Department of Civil Engineering, Faculty of Engineering, Universitas Pancasila, Jakarta, Indonesia.
Received on 27 January 2023; revised on 08 March 2023; accepted on 10 March 2023
The amount of fly ash waste is increasing, causing environmental and storage problems. One solution is to utilize the fly ash as an artificial aggregate. This research focuses on getting the right formula for mixing fly ash, cement, and superplasticizer (SP). The tests carried out were compressive strength at 3, 14, 28, and 56 days. The results showed that the best composition with a ratio of cement: fly ash of 1:4 added with a superplasticizer of 1.2% by weight of the mixture resulted in a compressive strength of 79 MPa at 56 days of age.
Fly ash; Cement; Superplasticizer; Compressive strength
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AR Indra Tjahjani, Jonbi, Daral Suraedi, Okeu Aziz Maulana, Ressy Warisatu Awwaliyah and Teuku Rifqi Maulana. The use of coarse aggregate from fly ash and its effect on the mechanical properties of concrete. World Journal of Advanced Engineering Technology and Sciences, 2023, 08(02), 072–077.Article DOI: https://doi.org/10.30574/wjaets.2023.8.2.0075