Steel Fibres as Flexural Cracks Inhibitor in Reinforced Fibrous Concrete Beams under Static Loading

Abstract

ABSTRACT:The introduction of steel fibres in concrete beam has been proposed as flexural cracks inhibitor. This research was conducted focusing on simply supported beam to determine the crack propagations in flexure by varying the steel fibre content placement in the beam. The 25 kg/m 3 steel fibre was chosen. Seven sets of 150×250×1000mm concrete beams consists of three RC beams with full steel fibrous concrete (SFRC), three RC beams with steel fibre placed within tension zone of the beam, three RC beams with steel fibre placed at the half of beam's tension zone, two conventional RC beams as control sample, one unreinforced concrete beam with full steel fibre, one unreinforced concrete beam with steel fibre at tension zone only and one unreinforced concrete beam with steel fibre at half of tension zone. The addition of steel fibre in the conventional RC beam showed that it inhibits the flexural cracks.