As concrete consumption is being done at a very rapid rate in large quantities in construction industry, its main ingredients such as cement and sand will become scarce in future. Hence there is a need of finding replacements for ingredients in concrete, especially for cement and sand. High demand for cement can be met by partial replacement of cement with rice husk ash which is a by-product of rice and is available in plenty in India. Natural sand which is found near river beds may get exhausted soon in near future because of its high demand in construction. Therefore, natural sand can be partially replaced by manufactured sand which is obtained by crushing granite rocks, which are abundant in nature. A critical review of properties of concrete using manufactured sand and rice husk ash reveals that the compressive strength, flexural strength and split tensile strength of concrete increases with increase in percentage of Rice Hush Ash in cement upto 15% and showed downward trend for higher percentage replacements. Similarly, partial replacement of fine aggregate by manufactured sand in concrete upto 10% enhances strength and durability properties, but workability of concrete reduces. This could be overcome by adding stone dust to the manufactured sand concrete. Current study clearly says, for better utilisation of Rice Husk Ash and Manufactured sand in various concrete mixes more investigations are required. © IAEME Publication.