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首页> 外文会议>Composite Construction in Steel and Concrete VII >The Effect of Carbon Nanotubes on the Headed Stud Shear Connectors for Composite Steel-Concrete Beams under Elevated Temperatures
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The Effect of Carbon Nanotubes on the Headed Stud Shear Connectors for Composite Steel-Concrete Beams under Elevated Temperatures

机译：碳纳米管对高温下钢-混凝土组合梁的双头螺栓剪切连接器的影响

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摘要

This paper presents a novel experimental and numerical analysis of composite steel-concrete beams at elevated temperatures utilising carbon nanotube. Push tests were conducted as a part of the experimental study to determine the strength of the headed stud shear connectors in both normal concrete and carbon nanotube concrete. The specimens were tested under ambient temperature, 200℃, 400℃, and 600℃, respectively. Results from the experimental study illustrated the reduction of ultimate load and stiffness as temperatures increased. The numerical analysis was in good agreement with the experimental study results. Even though carbon nanotube had no effect on the ultimate load, however, the carbon nanotube reduced concrete spalling and cracking when compared to normal concrete. The carbon nanotube was observed to take effect at temperatures greater than 400℃. As a conclusion, the carbon nanotube concrete material would be an effective choice for reducing concrete spalling and cracking when exposed to elevated temperatures.
机译：本文提出了一种利用碳纳米管对高温下钢-混凝土组合梁进行新型的实验和数值分析。作为试验研究的一部分，进行了推力试验，以确定普通混凝土和碳纳米管混凝土中带头螺柱剪切连接器的强度。分别在环境温度200℃，400℃和600℃下测试样品。实验研究的结果表明，随着温度的升高，极限载荷和刚度会降低。数值分析与实验研究结果吻合良好。尽管碳纳米管对极限载荷没有影响，但是与普通混凝土相比，碳纳米管减少了混凝土剥落和开裂。观察到碳纳米管在高于400℃的温度下起作用。结论是，碳纳米管混凝土材料将是减少暴露于高温下混凝土剥落和开裂的有效选择。

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  • 会议地点 North Queensland(AU)
  • 作者

    Olivia Mirza; Kathryn Wilkins; Zhong Tao; Brian Uy;

  • 作者单位

    School of Computing, Engineering and Mathematics and Institute for Infrastructure Engineering, Univ. of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia;

    School of Computing, Engineering and Mathematics and Institute for Infrastructure Engineering, Univ. of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia;

    School of Computing, Engineering and Mathematics and Institute for Infrastructure Engineering, Univ. of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia;

    Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Univ. of New South Wales Sydney, NSW 2052, Australia;

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