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.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
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)
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
road engineering
AC asphalt mixture
test design
freezing-thawing splitting strength
influencing factors
correlation
