沥青路面车辙变形规律及与力学性能相关性研究  

Study on Rut Deformation Law of Asphalt Pavement and Its Correlation with Mechanical Properties

作　　者：杜俊睿 Du Junrui(Tianjin Urban Construction Design Institute Co.,Ltd.Hubei Branch,Wuhan,China)

机构地区：[1]天津城建设计院有限公司湖北分公司,湖北武汉

出　　处：《科学技术创新》2024年第20期141-144,共4页Scientific and Technological Innovation

摘　　要：为了寻找简便且准确评价沥青混合料高温性能的力学指标,在研究沥青混合料车辙变形规律的基础上,对比研究抗压强度、马歇尔稳定度、劈裂强度及抗弯拉强度与车辙深度的线性相关性。结果表明:混合料车辙深度随荷载作用次数增加呈先快速增长后趋于稳定,随温度升高明显增加;压缩性强度指标(抗压强度、马歇尔稳定度)与车辙深度相关性较好,而拉伸强度指标(劈裂强度、抗弯拉强度)与动稳定度的相关性较差;抗剪强度与车辙深度相关性高达0.98,可准确有效地评价混合料的高温抗车辙性能。In order to find a simple and accurate mechanical index to evaluate the high temperature performance of asphalt mixture,on the basis of studying the rut deformation law of asphalt mixture,the linear correlation between compressive strength,Marshall stability,splitting strength,flexural strength and rut depth was studied.The results show that the rutting depth of the mixture increases rapidly first and then tends to be stable with the increase of load times,and increases significantly with the increase of temperature.The compressive strength index(compressive strength,Marshall stability)has a good correlation with rutting depth,while the tensile strength index(splitting strength,flexural tensile strength)has a poor correlation with dynamic stability.The correlation between shear strength and rutting depth is as high as 0.98,which can accurately and effectively evaluate the high temperature rutting resistance of the mixture.

关 键 词：沥青路面 高温性能 车辙深度 力学强度 抗压强度 

分 类 号：U418.6[交通运输工程—道路与铁道工程]