Evaluation of Fly Ash as Cement Subtitution and as Concrete Addition for Sustainable Normal Strength Concrete Mix Design

DOI

10.2991/978-94-6463-768-7_44How to use a DOI?

Keywords

Fly Ash Concrete; Cement Substitute; Concrete Additive

Abstract

Many factors influence the strength of concrete, including the quality of the materials and admixtures used, the composition of the materials, the method of manufacture and curing. Therefore to achieve the design strength of concrete, it is necessary to conduct aggregate inspection, use suitable admixtures, determine the composition of the materials through the mixture design, maintain the quality of the work and carry out curing until the optimum concrete compressive strength is achieved. The utilize of coal as fossil fuels is still used in the Anggrek PLTU to fulfill electricity demands in Gorontalo Province. The use of this fuel produces a very large amount of fly ash waste. Utilization of waste needs to be continued to be carried out to reduce the negative impact on the environment, one of which is to improve the strength of concrete. This study aims to analyze the right composition of materials, especially the percentage of fine aggregate to coarse aggregate. This study also evaluated the use of fly ash in the concrete mixture, both as a cement substitute and as an additive. The composition of the materials that produced the best mixture in this study was at a percentage of 40% sand and 60% crushed stone. Meanwhile, the use of fly ash that produces the most optimum results is when fly ash is used as much as 5% of the weight of cement as an additive.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Rahmani Kadarningsih
AU  - Komang Arya Utama
AU  - Alpian Katili
AU  - Abdul Said Bolota
PY  - 2025
DA  - 2025/07/07
TI  - Evaluation of Fly Ash as Cement Subtitution and as Concrete Addition for Sustainable Normal Strength Concrete Mix Design
BT  - Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
PB  - Atlantis Press
SP  - 396
EP  - 404
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-768-7_44
DO  - 10.2991/978-94-6463-768-7_44
ID  - Kadarningsih2025
ER  -