Experimental study on properties of concrete using RHA and M Sand

Abstract

Cement is the most common and expensive binding material used in the field of construction. As the constructions are in numerous and rapid, the use of cement and cost is also increasing. Hence the use of admixtures and by-products are being used as additives to be economical and also to attain the same strength as in the normal concrete. This paper gives the study about the mechanical and durability properties of concrete with the constant replacement of cement with Rice Husk Ash (RHA) and fine aggregate with Manufacture Sand (M -Sand) in different proportions. A total of 6 mixes including control mix were done where 20% RHA has been constantly replaced with cement in all mixes and 0%, 25%, 50%, 75% and 100% replacement of M-Sand with fine aggregate were done for all the mixes. A total of 180 specimens including cubes and cylinders were casted and tested for the compressive strength, split tensile test, water absorption, acid resistance and sorptivity tests. The mixes containing 20% RHA with 50% and 75% M-Sand give economical results in all the mechanical and durability properties compared to control mix.