沥青路面回弹弯沉值温度修正应用分析  

Application Analysis of Temperature Correction of Rebound Deflection Value of Asphalt Pavement

作　　者：尹超 YI Chao

机构地区：[1]上海铁大建设工程质量检测有限公司,上海200331

出　　处：《上海公路》2021年第3期36-38,43,M0004,M0005,共6页Shanghai Highways

摘　　要：标准JTG 3450-2019《公路路基路面现场测试规程》更新后,对回弹弯沉方法中,温度修正内容的变化部分进行了分析。以上海某沥青路面为例,进行测试并展开分析。在7至8月高温段和1月气温在(5~10)℃、>10℃两种情况下,分别实测多组路表温度的数据。根据标准进行计算和比较分析后得出结论,为上海(华东)地区在夏季与冬季分别开展沥青路面回弹弯沉检测提供了相应的参考条件。依据该新标准t值的温度范围和上海市城市道路建设中常用的沥青层厚度,给出了t_(0)值的推荐使用范围,更便于该标准的理解和在检测中的应用。This article analyzed the change of the temperature correction in the rebound deflection method after the update of the standard JTG 3450-2019 Field Test Methods of Highway Subgrade and Pavement.The author took a certain asphalt pavement in Shanghai as an example to carry out the test and analysis.The data of multiple sets of road surface temperature were measured in the high temperature section from July to August and the temperature in January at(5~10)℃and>10℃.The conclusions from calculation according to the standard and comparative analysis provided the corresponding reference conditions for the rebound and deflection detection of asphalt pavements in Shanghai(East China)in summer and winter.Based on the temperature range of the new standard t value and the thickness of asphalt layer commonly used in urban road construction in Shanghai,this article also provided the recommended use range of t_(0) value,which was more convenient for the understanding of the standard and its use in testing.

关 键 词：沥青路面 回弹弯沉 温度修正 沥青层平均温度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]