摘要
为探究不同压实度对沥青混合料介电特性的影响,采用武汉西四环项目上面层SMA-13的级配,通过控制轮碾次数成型5种不同压实度的车辙板试件,利用探地雷达进行介电常数值测定,评价其介电特性与压实度之间的关系,并通过数据拟合与实际工程数据对比验证其可靠性。研究结果表明:沥青混合料介电常数与压实度存在着一定的曲线关系,当满足压实度大于96%的要求时,其介电常数值大于10.29,为检测路面压实度质量判定提供了重要的参考依据;拟合关系曲线得到的数据与实测数据的平均相对误差为0.93%,满足规范要求,具有一定的实际意义。
To explore the influence of different compaction degree on dielectric property of asphalt mixture, based on the mix ratios from SMA-13 surface layer of Wuhan West Fourth Ring Road Project, some test pieces are prepared with different compaction degree by controlling times of grinding and data of dielectric constant is get by using ground penetrating radar （GPR）, to verify reliability by data fitting and compare with real engineering data. The study results show that these is a curve relationship between degree of compaction and dielectric constant, the dielectric constant is greater than 10.29 when the compaction degree greater than 96 %, the average relative error is 0.93% compared to real engineering data, which satisfy the specifications and have certain practical significance
作者
于晓贺
杨洋
冯光乐
YU Xiao-he;YANG Yang;FENG Guang-le(School of Transportation,Wuhan University of Technology,Wuhan 430063, China;Engineering Quality Supervision Bureau, Transportation Department of Hubei Province, Wuhan 430014, China)
出处
《公路》
北大核心
2017年第12期102-106,共5页
Highway
基金
交通运输部建设科技计划项目
项目编号2014318J22120
关键词
介电特性
压实度
介电常数
探地雷达
相对误差
dielectric property
compaction degree
dielectric constant
GPR
relative error
