Abstract

Concrete is the most extensively used construction material in the world, which consumes natural resources like lime, aggregates and water. The worldwide production of cement has greatly increased, due to this production environmental pollution increases with emission of CO2 gas. To reduce this effect cement was replaced by some supplementary materials like Metakaolin, Fly ash, Bottom Ash, Ground Granulated Blast Furnace Slag GGBS and Rice Husk etc.. In this content Metakaolin was a pozzolanic material used in wide range in replacement of cement. Metakaolin is dehydroxylated aluminum silicate, due to its pozzolanic activity the strength properties and durability properties of concrete increases and reduction in Porosity and Permeability also. Now a day's availability of natural sand is constraint, so alternative material called ROBO Sand having similar properties as that Natural Sand is used in place of Natural sand to study the fresh and hardened properties of concrete. In this present investigation cement is replaced partially with metakaolin in varying percentage i.e. 0 , 6 , 12 , 18 and 24 and natural sand with 45 ROBO sand to get the different concrete mixes. The fresh and mechanical properties of concrete i.e. workability slump test and compressive strength, split tensile strength and flexural strength at 7 days, 28 days and 56 days are studied of the different concrete mixes and results are compared with conventional concrete. Jyoti Rani | Shashi Sharma | Vikram Dhillon "Improving Properties of Concrete Replacing Cement and Natural Sand with Metakolin and Robo Sand" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23944.pdf Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/23944/improving-properties-of-concrete-replacing-cement-and-natural-sand-with-metakolin-and-robo-sand/jyoti-rani

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