effects on the dynamic stability of gussasphalt mixtures. The preparation technique has a strong influence on the quality of the mixture, with the optimal stirring time in the cooker being about 3 h. (C) 2015 Elsevier Ltd. All rights reserved.