An Experimental Investigation on Performance of High Volume Fly Ash with Hybrid fibre based concrete

Abstract

Concrete has become a worldwide standard for construction. Overheating caused by the hydration process can cause cracking and premature ageing in cement with high content. The present experimental work was successful in replacing cement with varying percentages of High-Volume Fly Ash (0%, 50%, and 70%). (HVFA). At 7, 14, 28, 56, and 90 days, we compared HVFA to conventional concrete. Mechanical and longevity tests, in addition to an analysis of microstructure characteristics, were carried out to gain insight into performance. The Rapid chloride penetration test (RCPT), to find out how long the compounds would last, we put them through a battery of sorptivity and water absorption tests. The mechanical strength of concrete is greatest when HVFA is combined with a dosage of 50% fly ash. C-S-H gels have been developed to reduce porosity, leading to longer-lasting mixes. Better results were seen when the traits were cured for longer periods of time. The permeability of concrete (as determined by the movement of chloride ions) decreased slightly between the ages of 28 and 90. After 90 days, the cured mixtures had much lower water absorption (7, 14, 28, 56 and 90 days). From seven days to ninety days, in this matrix of the concrete, the flattening of the quartz and mullite peaks in the XRD pattern indicates a decrease in void content and development of the C-S-H gels. The construction industry is a major contributor to the depletion of natural resources and the creation of hazardous waste due to its excessive use of raw materials. Waste can be reduced and resources conserved through the use of alternatives. Concrete mixes that incorporate industrial and biological waste as an alternative to traditional materials have similar justifications. The concrete used to make the test specimens varied in the amount of fibre added to it.Banana fibre (zero through four), steel (zero through four), etc. Both the tensile and compressive strengths of these samples were calculated,