长沙理工大学学报（自然科学版）Issue(1)：10-15,23,7.
碳纤维导电SBS改性沥青混合料性能试验
Performance experiments of carbon fiber-reinforced conductive SBS modified asphalt mixture
摘要
Abstract
In order to analyze pavement performances and ice-melting effects of conductive asphalt concrete,the chopped polyacrylonitrile-based carbon fibers were incorporated into SBS modified asphalt mixture AC-13C to prepare the carbon fiber-reinforced conductive modified asphalt mixtures.Five kinds of carbon fiber contents were selected respectively to conduct the laboratory experiments such as mix ratio design,pavement performances and simulated ice-melting etc.The results show,with the increase of carbon fiber content,the optimum asphalt-aggregate ratios of SBS modified asphalt mixture increase linearly;the dy-namic stability,the immersion residual Marshall stability and the freeze-thaw split strength ratios change in parabolic relationship;the low-temperature flexural-tensile strengths and the failure strains increase in"S"curve,but the stiffness moduli decrease in"Z"curve.It il-lustrates when the proper carbon fibers were incorporated into the SBS modified asphalt mixture,the pavement performances such as high-temperature anti-rutting,low-tempera-ture anti-cracking and moisture damage resistance etc can be improved because of the bridg-ing,reinforced and toughening effects of carbon fiber.However,the excessive carbon fibers can cause the decrease of enhancement effect because of poor dispersion and easy cluster. Simultaneously,when the carbon fiber contents are more than 0.3%,the carbon fibers in-side mixtures are lapped each other to form the good conductive network with the fine ice-melting results.On the whole,when the carbon fiber content is 0.4%,the pavement per-formances,the electrical conductivity and the ice-melting efficiency of carbon fiber-rein-forced SBS modified asphalt mixture are the best.关键词
碳纤维/导电沥青混凝土/SBS改性沥青混合料/路用性能/导电性能/融冰Key words
carbon fiber/conductive asphalt concrete/SBS modified asphalt mixture/pave-ment performance/electrical conductivity/ice-melting分类
交通工程引用本文复制引用
查旭东,蔡良,曹艳霞..碳纤维导电SBS改性沥青混合料性能试验[J].长沙理工大学学报（自然科学版）,2014,(1):10-15,23,7.基金项目
国家自然科学基金资助项目(51078045) （51078045）
