Ductility and flexural behaviour of Hybrid Fibre Reinforced Concrete (HFRC) made with Polyproplylene Fibre (PPF) and Alkali Resistance Glass Fibre (ARGF)

Abstract

This study experimentally investigated the flexural and ductility performance of hybrid fibre reinforced concrete, using polypropylene fibres (PPF) and alkali resistance glass fibres (ARGF). The fibres were added to grade 25 concrete at different proportion of 0.5%, 1.0%, 1.5% and 2.0% by percentage volume of concrete. A total of twenty four beam samples were tested for flexural strength and ductility test. The beam samples attained their maximum flexural strength at 1.0% fibres volume with hybrid fibre ratio of 60% ARGF and 40% PPF. When compared with the plain concrete, 37.5% deflection ductility increment was attained at fibre volume of 2.0% with fibre percentage ratio of 80% ARGF and 20% PPF.

Keywords: Hybrid fibre, polypropylene fibre, alkali resistance glass fibre, reinforced concrete, flexural strength, ductility, deflections