Aging of Asphalt from Warm Mix Asphalt Mixture During Construction

Abstract:

Asphalt is recovered by extraction and distillation from mixture,and tests on the performance of the asphalt recovered at different construction temperatures are carried out.Test results show that the aging of asphalt becomes faster with the increase of temperature.The viscosity-temperature variation trends show that the asphalt aging accelerates sharply when the construction temperature of mixture reaches 150 ℃.Warm mix asphalt(for example,mixing temperature at 100 ℃ or 120 ℃)can greatly reduce the aging of asphalt.