硬沥青改性沥青混凝土黏结层路用性能研究  

Study on Road Performance of Gilsonite Modified Asphalt Concrete Bonding Layer

作　　者：胡赛鸿 杨武 HU Saihong;YANG Wu(Changsha Urban Construction Investment Development Group Co.,Ltd.,Changsha,Hunan 410118,China;China Communications Construction(Changsha)Co.,Ltd.,Changsha,Hunan 410118,China)

机构地区：[1]长沙市城市建设投资开发集团有限公司,湖南长沙410118 [2]中交(长沙)建设有限公司,湖南长沙410118

出　　处：《施工技术（中英文）》2024年第10期39-43,共5页Construction Technology

摘　　要：选择硬沥青作为一种天然沥青添加剂,通过在沥青混凝土黏结层中添加6%,7%,8%的硬沥青,与未添加硬沥青的混合物进行比较,评估硬沥青对沥青混凝土性能的影响。结果表明:添加硬沥青的混合物稳定性提高的同时,流动性增加,导致混合物具有更大的变形性;当硬沥青添加比例为6%时,混合物具有最优路用性能,表明在沥青混凝土黏结层中添加适量的硬沥青可有效提升道路铺装的质量和耐用性。Gilsonite is selected as a natural asphalt additive,and by adding 6%,7%and 8%gilsonite into the asphalt concrete binder layer,the effect of gilsonite on the performance of asphalt concrete was evaluated by comparing with the mixture without gilsonite.The results show that the stability of the mixture with gilsonite is improved,and the fluidity is increased,resulting in greater deformability of the mixture.When the proportion of gilsonite is 6%,the mixture has the best road performance,indicating that adding an appropriate amount of gilsonite to the asphalt concrete bonding layer can effectively improve the quality and durability of road pavement.

关 键 词：混凝土 硬沥青 性能 空隙率 

分 类 号：TU528[建筑科学—建筑技术科学] U414[交通运输工程—道路与铁道工程]