Experimental Study on Corrosion Resistivity of Low Calcium Fly Ash Based Geo Polymer Concrete

Abstract

The production of Portland cement, a main component of making concrete, contributes significant amount of greenhouse gas, because the production of one ton of Portland cement also releases about one ton of carbon dioxide gas into the atmosphere. Therefore, the introduction of a novel binder called ‘geopolymer’ by Davidovits promises a good prospect for application in the concrete industry as an alternative binder to Portland cement.

In terms of reducing global warming, the geopolymer technology could reduce the C02 emission to the atmosphere caused by cement and aggregates industries by 80%.Fly ash-based geopolymer concrete is manufactured using fly ash as its source material and does not use Portland cement at all. Beside fly ash, alkaline solution is also utilized to make geopolymer paste which binds the aggregates to form geopolymer concrete. The geopolymer concrete has proven to be having excellent mechanical characteristics and better durability characteristics like permeability, resistance against sulphate and acids.