Flexural Performance of Sustainable Fly Ash Based Concrete Beams

Abstract

The demand for concrete is high due to its solid strength and flexibility. To produce more concrete requirement of cement is very large. The production of concrete releases CO2 into the atmosphere. This can lead to global warming. By including other substances that have a cementations tendency, cement consumption can be decreased. To lower the cement consumption in concrete, a variety of pozzolanic ingredients are being used. It is being investigated whether fly ash can replace cement. Flexural tests were performed on reinforced concrete beams with fly ash contents ranging from 0% to 60% and binder contents of 400 and 450 kg/m3 with a water binder ratio of 0.4. The beam size is 100X200mm with a length of 1.2 m. It was observed that all the beams failed under compression in both mixes. In both, the mixer’s depth of crack is reduced when compared with the fly ash incorporated beams with no-fly ash concrete beams. The quick spread of the fracture is slowed down by the addition of fly ash to concrete. The filler effect, which aids in pore refinement and prevents the creation of cracks as well as the enlargement of propagated cracks, is initiated in the concrete as the fly ash content rises. According to the experimental findings, the load capacity of RC beams containing 30% fly ash is the greatest of all the beams. The outcomes for exhibit the same behaviour. Compression resistance. Finally, it was shown that, versus ordinary concrete RC beams, the inclusion of fly ash boosted the beam’s capacity to carry loads by up to 40% fly ash replacement. Whenever the fly ash content is increased by up to 40% replacement, the RC beam’s final deflection increases.