PE/TLA复合改性高模量沥青混合料的结构特性  

Structural Characteristics of PE/TLA Composite Modified High Modulus Asphalt Mixture

作　　者：刘艳雄 郭朋朋[2] 栗威 LIU Yan-xiong;GUO Peng-peng;LI Wei(Henan Province Highway Engineering Bureau Group Co., Ltd., Zhengzhou 450006, Henan, China;Henan Vocational and Technical College of Communications, Zhengzhou 450009, Henan, China;Henan Transportation Research Institute Co., Ltd., Zhengzhou 450006, Henan, China;State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410076, Hunan, China)

机构地区：[1]河南省公路工程局集团有限公司,河南郑州450006 [2]河南交通职业技术学院,河南郑州450009 [3]河南省交通科学技术研究院有限公司,河南郑州450006 [4]长沙理工大学公路养护技术国家工程实验室,湖南长沙410076

出　　处：《筑路机械与施工机械化》2019年第6期61-65,共5页Road Machinery & Construction Mechanization

基　　金：国家自然科学基金项目(50208004);长沙理工大学公路养护技术国家工程实验室开放基金资助项目(kfj140103)

摘　　要：为研究PE/TLA复合改性高模量沥青混合料的路用性能,采用抗压回弹模量、动态模量、低温弯曲、高温变形及弯曲疲劳试验对PE/TLA高模量沥青混合料结构的各项性能进行验证。结果显示:PE/TLA高模量沥青混合料具有较高的抗压回弹模量和动态模量、良好的高温抗车辙和抗疲劳性能,而低温抗裂性能、水稳定性能略低于SBS改性沥青混合料;PE/TLA高模量添加剂具有较低为温度敏感性,其抗压回弹模量随温度的增加呈缓慢下降趋势,高温累积变形随荷载作用次数增加而显著提高。In order to study the pavement performance of PE/TLA composite modified high modulus asphalt mixture, the compressive resilience modulus, dynamic modulus, low temperature bending, high temperature deformation and bending fatigue tests were used to verify the structure performance of PE/TLA high modulus asphalt mixture. The results show that PE/TLA high modulus asphalt mixture has high compressive resilience modulus and dynamic modulus, good high temperature rutting resistance and fatigue resistance, while the low temperature crack resistance and water stability are slightly lower than those of SBS modified asphalt mixture;Besides, PE/TLA high modulus additive has lower temperature sensitivity, and its compressive resilience modulus decreases slowly with the increase of temperature, and the high temperature cumulative deformation increases significantly with the increase of loading times.

关 键 词：道路工程 高模量沥青混合料 PE TLA 

分 类 号：U414.03[交通运输工程—道路与铁道工程]