多因素下AC型HMA的水损害性能  

Water Damage Property of AC Hot Asphalt Mixture by Various Factors

作　　者：陆学元[1] 

机构地区：[1]安徽省高速公路控股集团有限公司,安徽合肥230051

出　　处：《重庆交通大学学报（自然科学版）》2010年第4期563-567,591,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：安徽省2005年交通科技进步计划项目(发改交运[2005]1247号)

摘　　要：应用正交试验设计分析了多因素下AC-13和AC-20热拌改性沥青混合料冻融劈裂强度的影响因素及其相关性。结果表明,级配组成是决定AC-13沥青混合料冻融劈裂强度的关键性影响因素,而油石比变化影响则较小;空隙率和砂当量是影响AC-20沥青混合料冻融劈裂强度的关键因素;冻融劈裂强度与马歇尔性能指标存在良好的线性关系。最后,给出了提高施工质量控制措施的建议。According to orthogonal experimental design,factors influencing freezing-thawing splitting strength of AC-13 and AC-20 modified asphalt mixture as well as their relativiy were studied.Through the test,it was demonstrated that the gradation composition played a desicive role in determining the AC-13 asphalt mixture freezing-thawing splitting strength,while it exerted little influence on the OAC;VV and sand equivalent value were crucial factors for AC-20 asphalt mixture freezing-thawing splitting strength;there was a good linear relationship between freezing-thawing splitting strength and Marshall performance index.Suggestions for improving construction quality were made.

关 键 词：道路工程 AC型沥青混合料 试验设计 冻融劈裂强度 影响因素 相关性 

分 类 号：U414[交通运输工程—道路与铁道工程]