RAP掺量对泡沫温拌沥青混合料路用性能影响研究

Study on the impact of RAP mixing amount upon pavement performance of foamed warm-asphalt-mixing mixture

在系统分析RAP旧料的基础上,对不同RAP掺量的混合料进行了配合比设计,并验证了体积参数,通过试验,研究了不同RAP掺量的泡沫温拌沥青混合料的高温性能、低温性能、水稳性能及疲劳性能,结果表明,RAP材料的加入提高了混合料的高温性能,增大了孔隙率并降低了低温性能、水稳性能以及疲劳性能。

Based on systematically analyzing old RAP materials, the paper carries out mixing proportion design of mixture with different RAP mix-ing amount, and testifies its volume parameters. According to the testing results, it studies high temperature performance, low temperature per-formance ,water stability performance and fatigue performance of foamed warm- asphalt-mixing mixture with different RAP mixing amount. Results show that： through adding RAP material, it improves the high temperature performance of the mixture, increases porosity, and reduces low tem-perature performance, water stability performance and fatigue performance as well.