Potential of Bagasse Ash as Alternative Cementitious Material in Recycled Aggregate Concrete
Yashwanth M K1, B.G.Nareshkumar2, Sandeep Kumar.D.S3
1Yashwanth.M.K, Department of Civil Engineering, MIT Mysore, Mandya, India.
2B.G.Naresh Kumar, Department of civil engineering, Maharaja Institute of technology mysore, Mandya, India.
3Sandeep kumar.D.S, Department of civil engineering, PESCE, Mandya, India.
Manuscript received on 19 August 2019. | Revised Manuscript received on 05 September 2019. | Manuscript published on 30 September 2019. | PP: 271-276 | Volume-8 Issue-11, September 2019. | Retrieval Number: K13190981119/2019©BEIESP | DOI: 10.35940/ijitee.K1319.0981119
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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 experimental study deals with assessing the potential of bagasse ash (SBA) as alternative for cement in recycled aggregate concrete. The natural coarse aggregate in concrete is partially replaced with 20%, 30% and 40% of the recycled coarse aggregates (RCA) and the cement is partially replaced with 10%, 15% and 20% SBA. The fresh properties of recycled aggregate concrete are assessed by conducting slump test. The slump increases with increase in the percentage of replacement of SBA and reaches 115mm in recycled aggregate concrete as compared to without SBA in recycled aggregate concrete. The hardened properties like compressive strength were assessed at 7 & 28 days, split tensile, flexural strength and modulus of elasticity were carried out at 28 days respectively. Compressive, split tensile strength, flexural strength and modulus of elasticity of recycled aggregate concrete decreased with increase in the percentage of replacement of RCA but with the partial replacement of cement with 10% SBA compressive, split tensile strength, flexural strength and modulus of elasticity of recycled aggregate concrete strength increases. The microstructural analysis revealed that interfacial transition zone of recycled aggregate concrete containing 10% SBA is better than recycled aggregate concrete without SBA. Based on test results, it can be inferred that 30% replacement of the RCA with NCA and cement with 10%SBA can be considered as optimum replacement level, considering its fresh, hardened and micro structural properties.
Keywords: Controlled mix; Recycled aggregate concrete; Sugarcane Bagasse ash (SBA); Fresh properties; Hardened properties; micro structural analysis.
Scope of the Article: Structural Engineering