基于时温等效原理的片麻岩-改性沥青混合料的动态模量主曲线研究  

Research on Dynamic Modulus Master Curve of Gneiss-Modified Asphalt Mixture based on Time-Temperature Equivalence Principle

作　　者：范志宏[1] 唐光星[1] 邓宏观 常明丰[3] 刘虎军[1] 朱亮 FAN Zhi-hong;TANG Guang-xing;DENG Hong-guan;CHANG Ming-feng;LIU Hu-jun;ZHU Liang(Key Laboratory of Harbor&Marine Structure Durability Technology for Industry of Transportation,CCCC Fourth Harbor Engineering Institute Co.Ltd.,Guangzhou 510230,China;The First Engineering Company of CCCC Fourth Harbor Engineering Co.Ltd.,Guangzhou 510420,China;Chang'an University,Xi'an 710061,China)

机构地区：[1]中交四航工程研究院有限公司,水工构造物耐久性技术交通运输行业重点实验室,广州市510230 [2]中交四航局第一工程有限公司,广州市510420 [3]长安大学,西安市710061

出　　处：《公路》2022年第12期41-46,共6页Highway

基　　金：水工构造物耐久性技术交通运输行业重点实验室开放课题,项目编号KFKT-SG-2021-02;长安大学中央高校基本科研业务费专项资金资助,项目编号300102311812。

摘　　要：为了研究宽频率域和温度域片麻岩-改性沥青混合料的动态黏弹性,利用马歇尔试验开展片麻岩SBS改性沥青混合料和片麻岩SBR改性沥青混合料的配合比设计;制备两种改性沥青混合料的旋转压实试件,进行简单性能试验测试并分析不同频率、温度条件下的动态模量、相位角;最后,基于时温等效原理确定两种改性沥青混合料的动态模量主曲线。结果表明:随着频率的增加,两种改性沥青混合料的动态模量逐渐增大;除40℃外,4℃和20℃时相位角均随加载频率的增加而减小;温度越高,动态模量越小,而相位角则呈相反的变化规律;利用Sigmoidal函数拟合的动态模量主曲线,相关系数大于0.98,相关性较高。In order to study the dynamic viscoelasticity of the gneiss-modified asphalt mixtures in the wide frequency domain and temperature domain, the Marshall test is used to develop the mix design of the gneiss-SBS modified asphalt mixture and the gneiss-SBR modified asphalt mixture. The two modified asphalt mixture specimens are prepared by a gyratory compactor, and the dynamic modulus and phase angle are measured and analyzed by using the simple performance tests under different frequencies and temperatures. Finally, the dynamic modulus master curves of these two modified asphalt mixtures are determined based on the time-temperature equivalence principle. The results show that the dynamic moduli of the two modified asphalt mixtures increase with the increase of frequency. The phase angles decrease with the increase of loading frequency at 4℃ and 20℃ except 40℃. The higher the temperature, the smaller the dynamic modulus, the phase angle changes in the opposite way. The dynamic modulus master curve fitted by the Sigmoidal function has a correlation coefficient greater than 0.98, so the correlation is higher.

关 键 词：道路工程 片麻岩改性沥青混合料 时温等效原理 动态模量 主曲线 

分 类 号：TU535[建筑科学—建筑技术科学] U414.1[交通运输工程—道路与铁道工程]