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首页> 外文期刊>Magazine of Concrete Research >CFRP-conf ined concrete columns under different environmental conditions
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CFRP-conf ined concrete columns under different environmental conditions

机译：CFRP约束混凝土柱在不同环境条件下的作用

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摘要

The behaviour of carbon fibre reinforced polymer-confined cylindrical and prismatic concrete specimens subjected to several different environmental conditions was investigated in four groups. The first group of specimens was used as a reference. In the second group, specimens were exposed to dry heating-cooling (H-C) cycles in the environmental test chamber (ETC), whereas specimens in the third group were kept in water while simultaneously being subjected to H-C cycles in the ETC. Finally, the last group of specimens was kept outside of the laboratory to determine the outdoor environmental effect. After the ageing phase, specimens were tested under monotonic uniaxial loading to determine the change in their mechanical properties. Cylindrical specimens were observed not to be significantly affected by H-C cycles with the exception of their ultimate strain, which decreased under outdoor conditions. As for the prismatic specimens, dry H-C cycles were found to reduce strength by up to 24% and strain by up to 33%. Wet H-C cycles and outdoor exposure were seen to decrease further the strength and ultimate strain of prismatic specimens.
机译：研究了碳纤维增强聚合物约束的圆柱和棱柱混凝土试样在几种不同环境条件下的行为，分为四组。第一组标本用作参考。在第二组中，将样品置于环境测试室（ETC）中的干热-冷却（H-C）循环中，而将第三组中的样品置于水中，同时在ETC中进行H-C循环。最后，将最后一组标本保存在实验室外面以确定室外环境影响。老化阶段之后，在单调单轴载荷下测试样品，以确定其机械性能的变化。观察到圆柱形标本不受H-C循环的影响，除了它们的极限应变外，极限应变在室外条件下会降低。对于棱柱形试样，发现干燥的H-C循环会降低强度达24％，使应变降低达33％。观察到湿的H-C循环和室外暴露会进一步降低棱柱形试样的强度和极限应变。

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  • 来源
    《Magazine of Concrete Research》 |2013年第12期|731-743|共13页
  • 作者

    Bans Erdil; Ugurhan Akyuez; lsmail OEzguer Yaman;

  • 作者单位

    Department of Civil Engineering, Yuzuncuyil University, Van, Turkey;

    Department of Civil Engineering, Structural Engineering Laboratory, Middle East Technical University, Ankara, Turkey;

    Department of Civil Engineering, Materials of Construction Laboratory, Middle East Technical University, Ankara, Turkey;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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