Abstract
Geopolymer is an inorganic alumina silicate polymer synthesized from predominantly silicon and aluminium materials of geological origin or byproduct materials like fly ash. The use of geopolymer technology substantially reduces the CO2 emissions by the cement industries and utilizes the waste materials such as fly ash. The fresh geopolymer concrete has stiff consistency and high viscosity. The chemical reaction period is substantially fast. To evaluate the performance of geopolymer mortar, the tests conducted are cube compressive strength, cylinder compressive strength and split tensile strength. Strength tests revealed that the compressive strength of geopolymer mortar cubes increases 2 to 2.5 times the compression strength of the control mortar. The main advantages of the present investigation are 100% fly ash utilization, complete elimination of cement, no water/autoclave curing, low water absorption and high compressive strength.