Influence of seawater mixing on fresh and mechanical properties of oil palm shell lightweight aggregate concrete containing spent garnet

Jamaludin, Nur Farah Aziera and Muthusamy, Khairunisa and AbuHashim, Muhammad Fitri and Mohamad Nazle, Haiqal Akashah and Othman, Nor Hazurina (2023) Influence of seawater mixing on fresh and mechanical properties of oil palm shell lightweight aggregate concrete containing spent garnet. In: INTERNATIONAL CONFERENCE ON CIVIL ENGINEERING AND TECHNOLOGY 2023 (CIVENTECH 2023).

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Abstract

The rapid advancement in construction practices has led to a higher demand for natural aggregates in the production of concrete. Simultaneously, there has been an increase in pollution due to the improper disposal of industrial waste. Effective waste management has become imperative to prevent environmental harm. A sustainable solution involves incorporating waste materials such as oil palm shells (OPS) from the palm oil industry and spent garnet from shipbuilding activities into concrete production. This research aims to explore the impact of introducing spent garnet as a partial substitute for sand on the fresh and hardened properties of lightweight aggregate concrete (LWAC) made with OPS, mixed with seawater. Two sets of concrete mixes were prepared, varying the proportion of spent garnet as a partial replacement for fine aggregate, and both seawater and freshwater were used in the mixing process. Laboratory tests were conducted to evaluate workability, oven-dry density, and compressive strength of the concrete. The findings indicate that the workability decreases in freshwater but improves in both freshwater and seawater when spent garnet is added. All mixtures containing spent garnet qualify as LWAC. Notably, seawater-mixed OPS LWAC, with 10 % spent garnet, demonstrates the highest compressive strength. The use of seawater accelerates hydration, enhancing concrete strength compared to freshwater. In conclusion, incorporating spent garnet as a replacement for sand in concrete production results in environmentally friendly OPS LWAC. This approach contributes to waste reduction and minimizes reliance on landfills, promoting sustainable construction practices

Item Type:	Conference or Workshop Item (Paper)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2000-2891 Dynamoelectric machinery and auxiliaries. Including generators, motors, transformers
Divisions:	Faculty of Civil Engineering and Built Environment > FKAAB
Depositing User:	Mrs. Sabarina Che Mat
Date Deposited:	16 Oct 2024 03:04
Last Modified:	16 Oct 2024 03:04
URI:	http://eprints.uthm.edu.my/id/eprint/11786

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