Effect of temperature on volumetric parameters of rubber modified asphalt mixture

摘要

In this study, contrasted rubber modified asphalt and SBS modified asphalt, the mixture of AC-13C, SMA-13 and AR-AC13 are used for compaction test in the range of 120～200°C as to covering the actual road construction compaction temperature. It can simulated the road compaction performance. The results showed that the temperature is a great influence on the volume parameter of rubber modified asphalt mixture. In the range of 160～180°C, the void fraction, VMA and VFA of modified asphalt mixture is not sensitive to temperature, improving mixing temperature is not meaningful to improve the quality of compaction. When the temperature dropped to below 160°C, the VMA rise rapidly, VFA falling rapidly, the increase of void fraction also present a "linear" trend, at this stage to improve mixing temperature can improve the compaction quality.