ABSTRACT In the recent time, attempts are vigorously made to enhance the fresh state and hardened properties of concrete. Hence to get high strength concrete with good rheology, natural admixtures are progressively used to the concrete during mixing stage. Use of chemical admixtures in concrete is a common practice in modern construction. Although chemical admixtures improve properties of concrete but also create leaching problem. Our project, the various experiments performed to identify the influence of natural organic materials as admixture on durability of concrete. In this study, the influence of natural admixture Gramflour on the engineering properties of concrete has been investigated for different w/c ratios. In hardened concrete the specimens are casting with different percentage of Gram – flour that is cube 150mm x 150mm x 150mm and the cylinder is 150mm x 300mm. The strength of hardened concrete is predicted with respect to the following Strength tests such as Compressive strength, split tensile strength test and durability tests such as water absorption and water permeability tests are studied under 7, 14 and 28 curing days were assessed in order to enumerate the effect of Gram - flour on the concrete. Finally, the fresh and hardened concrete properties are compared to conventional concrete. Keywords: Concrete, Partial Replacement, Cement, Gram Flour.