Influence of Complex Service Factors on Ravelling Resistance Performance for Porous Asphalt Pavements

The study aims to analyze the influence of complex service factors on ravelling resistance performance for large-void asphalt pavements by carrying out tests on environmental and vehicle factors, conducting ultraviolet aging, freeze–thaw cycles, as well as vehicle speed simulated tests with the Rotating Surface Abrasion Test, vehicle tests, and traffic volume tests, and by making a correlation analysis between the Cantabro Abrasion test and Rotating Surface Abrasion Test. The result shows that environmental factors significantly affect the ravelling resistance performance of drainage asphalt pavements. With the increase in the times of UV aging and freeze–thaw cycles, the ravelling loss rate of asphalt specimens shows a tendency to increase, and the combined test of UV aging and freeze–thaw cycles aggravated the ravelling damage of asphalt specimens. Meanwhile, vehicle factors have a significant attenuation effect on the ravelling resistance performance of drainage asphalt pavements. With the increase in the speed, pressure, and times of the Rotating Surface Abrasion, the ravelling loss rate of asphalt specimens shows a steady tendency to increase. Furthermore, there exists a good correlation between the Rotating Surface Abrasion speed, pressure, times, and the ravelling loss rate. Finally, the two test results of the Cantabro Abrasion test and Rotating Surface Abrasion test are consistent in their changes during single/composite factor analysis, confirming the feasibility of using the Rotating Surface Abrasion test index to characterize the change in the ravelling resistance performance of drainage asphalt pavements.

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