Effects of Temperature and Erosion on Fatigue Life of Asphalt Concrete 

Wolosick 

School of Civil Engineering, Greenwich University, Arkansas, 71953, America 

Abstract: In order to improve the fatigue performance of asphalt pavement in saline soil area, the SBS mod-ified asphalt concrete freeze-thaw splitting fatigue test and water saturated salt solution, the influence of tem-perature and Chloride Erosion under the combined effect of asphalt concrete freeze-thaw fatigue life attenua-tion. The results show that the temperature and chloride erosion is effect of asphalt concrete freezing and thawing important factors of fatigue life. When the number of freeze-thaw cycles is the same, the asphalt con-crete freeze-thaw fatigue life with freeze-thaw temperature decreased gradually decreased; when the freeze-thaw temperature is the same, the freeze-thaw fatigue life with freezing thawing times increased continuously decreased. Water was significantly lower than that of asphalt saturated salt solution in the freezing and thaw-ing of concrete fatigue life, indicating chloride can accelerate the attenuation of asphalt concrete freeze-thaw fatigue life, freeze-thaw temperature is lower, the salt freezing damage more serious. Based on the number of tests According to regression analysis shows that asphalt concrete freeze thaw fatigue life and freeze-thaw cycle times with good correlation, and the exponential function relation between the two can be utilized to predict the asphalt concrete freeze thaw fatigue life. 

Keywords: Splitting fatigue test; Asphalt concrete; Freezing and thawing fatigue life; Temperature; Chloride corrosion