应力吸收层改性沥青结合料粘温特性与施工温度确定  

Study on Viscosity-temperature Characteristics of Asphalt Binder for Stress Absorbing Layers and Determination of Construction Temperature

作　　者：李祖仲[1,2] 满新耀 陈拴发[1] 

机构地区：[1]长安大学材料科学与工程学院,西安710064 [2]中国石油独山子石化公司,克拉玛依833600 [3]广西柳桂高速公路运营有限责任公司,南宁530021

出　　处：《武汉理工大学学报》2012年第7期37-41,共5页Journal of Wuhan University of Technology

基　　金：交通运输部西部交通建设科技项目(200831881210);中央高校基本科研业务费专项资金(CHD 2010JC011);材料科学数据共享网项目(2005DKA32800)

摘　　要：为了全面了解应力吸收层特种改性沥青结合料的粘温特性,确定合理的拌和压实温度,对其进行不同温度下的布氏旋转粘度测试,分析粘度等参数随温度的变化规律,比较粘度试验中不同转子的旋转表面剪切与压路机碾压形变剪切的差异性,并根据旋转压实密实特性确定压实温度。结果表明:该特种改性沥青结合料拌和温度范围在175～180℃、初压温度为155～165℃是比较合理的,复压及终压紧跟其后,为应力吸收层混合料配合比设计和施工工艺确定提供重要参考。In order to fully understand the viscosity-temperature characteristics of asphalt binder in stress absorbing layers and determine the reasonable temperature of mixing and rolling,the paper carried out Brookfield revolving viscosity tests under different temperatures,analyzed the change of the parameters as temperature,such as viscosity and others,compared the difference between rotating surface shear of the rotors and deformation shear of the rollers,and determined the compaction temperature by the gyratory compaction behavior of the specimens.The results show that it is reasonable that the mixing temperature of the specailly modified asphalt binder ranges from 175 ℃ to 180 ℃ and initial compaction temperature ranges from 155 ℃ to 165 ℃,closely followed by recompaction and final compaction.It can provide the important references for mix design and construction technology.

关 键 词：道路工程 应力吸收层 沥青结合料 粘温特性 拌和与碾压温度 

分 类 号：U416.224[交通运输工程—道路与铁道工程]