Flexural behavior of Reinforced Fly Ash Concrete in Comparison to Reinforced Normal Concrete beams in Terms of Cracking Load and Ultimate Load Carrying Capacity
B.K. Narendra1, T.M.Mahadeviah2
1Dr. B.K. Narendra, Principal, BGS Institute of Technology, B G Nagar, Karnataka, India.
2Dr. T.M. Mahadeviah, Department of Civil Engineering, BGS Institute of Technology, B G Nagar, Karnataka, India.
Manuscript received on November 09, 2014. | Revised Manuscript received on November 21, 2014. | Manuscript published on December 30, 2014. | PP: 37-40 | Volume-4 Issue-2, December 2014. | Retrieval Number: E3177063514/2013©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: Fly ash or pulverized fuel ash is the residue of the combustion of finely ground coal used in thermal power plants. It is removed by the dust collection system as fine particle residue from the flue gases before they are discharged into the atmosphere. Use of Fly ash in concrete will not only solve the problem of disposal, but will also reduce the consumption of cement, which is a material whose production is energy intensive. Fly ash concrete has found extensive application in mass concrete, pre-cast concrete, concrete used for pavements, structural concrete and roller compacted concrete with the added advantages of increased workability, impermeability, resistance to chemical attack and increased durability in comparison to ordinary Portland cement concrete. Hence, this paper present the investigation of comparison between the flexural behavior of reinforced Fly ash concrete beams with that of reinforced normal concrete beams and increase the confidence levels of designers and other beneficiaries in using reinforced Fly ash concrete as a structural material. The flexural behavior of reinforced Fly ash concrete beams with different cement replacement levels (20%, 35% and 50%) are compared with reinforced normal concrete beams (without containing Fly ash) under similar conditions. All the beams are reinforced as balanced sections, cured and tested at 28 days. These investigations were conducted with three grades of concrete i.e. M30, M40 and M50. The flexural behaviour of these beams is discussed in terms of its cracking load and ultimate load carrying capacity.
Keywords: Fly ash, Cement replacement material, Concrete beams, Flexural behavior of reinforced Fly ash concrete, Cracking load capacity and Ultimate load capacity.