Feasibility Studies for Development of Cement Free Natural Fiber Reinforced Fly-ash Based Geo-polymer Concrete

In the scenario where demand of concrete is a continuous growing sector, it has become necessary to research for the options of cement concrete replacement with the material that offers same compressive strength. Geo-polymer is one of those alternatives that can replace concrete suitably and also they are very effective in handing environmental threats like fly-ash is a very efficient manner. Geo-polymers are the binding materials made by mixing fly-ash (pozzolanic material) with alkaline solution (activator) in a proper proportion. Also to provide flexural strength to the material under observation, we have induced it with naturally occurring sisal fiber in 0.5%, 1%, 1.5%, 2% and 2.5% of fly-ash. On applying tests for compressive and flexural strength, 2% of sisal fiber by weight of fly-ash has given the optimum results. Furthermore conclusions have been drawn in the study.