Volume : 7, Issue : 7, JUL 2021

BEHAVIOUR OFSTEEL FIBRE REINFORCED CONCRETE: AN EXPERIMENTAL STUDY

DR.R. SUBASH CHANDRA BOSE

Abstract

The main objective of this investigation was to study the behavior of Steel Fiber Reinforced Concrete (SFRC). Hooked end fibers and corrugated fibers with aspect ratio of 55 were used to reinforce concrete. Specimens were cast without fibers and with fibers of dosage 0.5% and 1%. Tests were conducted for studying the compressive, tensile, flexural strength and energy absorption. Compressive test on cubes were conducted on cubes of size 150 mm x 150 mm x 150 mm. Fifteen beams of length 700 mm and cross-section 150 mm x150mm were cast, cured for 298days by immersion in water and tested under two point loading to find flexural strength, toughness and stiffness. An empirical equation for finding the toughness index was developed based on fibre percentage. Thirty panels were cast with dimension 500 mm x500 mm x50mm and 500 mm x 500 mm x100mm. Split tensile tests were conducted on 150 mm cylinders to evaluate the tensile strength of concrete. Static point load test was conducted on each panel to calculate the energy absorption, ductility index and secant stiffness was found.

Keywords

STEEL FIBRE REINFORCED CONCRETE, STATIC LOAD, PANELS, BEAMS, TOUGHNESS, ENERGY ABSORPTION.

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