Correlation Analysis of the Segregation and Porosity of Asphalt mixture

Based on the SUP16 asphalt mixture,some experiments is made to study the performance of segregation asphalt mixture.An analysis is made of the influence of the gradation segregation and temperature segregation on the porosity of asphalt mixture,and the compaction degree and the evenness of pavement.The results shows that the coarse aggregate segregation has a greater influence than fine aggregate segregation on the performance of asphalt mixture under the different levels of segregation.The average porosity of the coarse aggregate segregation is 9.5 and water absorption is 2.0.the temperature of asphalt mixture has an great effect on the porosity.When the temperature is lower than discharging temperature,the porosity increases greatly and affects the compaction quality and smoothness of pavement hardly.