Concrete is one of the most used construction materials nowadays. Portland cement is the major ingredient in concrete. The main factor that does not require Portland cement or emit greenhouse gases is geopolymer. The geopolymer technique described by Davidovits (1978) as an alternative to Portland cement in concrete shows promise. He suggested polymerising alkaline liquids with silicon and aluminium in geological sources or byproducts like fly ash, slag, and rice husk ash to make binders. He called these binders geopolymers. Geopolymers are most likely to come from fly ash and slag. So, this study looks at the mechanical, long-term, and microstructural properties of geopolymer concrete made from fly ash and ground granulated blast furnace slag. This project investigates how different amounts of class F Fly Ash (FA) and Ground Granulated Blast Furnace Slag (GGBS) change the mechanical and long-lasting properties of geopolymer concrete (GPC). Alkaline activators include Na₂SiO₃ and NaOH. This study examined the compressive, split tensile, bond, and flexural strengths. We also explored water absorption, rapid chloride permeability, and sulphate attack tests using low-calcium fly ash and ground granulated blast furnace slag-based geopolymer concrete. These parameters were measured at ambient room temperatures after 7, 28, 56, and 90 days of cure. This research looked at the short-term mechanical, long-term durability, and microstructural properties of GPC mixtures made from FA and GGBS. This study also evaluated short-term mechanical, durability, and microlevel GPC to M45 grade ordinary concrete. Fibre-reinforced geopolymer concrete has been studied. Different geopolymer concrete mixtures have been tested for mechanical and durability. Fibres were added to concrete at 0.25%, 0.5%, 0.75%, and 1.0% by volume. We tested the compressive, split tensile, and flexural strength of fibre-containing mixtures after 28 days. Similar mixtures' RCPT, water absorption, and acid attack have been tested.
Biru Charan (Wed,) studied this question.