An Innovative Method for Developing Sustainable Road Embankments with Lightweight Concrete Containing Palm Cell Ash
Keywords:
Industrial waste, Palm Oil Fuel Ash (POFA), Lightweight concrete, Sustainable Road constructionAbstract
The use of industrial waste as an alternative material in construction is a strategic effort to promote sustainable development. This study examines the effect of the compressive strength of light concrete due to the partial replacement of cement with Palm Oil Fuel Ash (POFA) in the mixture, for environmentally friendly road construction The concrete was designed to have a specific density of 0.8 g/cm³, with POFA replacing cement at levels of 5%, 10%, 15%, and 20%, alongside a control mix without POFA. Mechanical tests, particularly compressive strength assessments, were conducted at 7 and 28 days. The findings revealed that adding 5% and 10% POFA reduced the quality of lightweight concrete, while at 15% and 20%, an increase in compressive strength was observed. This improvement at higher POFA levels is attributed to more effective pozzolanic reactions within the mix. The lowest strength was recorded at the 10% POFA composition, with a compressive strength of 5.12 kg/cm², which still meets the requirements for lightweight concrete used in road embankments. Thus, incorporating POFA in concrete has the potential to enhance quality while reducing cement consumption, aligning with the principles of sustainable road construction.References
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