复掺纤维再生沥青混合料性能试验研究

选用木质素纤维和玄武岩纤维对SMA-13级配再生沥青混合料进行改良,对沥青混合料的高温稳定性、低温抗裂性和水稳定性进行试验研究.结果 表明:玄武岩纤维对再生沥青混合料高温稳定性、低温抗裂性能的改善效果较为显著,而木质素纤维对混合料的水稳定性的增强效果更为明显;按指标控制要求,单掺木质素纤维或玄武岩纤维沥青混合料对应的铣...

Experimental Research on Performance of Recycled Asphalt Mixture by Blending Fiber

Through using lignin fiber and basalt fiber to improve SMA-13 grade recycled asphalt mixture, the high temperature stability, low temperature crack resistance and water stability of asphalt mixture have been studied. The results show that basalt fiber improves the high-temperature stability and low-temperature crack resistance of the recycled asphalt mixture significantly, while lignin fiber enhances the water stability of the mixture more obviously. According to control index, the maximum milling content of the single lignin fiber or basalt fiber asphalt mixture is lower than 30.0 %. By blending 0.2 % lignin fiber and 0.4 % basalt fiber to improve the recycled asphalt mixture, the maximum milling content can reach 50.0 %, which is conducive to improving the regeneration utilization rate of the milling material.