Experimental Investigation on Replacement of Conventional Sand by M-Sand with Silica Fume

This paper has to presents the industrial by product of silica fume can be utilized to enhance the strength and water permeability characteristics of High strength Concrete. The utilization of these industrial by product is becoming popular throughout the world because of the minimization of their potential hazardous effects on environment. This paper investigates the effect of silica fume as a replacement of m-sand on compressive strength, flexural strength, tensile strength of high strength of concrete .The replacement level of silica fume on concrete as 10%. Water-cement ratio was kept 0.42 for all cases. This project aims a fully replacement of sand with M-sand as an alternative material. However this cannot be brought in as such as M-sand does not have great physical properties. Thus the silica fume will be required to achieve this replacement in an effective manner. The project is going to be performed by total of 36 plain concrete specimens were casted which includes cubes, beams and cylinders of grades M30 and M40. The specimens are tested for compressive strength and flexural strength over a period of 7days and 28days.Testing the fresh concrete for workability and harden concrete for strength.