| Summary: | The cement demand in the construction industry in Malaysia reached 19.49 million metric tons in 2020 (Müller J (2021) Malaysia: Cement Production 2020 | Statista. Statista), giving a perfect view that the price of the material will rise following the re-opening of the industry after the Covid-19 pandemic. The main problem with using cement is that the carbon dioxide (CO2) emission from the cement production industry gets higher as the cement volume increases. Hence, waste material such as Palm Oil Fuel Ash (POFA) was used to reduce the use of cement. Only a few studies have used POFA in concrete applications. This research aims to analyze the mechanical properties of POFA in concrete as a partial replacement for cement and sand. The influence of POFA content in the range of 0 to 20% of cement and sand replacement on the slump test and strength characteristic level of concrete was identified. The concrete specimens were tested for strength at the age of 3, 7, and 28 days. The curing for this research is water cured. The result indicated that the compressive strength of concrete containing POFA replacement as cement and sand performs better than the normal concrete. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.
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