摘要
沥青蠕变恢复性能快速检测方法是一种基于空气加载和激光测量技术的沥青质量控制试验方法,该方法使用空气(或氮气)射流使沥青材料产生压痕,并用激光测量由此产生的变形和变形恢复。利用沥青蠕变恢复性能快速检测设备对基质沥青、SBS改性沥青和胶粉改性沥青分别进行不同温度下的空气压力加载试验,评价了沥青蠕变恢复性能快速检测方法的重复性,并与针入度试验方法建立相关关系以评价沥青蠕变恢复性能快速检测方法的可行性。研究结果表明:随着测试温度升高,沥青最大蠕变变形增大,而变形恢复率减小。沥青蠕变恢复性能快速检测方法在评价基质沥青和改性沥青性能时均具有较好的重复性,且沥青蠕变恢复性能快速检测评价指标与针入度之间具有较好的相关关系,可以采用沥青蠕变恢复性能快速检测方法代替针入度方法对不同类型沥青蠕变恢复性能进行快速评价。
The asphalt creep recovery performance rapid detection is a test method for asphalt quality control based on air loading and laser measurement technology,in which air(or nitrogen)jet is used to make asphalt material produce indentation,and laser is used to measure the resulting deformation and deformation recovery.The air pressure loading tests of base asphalt,SBS modified asphalt and rubber modified asphalt were carried out at different temperatures by the asphalt creep recovery performance rapid detection equipment.The repeatability of the asphalt creep recovery performance rapid detection method was evaluated,and the feasibility of the asphalt creep recovery performance rapid detection method was evaluated by establishing a correlation with the penetration test method.The research results show that with the increase of test temperature,the maximum creep deformation of asphalt increases,while the recovery rate of deformation decreases.The rapid detection method of asphalt creep recovery performance has good repeatability in the evaluation of base asphalt and modified asphalt performance.There is a good correlation between the evaluation index of asphalt creep recovery performance rapid detection and penetration.Therefore,the asphalt creep recovery performance rapid detection method can be used to replace the penetration method for the rapid evaluation of different types of asphalt creep recovery performance.
作者
蔡凤杰
冯振刚
姚冬冬
陈婷婷
韦金城
CAI Fengjie;FENG Zhengang;YAO Dongdong;CHEN Tingting;WEI Jincheng(School of Highway,Chang’an University,Xi’an 710064,Shaanxi,China;Jilin Provincial Transport Scientific Research Institute,Changchun 130012,Jilin,China;Shandong Transportation Science Institute,Ji’nan 250102,Shandong,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第1期54-59,共6页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家自然科学基金项目(51508032)
山东省交通运输科技计划项目(2020B38)
吉林省交通运输科技计划项目(2018-1-7)
山西省公路局科技项目(2019-1-2)。
关键词
道路工程
沥青
快速检测
最大蠕变变形
变形恢复率
road engineering
asphalt
rapid detection
maximum creep deformation
deformation recovery rate
