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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Experimental investigation on the study of mechanical and microstructural properties of hybrid composite cement beams reinforced with multi-walled carbon nanotubes and carbon fibres
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Experimental investigation on the study of mechanical and microstructural properties of hybrid composite cement beams reinforced with multi-walled carbon nanotubes and carbon fibres

机译：多壁碳纳米管和碳纤维增强混杂复合水泥梁的力学和微观结构性能研究的实验研究

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This paper investigates the behavior of reinforced cement composite beams with multi-walled carbon nanotubes and carbon fibers. The percentage of carbon fibers was fixed at 0.25 wt% of cement, while the percentage of multi-walled carbon nanotubes was fixed at 0.75 wt% of cement. Dispersion of both multi-walled carbon nanotubes and carbon fibers was carried out using the ultrasonic energy method. Composite beams were tested under flexure in order to evaluate their mechanical properties such as flexural strength, toughness and ductility. These results were then compared with the results of plain cement control beams. Microstructural tests like scanning electron microscopy, thermo gravimetric analysis and energy dispersive X-ray analysis were conducted on hybrid nanocomposite material, to study the dispersion of carbon nanotubes and carbon fibers, bonding of carbon nanotubes in C-S-H, temperature effects and the elemental composition. From the study it is concluded that the load-carrying capacity of composite beams under three-point loading is substantially higher than for plain controlled beams.
机译：本文研究了具有多壁碳纳米管和碳纤维的增强水泥复合梁的性能。碳纤维的百分比固定为水泥的0.25 wt％，而多壁碳纳米管的百分比固定为水泥的0.75 wt％。使用超声波能量法进行多壁碳纳米管和碳纤维的分散。为了评估其机械性能，例如弯曲强度，韧性和延展性，对复合梁进行了弯曲测试。然后将这些结果与普通水泥控制梁的结果进行比较。在混合纳米复合材料上进行了扫描电子显微镜，热重量分析和能量色散X射线分析等微结构测试，以研究碳纳米管和碳纤维的分散性，碳纳米管在C-S-H中的键合，温度效应和元素组成。从研究得出的结论是，三点荷载下复合梁的承载能力明显高于普通控制梁。

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