• Ravi Sanker Reddy .Battu
• Dr.D.V.Prasada Rao

This paper contains results of the tests carried out to find the effect of different concentrations of sodium hydroxide solution on the strength of the geo-polymer concrete. Now a days, a big problem facing by the world is carbon dioxide. The production of Ordinary Portland cement causes emission of Co2 which leads to environmental pollution. Supplementary material like fly ash can be used in place of ordinary Portland cement to reduce Co2. The Concrete made by activation of Fly ash with highly alkaline liquids is known as geo-polymer concrete. The alternative material which is sustainable and eco-friendly to Portland cement concrete is Geo-polymer concrete (GPC). Highly alkaline liquids like Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3) are used in this investigation for the polymerization process. Different concentrations of sodium hydroxide solution i.e. 8M, 10M, 12M, 14M and 16M were taken in preparing different GPC mixes and the compressive strength of each mix were obtained .The size of specimen used for testing is 100mm X 100mm X 100mm.Oven curing was adopted in this investigation and cubes are kept in an oven for 1 day,3 days,7 days and 28 days and then GPC specimens were tested for Compressive strength.. The result shows that compressive strength of GPC increases with increase in molarity of Sodium Hydroxide solution.

Alkaline Solution, Concentration, Fly ash, Geo-polymer concrete, Sodium hydroxide, Sodium silicate, Molarity.

"Effect of Concentration of Sodium Hydroxide Solution on Compressive Strength of Geopolymer Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.688-691, February-2019, Available :http://www.jetir.org/papers/JETIRAB06130.pdf

"Effect of Concentration of Sodium Hydroxide Solution on Compressive Strength of Geopolymer Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp688-691, February-2019, Available at : http://www.jetir.org/papers/JETIRAB06130.pdf