抗剥落剂对花岗岩沥青混合料水稳定性的影响

Effect of Anti-stripping agent on Water Stability of Granite Asphalt Mixture

通过粘附性试验、冻融劈裂试验、加速老化-冻融劈裂试验和汉堡车辙试验综合评价了胺类抗剥落剂、非胺类抗剥落剂和石灰对沥青混合料水稳定性能的影响。试验结果表明:1)相比于胺类和石灰抗剥落剂,添加非胺类抗剥落剂的沥青膜完整,能显著改善沥青与酸性集料间的粘附等级;2)非胺类抗剥落剂不仅能提高沥青混合料的抗水损害能力,还能增强其抗老化性能和抗车辙性能。

The effects of amine anti-stripping agent,non-amine anti-stripping agent and lime on the water stability of asphalt mixtures are evaluated comprehensively through adhesion test,freeze-thaw splitting test,accelerated aging-freeze-thaw splitting test and Hamburg rutting test.The experimental results show that,compared with amine and lime anti-stripping agents,the asphalt film with non-amine anti-stripping agent is intact and the adhesion grade between asphalt and acid aggregate is significantly improved.In addition,non-amine anti-stripping agent can not only improve the water damage resistance of asphalt mixture,but also enhance its aging resistance and rutting resistanceperformance.