Experimental Investigation on Strength and Durability of Concrete Incorporated with Silica Fume and Fly Ash
V. Gopi1, K. Shyam Chamberlin2

1V. Gopi, P.G. Student, Department of Civil Engineering, Koneru Lakshmiah Educational Foundation, Vaddeswaram Guntur (A.P), India.
2K. S. Chamberlin, Associate Professor, Department of Civil Engineering, Koneru Lakshmaih Educational Foundation, Vaddeswaram Guntur (A.P), India.
Manuscript received on 02 May 2019 | Revised Manuscript received on 14 May 2019 | Manuscript Published on 28 May 2019 | PP: 471-477 | Volume-7 Issue-6C2 April 2019 | Retrieval Number: F10850476C219/2019©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: The prime concern of the environmental experts on the construction industry is its sustainability due to environmental impacts. The emission of CO2 has reached to its all-time high during this decade due to the increased construction activity and production of cement. While the domain experts and researcher’s exploration for an alternative to cement is continuing, they placed options for partial replacement of cement before alternatives to cement, to dig further into their studies. Some of such options are the pozzolanic materials that include fly ash and silica fume. Basically the Fly Ash and Silica Fumes are industrial by-products. In this study, the optimal percentage of these by-products for partial replacement of cement is studied in respect of their resulting concrete’s strength properties. For fly-ash, 10%, 15%, 25%, and 35%, of replacement is tried and for silica fume, 0%, 4%, 6%, 8%, and 10%, of replacement is tried to arrive at their optimal replacement to get the desired strength and durability properties of the concrete. Compressive strengths were tested on cubes, split tensile strengths were tested on cylinders and flexural strengths were tested on beams. The specimen’s durability properties were tested with sulphate and acid attacks. The results were amazing, the usage of these pozzolanic materials, as a partial replacement of cement, in conventional concrete is resulting to enhancement of strength and durability properties. Hence these pozzolanic materials are the promising options to reduce CO2 emission of the construction industry.
Keywords: Silica Fume, Fly ash, Compressive Strength, Split Tensile Strength, Flexural Strength, Durability.
Scope of the Article: Properties and Mechanics of Concrete