Development of Modified Recycled Aggregate for the Production of Sustainable Concrete
M. Siva1, Joel Vianneys2
1M.Siva, Department of Civil Engineering, Hindustan University of Technology and Science, Chennai, India.
2Joel Vianneys, Department of Civil Engineering, Hindustan University of Technology and Science, Chennai, India.
Manuscript received on 13 August 2019. | Revised Manuscript received on 17 August 2019. | Manuscript published on 30 September 2019. | PP: 8614-8618 | Volume-8 Issue-3 September 2019 | Retrieval Number: C6446098319/2019©BEIESP | DOI: 10.35940/ijrte.C6446.098319
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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: This paper deals with the treatment methods of recycled aggregate (RA) for its high water absorption which is due to the old mortar and micro-cracks on the surface of the recycled aggregate. Geopolymer paste which is made using class C & F fly ash are used for coating the recycled aggregate in order to reduce the water absorption (WA). The parameters which influence the coating of RA are fly ash content, molarity of alkaline solution, Liquid alkaline to ash ratio (LA/ash). The effect of each parameter on coating RA are analysed using Response surface methodology. It is observed that all the parameters has influenced the water absorption property of RA. LA/ash ratio depends on the molarity of the alkaline solution in reducing the WA of recycled aggregate. Coating of recycled aggregate with class C fly ash performed better than class F and uncoated recycled aggregate concrete. The optimal content of fly ash content, LA/ash ratio and molarity of solution are arrived using the statistical analysis are 4%, 0.35 and 9M respectively.
Keywords: Recycled Aggregate, Class C, Class F, Flyash, Compressive Strength, Water Absorption.
Scope of the Article: Mobile App Design and Development