Vol. 2, Issue 8, Part H (2016)

Abstract
This project is a study on the development of eco-friendly (geopolymer) concrete. Concrete made with Portland cement is the most widely used material on earth. The production of Portland cement clinker is expensive and ecologically harmful. The emissions generated by Portland cement productions are principal contributors to the greenhouse gas (GHG) effect where, 1 Ton of CO₂ produced for every Ton of OPC. Geopolymer binder is an innovative construction material and a real alternative to conventional cement. Geopolymer binder is a combination of alumina silicate as source material and alkaline solution. This study mainly focusing on development of mix proportions of C30 grade of Geopolymer concrete with 8 Molar, 10 Molar and 12 Molar were obtained. The mix proportion of Eco friendly of various concrete molarity obtained based on the mix proportions given in ACI Committee 211.1-91 with hundred percent replacement of cement by fly ash. The compressive strength of geopolymer concrete is achieved by adjusting the concentration of sodium hydroxide in the alkaline solution. Alkaline solution is combination of sodium hydroxide (NaOH) and sodium silicate (Na₂SiO₃). Totally 27 cubes of geopolymer concrete, of which 9 cubes for 8M, 9 cubes for 10 M and remaining 9 cubes for 12 M of C30 grade concrete were cast and tasted in the laboratory. For conventional cement concrete cubes 9 nos were cast and tasted for 7 days, 14 days and 18 days strength. The strength of geopolymer concrete is achieved in 24 hours after casting of specimens by heat curing. The results obtained are encouraging and similar to the corresponding strength of conventional cement concrete. Hence, the geopolymer technology can be effectively used in the construction industry in terms of saving energy consumption and resources and ultimately to save the ecosystem of earth.