Study on Low Temperature Performance Evaluation Index of Asphalt Mixture Based on Bending Test at Low Temperature

摘要

In order to characterize how the temperature influence Low Temperature anti-cracking performance and the ability of asphalt mixture resist low temperature, on the basis of bending test at low temperature, this paper from the angle of energy, introduce the concept of failure energy per unit volume as the evaluation index for the low temperature performance of asphalt mixture. Meanwhile, this paper used this evaluation index to perform bending test at low temperature for two kinds of different type of asphalt mixture which under three temperature as follows: 0°C, -10°C, -20°C, And separately calculated failure energy per unit volume, then analyzes the characteristics and regularity of the index.