RAP掺量对温拌再生沥青AC-16混合料性能的影响

摘要

对再生沥青路面材料RAP(Recycled Asphalt Pavement)掺入温拌沥青混合料后的混合料性能展开研究.采用AC-16级配设计,对比分析不同掺量时温拌再生沥青混合料的性能.结论表明:温拌再生沥青混合料AC-16的高温稳定性和水稳定性随着RAP掺入量的提高先提升后下降,分别在40%与30%左右达到峰值;低温下的抗裂性能以及疲劳寿命都随着RAP掺入量的提升而下降;温拌再生沥青混合料中RAP掺量为30%~40%时最为科学.%The performance of recycled asphalt pavement material RAP mixed with warm mixture was studied.By using AC-16 design, the performance of recycled asphalt mixture with different dosage was analyzed and compared.The results showed that the high temperature stability and water stability of warm recycled asphalt mixture AC-16 increased firstly and then decreased with the increasing of RAP content, and reached the peak at 40% and 30% respectively;The crack resistance and fatigue life at low temperature decreased with the increasing of RAP incorporation;The most scientific mixing rate is 30%~40% RAP mixture with warm recycled asphalt.