Analyzing Influence of Mix Design Constituents on Compressive Strength, Setting Times, and Workability of Geopolymer Mortar and Paste

Geopolymer concrete and mortar have evolved over the years as potential alternatives for reducing greenhouse gases associated with cement production. This current research was aimed at investigating optimum dosage concentration of sodium hydroxide required to leach out silica alumina oxides in fly ash geopolymerization take place. Blackish grey from Morupule, Botswana, synthesized by varying (NaOH) 98% purity between 8 M 14 M, respectively. The ratio influence dissolving carried values 0.55, 0.62, 0.75. results showed that workability geopolymer paste decreased increase alkaline activator. highest achieved a 0.75 : 1. compressive strength, setting time, can be controlled adjusting A 1.5 1 found most suitable achieving high while workability. Furthermore, were range 105 143 mm, ranges initial final times 280–350 950–1170 minutes, study is significant because no previous has geopolmerization Morupule result its unique characteristics. These findings important implications development sustainable construction materials. main finding reaction place, NaOH/fly should kept 0.55 molarity 12 avoid leaching other might weaken strength.