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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Impact resistance of short bamboo fibre reinforced polyester concretes
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Impact resistance of short bamboo fibre reinforced polyester concretes

机译：短竹纤维增强聚酯混凝土的抗冲击性

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摘要

Bamboo fibre is becoming more important as reinforcement in polymer composites owing to its environment sustainability and cost effectiveness. This study examines the performance of bamboo/polyester concretes under impact loading. Specimens at fibre volume fractions of 40vol.%, 50vol.% and 60vol.% and 3mm, 7mm and 10mm fibre lengths were fabricated. Results showed that the optimum impact resistance was attained at 50vol.%/10mm, with 16.6 times higher compared to neat polyester. Scanning electron micrographs revealed that the failure mechanisms include matrix cracking, fibre/matrix debonding, fibre pull-out, fibre end damage, fibre splitting and sand particles debonding. In addition, by relating the experimental results to a theoretical model, the damage zone size was found to increase with the fibre length except at 60vol.%/10mm, which could be due to fibre-fibre interaction. Results suggest that bamboo fibre is a good candidate to enhance the impact resistance of polyester concrete.
机译：竹纤维由于其环境的可持续性和成本效益，在聚合物复合材料中作为增强材料变得越来越重要。这项研究检查了竹/聚酯混凝土在冲击载荷下的性能。制备了纤维体积分数分别为40vol。％，50vol。％和60vol。％的样品，以及3mm，7mm和10mm的纤维长度。结果表明，最佳抗冲击性达到了50vol。％/ 10mm，是纯聚酯的16.6倍。扫描电子显微镜照片显示，破坏机理包括基体开裂，纤维/基体剥离，纤维拉出，纤维端部损坏，纤维分裂和砂粒剥离。另外，通过将实验结果与理论模型联系起来，发现损伤区域的大小随纤维长度的增加而增加，除了60vol。％/ 10mm可能是由于纤维-纤维相互作用所致。结果表明竹纤维是增强聚酯混凝土抗冲击性的良好选择。

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