Effect of Synthesis Parameters on the Compressive Strength of Fly Ash Based Geopolymer Concrete
نویسندگان
چکیده
The paper presents the effect of different synthesis parameters, such as (a) fly ash to alkaline solution ratio, (b) concentration of NaOH solution, (c) concentration of sodium silicate solution, (d) geopolymer solids to water ratio and (e) sodium silicate to sodium hydroxide solution ratio, on the compressive strength of geopolymer concrete synthesized from fly ash of Indian origin. It is observed that compressive strength of the geopolymer concrete increases with the increase of the above parameters and reaches at an optimum value above which, the strength of the concrete decreases. In the present study, the optimum values for fly ash to alkaline solution ratio, concentration of NaOH solution, concentration of sodium silicate solution, geopolymer solids to water ratio and ratio of sodium silicate solution to NaOH solution are found to be 60:40, 12 M, 2 M, 2.15 and 2.5 respectively.
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