An Investigation into the Flexural and Bending Properties of Activated Fly Ash Concrete

In many infrastructure projects, cement concrete is the most extensively utilized building material. The construction industry is increasingly developing and using mineral admixtures for cement substitution, owing to cost savings, energy savings, environmental production, and resource conservation. The goal of this research is to replace cement in concrete with activated fly ash. The chemical activation of low calcium fly ash is highlighted in the article. Activation of fly ash is now widely used to improve the efficacy of fly ash and speed up the pozzolanic qualities of the material. Activated fly ash enhances the strength and durability of concrete at an early age, as well as its corrosion resistance. The fly ash is activated using a variety of processes, including mechanical (physical), thermal, and chemical activation. Chemical activation of fly ash by alkaline activators (i.e. alkaline solutions of high alkaline concentration chemicals like gypsum, sodium silicate and calcium oxide, KOH, etc.) improves the effectiveness of fly ash by dissolving the glassy layer of fly ash particles in cement concrete, increasing corrosion resistance. Chemical treatment of fly ash using chemical activators is used in this dissertation to increase its quality. The mechanical parameters of activated fly ash concrete, including compressive strength, split tensile strength, flexural strength, and flexural strength of active fly ash reinforced concrete beams, are investigated. Chemicals such as sodium silicate and calcium oxide are utilized to activate the fly ash at the ratio of 1:8 for this project.