With increase in industrialization the use of concrete has increased the production of cement which is not environment friendly as it has increased damages to the nature in search of limestone and energy involved. Rice Husk Ash is a waste product which is rich in silica andimproper disposal of rice hush ash (RHA) leads to air pollution and land fill problem. The Rice Husk Ash in presence of Silica – Alkali reactor acts as a binding material and can be used effectively in formation of geopolymer mortar. This study was as such carried out to investigate the properties of geopolymer concrete made with rice husk ash to check the suitability as a construction material. In order to achieve the objectives, the geopolymer mortar is being casted with mixture of Sodium Hydroxide and Sodium Silicate as silica alkali reactor with variable proportion of Alccofine i.e. 10%, 30% and 50% It was observed that the optimum quantity of RHA used in all cases was 70% by weight due to which the increase in compressive strength was measured in time interval of 3 days 7 days and 28 days. The strength of RHA based geopolymer mortar increases with increase in NaOH molarity and curing temperature. Similar trend of increase in strength with age was observed as observed in conventional (cement based) mortar at normal curing. It can be such recommended that RHA based sustainable mortar can be used in place of OPC based mortar.