Performance Study On Ggbs Concrete With Robosand
Ramakrishna Samanthula, Mahendra Reddy Polimreddy
Index Terms: Robosand, GGBS, Slag, Supplementary Cementitious material, Alternative fine aggregate, Crushed sand, Rock sand
Abstract: Concrete is the most famous and extensively used building material, owes to its advantageous properties, production and maintenance over steel and timber. Concrete is a matrix consists of basic ingredients namely binding material, fine aggregate, coarse aggregates and water. Conventional binding material cement has now become expensive and its production involves undesirable environmental consequences such as heavy production of Carbon dioxide (CO2). Conventional fine Aggregate River sand has become scarce and its excessive use causes degradation of river bed and reduction in ground water recharge. To offset with these two challenges, an attempt has been made to produce concrete with supplementary and alternative materials. Ground granulated blast furnace slag which is byproduct of steel production, has been used to partially replace the cement. Robosand is manufacturing sand produced from granite stone, has been used as an alternative fine aggregate that completely replaces the river sand which is far superior than river sand in all aspects. Various combination have been made with different proportions of Cement, Ground Granulated Blast Furnace Slag, Robosand, Coarse aggregate and Water. Properties of concrete have been studied in fresh and hardened state for all combinations made and deducted the conclusions.
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