• K. Naga Vishnuvardhan
• V. K. Visweswara Rao
• Dr. M. Srinivasula Reddy

Geopolymer concrete is a versatile product gains importance due to its reduced greenhouse effect thereby global warming, it is devoid of cement. Geopolymer concrete (GPC) is prepared by geopolymerization of alkaline solution with binder materials. In the present study METAKAOLIN and GGBS are the binder materials. This paper deal with the effect of silica fume on the mechanical properties of METAKAOLIN-GGBS based Geopolymer concrete. Sodium silicate (Na2Sio3) and sodium hydroxide (NaOH) are used as alkaline activators. The molarity of NaOH is 12M. The ratio of Na2Sio3 and NaOH is 2.5. The samples prepared were cured at ambient temperature. Further study is done in the above GPC mix by replacement of METAKAOLIN with silica fume at different percentages i.e., 10%, 20%, 30%, 40%. Mechanical properties of geopolymer concrete with silica fume were studied and compared with conventional GPC. It was found that the optimum replacement of silica fume for METAKAOLIN was 20% corresponding to maximum strength properties

Geopolymer concrete, METAKAOLIN, GGBS, Silica Fume, Alkaline activators, Mechanical properties.

"Effect of Silica Fume on Metakaolin-Ggbs Based Geopolymer Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 1, page no.b495-b498, January-2023, Available :http://www.jetir.org/papers/JETIR2301172.pdf

"Effect of Silica Fume on Metakaolin-Ggbs Based Geopolymer Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 1, page no. ppb495-b498, January-2023, Available at : http://www.jetir.org/papers/JETIR2301172.pdf