Experimental Investigationon Strength Properties of M50 Grade Concrete with Replacement of Fine Aggregate by M-Sand–A Comparative Study with and without using Admixture
S.S. Saravanan1, P. Jagadeesh2

1S.S. Saravanan, Research Scholar, Department of Civil & Chemical Engineering, Vellore Institute of Technology and University, Vellore (Tamil Nadu), India.
2Dr. P. Jagadeesh, Professor, Department of Civil & Chemical Engineering, Vellore Institute of Technology and University, Vellore (Tamil Nadu), India.
Manuscript received on 10 July 2016 | Revised Manuscript received on 21 July 2016 | Manuscript Published on 30 July 2016 | PP: 20-24 | Volume-6 Issue-2, July 2016 | Retrieval Number: B2339076216/16©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In India, the conventional concrete is produced by mixing the cement, coarse aggregates and fine aggregates (river sand). In recent years, river sand has become a scarce material due to depletion of natural sources and creating environmental problem of water table depletion. it is essential toidentify an alternative material for fine aggregates (river sand). Mostcommonly indevelopmentof road sector such as theconstruction of high level bridges, elevated corridors and flyovers etc., the M50 Grade concrete is used extensively. Hence experimental investigationis carried out in respect ofworkability, strength and durability properties ofM50 concrete using manufacturedsand as fine aggregates and compared with the conventional concrete values. Using manufactured sand at 70% replacement of fine aggreagate, the compressive strength, split tensile strength and flexural strengthvalues increased by 12.09%, 12.50% and 16.67% respectively with super plasticizer compared to conventional concrete at 28days and 10.50%,11.36% and 11.20% respectivelywithout superplasticizer.Hence M50 concrete with manufacturedsand is found to be suitablefor concrete compared to conventional concrete with natural river sand.The use of manufactured sand is recommended with proper care in production of M50 Grade concrete by satisfying the requirement of gradation.
Keywords: Compressive Strength,Split Tensile Strength, Flexural Strength, Workability of Concrete,Super Plasticizer.

Scope of the Article: Concrete Structures