COMPRESSIVE BEHAVIOUR OF CONCRETE CONFINED BY ARAMID FIBRE SPIRALS

摘要

The paper reports the experimental results of compressive tests on concrete cylinders wrapped by aramid fibre spirals. Both circular concrete cylinders with a single spiral and rectangular concrete specimens with two interlocking spirals are investigated. Concentric compression tests were carried out. It was found that the behaviour of confined concrete is influenced not only by the concrete strength, but also the spiral leg spacing and the degree of interlocking. Concrete cylinders with close spacing and a high degree of interlocking usually gave higher strength and ductility. Experimental results are compared with analytical data.