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Experimental on infrared radiation characteristics of high strength concrete during fracturing process

机译：高强混凝土断裂过程红外辐射特性试验

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摘要

In order to achieve the concrete structures damage detection by using non-destructive technology, this paper analyzes the variation characteristic of the infrared radiation and researches the infrared anomaly precursor of the concrete structures damage in the high speed railway infrastructure. The results show that the concrete sample will radiate infrared heat under the influence of the uniaxial loading, and the thermal infrared radiation increase with the increasing stress. The temperature raise quickly in the late loading stage, however, the temperature decreases before the burst of the concrete. The feature of the high-temperature region surrounds the low-temperature field is the main characteristics of the thermal image, and the infrared anomaly precursor, which is a high and low temperature boundary line, will appear before the burst of the sample. The experimental result will provide the detection basis for the non-destructive-testing and safety monitoring on concrete foundation of high speed railway.
机译：为了利用无损检测技术实现混凝土结构损伤的检测，本文分析了红外辐射的变化特征，研究了高速铁路基础设施中混凝土结构损伤的红外异常前兆。结果表明，混凝土试样在单轴载荷的作用下会辐射出红外热，并且随着应力的增加，红外热辐射会增加。温度在后期加载阶段迅速升高，但是，温度在混凝土爆裂之前降低。高温区域围绕低温场的特征是热图像的主要特征，而红外异常前体（即高低温边界线）将在样品破裂前出现。实验结果将为高速铁路混凝土基础的无损检测和安全监测提供检测依据。

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  • 来源
    《Materials Research Innovations》 |2015年第5期|S5.1107-S5.1111|共5页
  • 作者

    Liu J.; Yang F.; Xu X.;

  • 作者单位

    State Key Lab Coal Resource & Safe Min, Beijing 100083, Peoples R China|CARS, Railway Engn Res Inst, Beijing 100081, Peoples R China;

    State Key Lab Coal Resource & Safe Min, Beijing 100083, Peoples R China;

    State Key Lab Coal Resource & Safe Min, Beijing 100083, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    High-speed railway; Concrete structures; Uniaxial loading; Infrared detection; Non-destructive testing;

    机译：高速铁路;混凝土结构;单轴荷载;红外检测;无损检测;

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