Feasibility Study on Utilization of Compost as a Partial Replacement of Fine Aggregate in Conventional Concrete

Feasibility Study on Utilization of Compost as a Partial Replacement of Fine Aggregate in Conventional Concrete

Vanitha Sankararajan, Karthigai Priya Pandiaraj

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Abstract. Solid waste management is the biggest challenge due to population growth. Lack of awareness about onsite processing of solid waste implies production of huge quantity of solid waste which is unmanageable. In this study an attempt is made to utilize the degraded solid waste called compost which is collected from municipal site and is used as a filler material in concrete. Compost is replaced for fine aggregate with 5%, 10%, 15% and 20% in conventional concrete. The compressive strength results at the age of 28 days are 30.5, 19.8, 16.8 and 18.2 N/mm2 respectively. Result indicates 5% replacement of compost is effective in concrete. The concrete specimen made with compost (CVC) and conventional concrete (CC) are exposed to an elevated temperature of 200°C, 400°C, 600°C and 800°C respectively. Result indicates the conventional concrete shows 5.3%, 6.1%, 15% and 24% compressive strength loss whereas 5% compost replaced specimen shows 10%, 11 %, 23.2% and 58.2% respectively. At an elevated temperature, both conventional concrete and compost-based concrete lost its strength. The reason could be thermal incompatibility between the aggregates and concrete. However, the loss of compressive strength is almost double in CVC than CC. The possible reason could be volatile compounds may evaporate in CVC at high temperature. The weight lost is observed in CC varies from 2.4 % to 4.5 % whereas CVC shows 6% to 7% from 200°C to 800°C. Weight lost is 3% more in CVC specimen than CC specimen.

Solid Waste, Compost, Concrete, Compressive Strength, Loss of Compressive Strength

Published online , 8 pages
Copyright © 2022 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Vanitha Sankararajan, Karthigai Priya Pandiaraj, Feasibility Study on Utilization of Compost as a Partial Replacement of Fine Aggregate in Conventional Concrete, Materials Research Proceedings, Vol. 23, pp 60-67, 2022

DOI: https://doi.org/10.21741/9781644901953-8

The article was published as article 8 of the book Sustainable Materials and Smart Practices

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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