| In winter, when the asphalt pavement snow ice freeze, this phenomenon not only affectsthe efficiency of road traffic, but also seriously endangers traffic safety. The salt anti-freezingasphalt pavement is a new pavement, mixed with the materials which can lower the freezingpoint, and can achieve the function of snowmelt ant-freezing. In this paper, we study thedurability and perdurability of salt anti-freezing asphalt pavement, which have importantengineering value and practical significance.In this paper, basis on the research of the salt anti-freezing asphalt pavement at homeand abroad, we analyse and calculate the final void and law of the change of volume index,according to the separation out of salt; Based on the existing test method of water stability,high temperature performance, low temperature performance, fatigue performance of asphaltmixture,we study the durability of salt anti-freezing asphalt mixture and propose improvementmeasures of the mixture; At the same time, we study effect of salt’s solution and precipitationto mixture, conduct the comparison durability test of salt anti-freezing asphalt mixture andordinary asphalt mixture, obtain the variation of asphalt mixture performance; we study theaffect of temperature and rainfall to perdurability of salt anti-freezing asphalt pavement,analyse the effect of summer rainfall to the performance of anti-freezing, predict service lifeof salt anti-freezing asphalt pavement for different climatic partition. |
