Properties of mortar made with bottom ash and silica fume as sustainable construction materials
ISSN: 1708-5284
Article publication date: 1 April 2022
Issue publication date: 21 August 2023
Abstract
Purpose
This study aims to investigate the properties of mortar made from a bottom ash substitute as a sustainable construction material. It is believed that the use of cement in concrete construction contributes to the release of carbon dioxide into the atmosphere, which has been a consistent increase in recent years. The utilization of bottom ash waste is expected to reduce pollution associated with cement production.
Design/methodology/approach
Bottom ash is used as replacement materials for cement and fine aggregate in the manufacture of mortar. Bottom ash substituted for cement of 10%, 20% and 30% of the total weight of the binder, whereas bottom ash substituted for the fine aggregate of 30%, 40% and 50% of the total weight of the sand. Binder properties were determined using scanning electron microscopy and energy dispersive X-ray. Meanwhile, the fresh properties (slump flow) and hardened properties were determined (compressive strength and mass density). In the hardened properties test, two types of curing were used: water and sealed curing.
Findings
The compressive strength of mortar decreased as the amount of bottom ash as cement replacement. However, the compressive strength increased when bottom ash was used as aggregate replacement. Additionally, bottom ash was sufficient as a substitute for fine aggregate than as a substitute for cement.
Originality/value
This research presents test results that are more straightforward to apply in the construction site.
Keywords
Acknowledgements
The authors wish to acknowledge Lembaga Penelitian, Publikasi dan Pengabdian Masyarakat (LP3M) Universitas Muhammadiyah Yogyakarta as an internal grant provider in 2021. Additionally, the authors wish to express gratitude to the structural and material laboratory staff at Department of Civil Engineering Universitas Muhammadiyah Yogyakarta and to Erwiena Nurmala Augustin, Hilal Aulia Rahman, Agustin Dwi Prasintasari, Bagas Dwi Nursyabani, Yanuar Zayu Perdana and Nia Selvia Paramian who have helped research as research assistants on this project.
Citation
Saleh, F., Gunawan, M.A., Yolanda, T.I., Monika, F., Prayuda, H., Cahyati, M.D. and Pratama, M.M.A. (2023), "Properties of mortar made with bottom ash and silica fume as sustainable construction materials", World Journal of Engineering, Vol. 20 No. 5, pp. 835-845. https://doi.org/10.1108/WJE-08-2021-0481
Publisher
:Emerald Publishing Limited
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