Study on the Change Laws of Dynamic Modulus of Asphalt Mastic with Different Framework Types
In order to study the change laws of dynamic modulus with different framework types under different frequencies and temperatures and obtain the dynamic moduli with wider frequency ranges and temperature ranges, asphalt mastic specimens through removing coarse aggregates in AC-13, SMA-13 and OGFC-13 asphalt mixture were prepared. The dynamic moduli with different frequencies and temperatures were measured by simple performance tests, and the master curves of dynamic modulus of asphalt mastics were acquired by the time-temperature equivalence principle. The results show that the dynamic moduli of asphalt mastic increase with the increase of load frequencies under the same temperature, and the dynamic modulus order is AC- 13>SMA-13>OGFC-13. In addition, the dynamic moduli of asphalt mastic decrease when the temperatures rise. The dynamic moduli with wider frequency and temperature ranges are obtained from the master curves of dynamic modulus of asphalt mastic.