---------------------------------------------------------------------***--------------------------------------------------------------------Abstract This research investigates and evaluates the results of geopolymer concrete beams subjected to torsion and compared with conventional concrete beams. Eight beams, four with geopolymer concrete and four with conventional concrete were fabricated and tested. Study includes the general cracking characteristics, pre cracking behaviour, post cracking behaviour, crack width stiffness and ductility. From the compression and split tensile tests, the optimum replacement of silica fume is found to be 40%. The ultimate torque resistances of geopolymer concrete is less in comparison to that of conventional concrete. Further, with increase in reinforcement percentage, the ductility of geopolymer concrete increase.