Effect of deicing agents on the low-temperature performance of asphalt concrete under freeze-thaw cycling conditions

Abstract

The wide application of asphalt concrete in road construction has brought convenience to human travel, but road icing requires the application of deicing agents to prevent traffic accidents. However, the use of a deicing agent will also cause damage to the pavement material, so this paper carries out the research on the low-temperature performance of asphalt concrete with different concentrations of deicing agent solutions through the freeze-thaw cycle test. The test results show that with the increase in the number of freeze-thaw cycles, the five concentrations of deicing agent solution corresponding to the flexural tensile strength and maximum flexural tensile strain are decreasing trend. Although the deicing agent solution has a certain effect on the flexural tensile strength and maximum flexural tensile strain, the main effect on the reduction of the low-temperature performance of asphalt concrete is the frost damage caused by the freeze-thaw cycle.