Abstract:The influence of temperature segregation on the performance of asphalt pavement is analyzed.Ground penetrating radar (GPR) is used to measure the travel time of electromagnetic waves on asphalt pavement.Measuring the void ratio of the samples obtained from the drill core.Establishing a mathematical model for the void ratio of asphalt pavement and the two-way travel time of electromagnetic waves.Infrared thermal imager was used to measure the temperature of asphalt pavement during paving and rolling.The results were compared with the voids measured by GPR.Exploring the influence of temperature segregation on asphalt pavement during actual construction.Based on the technical means of asphalt pavement construction quality monitoring, the evaluation index and criterion of asphalt pavement gradation segregation degree are proposed. Key words: temperature segregation;ground penetrating radar;two-way travel time;the void ratio;Infrared thermal imager

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