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Flexural behaviour of flax FRP double tube confined coconut fibre reinforced concrete beams with interlocking interface

机译：带互锁界面的亚麻FRP双管承压椰子纤维增强混凝土梁的抗弯性能

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摘要

This paper focuses on the flexural performance of flax fibre reinforced polymer (FFRP) tubes confined coconut fibre reinforced concrete (CFRC) composites. In total, six 520 mm long cylindrical specimens with a mechanical bond between CFRC and FFRP tube were constructed. Two configurations were considered: 1). CFRC core confined by a single outer FFRP tube; 2). CFRC filled double FFRP tubes, and the inner tube was placed along the centre line of the cylinder beam. In the third point bending test, the maximum load, flexural deformation and outer tube strains in the longitudinal and hoop directions were measured. It was found that the double tube specimens possessed excellent flexural characteristics, in comparison to the single tube specimens.
机译：本文着重研究亚麻纤维增强聚合物（FFRP）管约束椰子纤维增强混凝土（CFRC）复合材料的抗弯性能。总共构造了六个520毫米长的圆柱形试样，它们在CFRC和FFRP管之间具有机械结合。考虑了两种配置：1）。 CFRC芯由一个外部FFRP管约束； 2）。 CFRC填充双FFRP管，并将内管沿圆柱梁的中心线放置。在第三点弯曲试验中，测量了纵向和箍向的最大载荷，挠曲变形和外管应变。发现与单管试样相比，双管试样具有优异的弯曲特性。

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