Abstract:-The most widely used material in this world is concrete. After water, concreteis placed in second position. The use of natural sand in conventional concretehas become of vital importance which is scarce to obtain. Sand is basicconcrete making construction material required in large quantities. Manufacturedsand is one among such materials to replace river sand which can be used as analternative fine aggregate in mortars and concrete. In general concrete is acombination of cement, fine and course aggregate. These days, natural riversand is difficult to acquire and extraction of sand from river has representedan awesome threat to environment. In addition, government has connectedlimitation on extraction of sand from riverbed. Subsequently, insufficiency ofnatural river sand and increase in demand contemplate research seek towardsalternate fine aggregate. This seek turns the research intention towardseffective utilization of Manufactured sand (M-sand) for commercial purpose.
Anattempt had been made in the present investigation to discuss the properties ofconcrete such as workability, strength and durability of concrete which isprepared by replacing natural sand with M-sand at different replacement levels(0%, 10%, 20%, 30%, 40% and 50%) for M25 and M30 Grade of concrete. Durabilityof the concrete is also tested by immersing the cubes in 5% hydrochloric acid,5%sodium hydroxide, 5% of sodium sulphate (Na2SO4) and 5% of magnesium sulphate(MgSO4).