干法胶粉沥青大粒径沥青混合料动态模量试验研究  

Dynamic Modulus Experimental Study on Dry Process Rubber Powder Asphalt Large Particle Asphalt Mixture

作　　者：高岳峰 符东绪 成永宁 胡家波 袁帅 徐希忠 GAO Yuefeng;FU Dongxu;CHENG Yongning;HU Jiabo;YUAN Shuai;XU Xizhong(CRCC(Shandong)Gaodoog Expressway Co.,Ltd.,Liaocheng 252022;Shandoog Transportation Research Institute,Jinan 250102;Transportation Industry Key Laboratory of expressway maintenance technology(Jinan),Jinan 250102)

机构地区：[1]中铁建(山东)高东高速公路有限公司,聊城252022 [2]山东省交通科学研究院,济南250102 [3]高速公路养护技术交通行业重点实验室(济南),济南250102

出　　处：《石油沥青》2022年第1期15-19,24,共6页Petroleum Asphalt

摘　　要：为了探究干法胶粉沥青大粒径沥青混合料LSPM的动态特性,通过干法直投制备胶粉沥青,应用简单性能试验机(SPT)对比了干法胶粉沥青和MAC改性沥青LSPM在不同温度及加载频率下的动态模量和相位角,根据时-温等效原理,得到了参考温度为20℃的动态模量主曲线,结果表明:40℃时干法胶粉沥青LSPM中沥青胶结料保持着良好的粘结性能;在应对重载慢速行驶的车辆荷载作用时,干法胶粉沥青LSPM表现出优于MAC改性沥青LSPM的性能。In order to explore the dynamic characteristics of dry process rubber powder asphalt large particle asphalt mixture LSPM,rubber powder asphalt is prepared by dry direct casting.The dynamic modulus and phase angle of dry process rubber powder asphalt and MAC Modified Asphalt LSPM at different temperatures and loading frequencies are compared by simple performance testing machine(SPT).The dynamic modulus principal curve with reference temperature at 20 ℃ is obtained.The results show-that the asphalt binder in dry process rubber powder asphalt LSPM maintains good adhesion at 40 ℃ and the performance of dry rubber powder asphalt LSPM is better than that of MAC Modified Asphalt LSPM when dealing with the load of heavy-duty and slow-moving vehicles.

关 键 词：干法工艺 胶粉 LSPM 动态模量 主曲线 时温等效原理 

分 类 号：U414[交通运输工程—道路与铁道工程]