摘要
利用旋转压实仪成型试件,采用改进的Superpave设计方法进行Superflex改性沥青抗裂层混合料设计,通过浸水马歇尔试验、冻融劈裂试验、低温弯曲小梁试验、车辙试验及疲劳试验研究分析了掺加纤维前后Superflex改性沥青抗裂层混合料路用性能.试验结果表明:改进的superpave设计方法适合抗裂层沥青混合料设计;Superflex改性沥青抗裂层混合料具有良好的低温抗裂性能、水稳定性能及疲劳性能;掺加纤维可改善混合料高温性能、疲劳寿命和常温弯曲性能,疲劳寿命与应力呈指数关系,相关性较好,掺加纤维的Superflex改性沥青抗裂层适用南方湿热地区.
The improved superpave design method was used to design the superflex modified asphalt anti-cracking layer mixture,and the test specimens were manufactured by using superpave gyratory compactor.The road performance of superflex modified asphalt anti-cracking layer mixture before and after adding fiber was studied and analyzed through some tests,which included immersion test,freezing-thaw splitting test,low temperature bending test,high temperature rutting test and fatigue test.The result shows that,the improved superpave design method is suitable to design the anti-cracking layer mixture;these performances are good which included water stability performance,low temperature anti-cracking performance and fatigue performance;The high temperature performance,fatigue life and normal temperature bending performance of the mixture can be improved by adding fiber;the fatigue life and stress is exponential relationship with good correlation,superflex modified asphalt crack resistant layer with fiber is suitable for hot and humid areas in south China.
作者
陈善祥
黄艳芳
姚勇
周栋
CHEN Shan-xiang;HUANG Yan-fang;YAO Yong;ZHOU Dong(College of Civil Engineering,Jiaying University,Meizhou 514015,China;Meixian District Road Affairs Center,Meizhou 514015,China;Changsha Bimeng Cloud Information Technology Co.,Ltd.,Changsha 414004,China)
出处
《嘉应学院学报》
2023年第6期64-67,共4页
Journal of Jiaying University
基金
广东省普通高校重点平台和科研项目(2018KQNCX242)。