In this study, concrete was prepared by complete replacement of sand and partial replacement of cement by Fly-Ash
using different admixtures like NaOH- Na2SiO3 solution, CaO- Na2SiO3 solution, CaO- Na2SiO3 gel and Micro Silica in order
to evaluate the effects of these admixtures on properties of HVFA concrete. Solutions and Gel were prepared by mixing both
materials in different ratios. It was noted down in mix proportions.