Studying of the Influence of Mesh Material between 6.3 ~ 4 mm on the Performance and Design of EME2(0/14) High Modulus Asphalt Mixture

This paper used the design method of EME high modulus HMA from France for the mix designing of EME2 (0/14) HMA. We studied the influence of critical sieve between 6.3 ~ 4mm for EME high modulus asphalt mixture, and tested the volume indicators of the test specimen. We found that the optimum asphalt content of the asphalt mixture which had 6.3 and 4 gap graded graduation was 5.2% which was 0.5% lower than optimum asphalt content of the asphalt mixture which had continuous gradation. Meanwhile, AASHTO T283 test, HWTD, low temperature bending test were carried out for comparing the performance of the above two graduation type. The test results showed that the gap graded asphalt mixture and the continuous gradation of EME-14 high modulus asphalt mixture performance were basically the same, we could also concluded that the amount of material from sieve 6.3 to 4 could significantly influenced the asphalt content of the asphalt mixture.