AC-13沥青混合料路用性能研究  

Study on Pavement Performance of AC-13 Asphalt Mixture

作　　者：王东华 于嫣华 Wang Donghua;Yu Yanhua(Central&Southern China Municipal Engineering Design and Research Institute Co.,Ltd.,Wuhan,China;Wuhan Comprehensive Transportation Research Institute Co.,Ltd.,Wuhan,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉 [2]武汉综合交通研究院有限公司,湖北武汉

出　　处：《科学技术创新》2024年第4期102-105,共4页Scientific and Technological Innovation

摘　　要：为了更好的指导密级配AC-13沥青混合料的设计与施工,本文研究了AC-13沥青混合料的级配差异对路用性能的影响,分析了空隙率和最佳油石比对沥青混合料高温稳定性、低温抗裂性、水稳定性及抗滑性能的影响。结果表明:AC-13级配下限的高温稳定性和抗滑性能更好,级配上限的低温抗裂性和水稳定性更好;路用性能差异主要受空隙率、最佳油石比、粗细集料比例影响;空隙率更大的AC-13级配下限的构造深度更大,有助于抗滑性能的提升,适用于沥青路面上面层提高更好的安全性。In order to better guide the design and construction of dense gradation AC-13 asphalt mixture,this paper studies the influence of gradation difference of AC-13 asphalt mixture on road performance,and analyzes the influence of porosity and optimum asphalt aggregate ratio on high temperature stability,low temperature crack resistance,water stability and skid resistance of asphalt mixture.The results show that the lower limit of AC-13 gradation has better high temperature stability and skid resistance,and the upper limit of gradation has better low temperature crack resistance and water stability.The difference of road performance is mainly affected by void ratio,optimum oil-stone ratio and coarse-fine aggregate ratio.The lower limit of AC-13 gradation with larger porosity has a larger structural depth,which is helpful to improve the skid resistance and is suitable for improving the safety of the upper layer of asphalt pavement.

关 键 词：AC-13 沥青混合料 路用性能 空隙率 构造深度 抗滑性 

分 类 号：U414[交通运输工程—道路与铁道工程]