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Mechanical characterisation and impact behaviour of concrete reinforced with natural fibres

机译：天然纤维增强混凝土的力学特性和冲击性能

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摘要

It is well known that high strength concrete displays a brittle behaviour and less tough characteristics than normal strength concrete. This type of behaviour can be enhanced by incorporating various types of fibres which lead to better mechanical properties and impact resistance. In this paper, an experimental study conducted on high strength concrete reinforced with glass fibres and natural fibres (palm tree leaves), both used at a relatively low volume fraction, is presented. Compressive, splitting, three-point bending and impact test methods have been used to characterise reinforced concrete materials, and the results are analysed statistically. It is observed that natural fibres enhanced the mechanical properties and impact resistance of concrete and exhibit comparable response to the glass fibres. A finite element model using ANSYS was employed to study the flexural behaviour of fibre reinforced concrete. It is concluded that both experimental and numerical results are in good agreement.
机译：众所周知，与普通强度混凝土相比，高强度混凝土表现出脆性，而韧性较差。可以通过掺入各种类型的纤维来增强这种行为，这些纤维可导致更好的机械性能和抗冲击性。在本文中，对玻璃纤维和天然纤维（棕榈树叶）增强的高强度混凝土进行了实验研究，两者均以相对较低的体积分数使用。压缩，劈裂，三点弯曲和冲击试验方法已用于表征钢筋混凝土材料，并对结果进行统计分析。可以看出，天然纤维增强了混凝土的机械性能和抗冲击性，并对玻璃纤维表现出可比的响应。采用ANSYS有限元模型研究了纤维增强混凝土的抗弯性能。结论是，实验和数值结果都吻合良好。

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  • 来源
    《Composite Structures》 |1995年第4期|p.165-171|共7页
  • 作者

    S. K. Al-Oraimi; A. C. Seibi;

  • 作者单位

    College of Engineering, Sultan Qaboos University, P.O. Box 33, Muscat 123, Oman;

  • 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
  • 中图分类 工程材料学;
  • 关键词

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