Effect of natural fibre reinforced polymers on confined compressive strength of concrete

Abstract This study aims to establish an in-depth understanding of the compressive behaviour of concrete confined with low-cost natural fibre reinforced polymer (NFRP). The coupon test of the Jute, Hemp and Cotton NFRP was conducted to obtain their tensile properties. A series of concrete cylinders confined by cotton, jute, and hemp NFRPs was prepared and tested under uniaxial compression test. The results prove that NFRP is effective and suitable to enhance the confinement effect of concrete, especially Jute-NFRP. In addition, empirical equations were investigated to predict peak compressive strength of the NFRPs-confined concrete.