Abstract
This study falls within a global approach aiming to preserve the environment on the one hand and to valorize high-density polyethylene (HDPE) plastic waste on the other hand. The aim is to study the possibility of using HDPE particles as a sand substitute in the manufacturing of geopolymer mortars based on an industrial sludge. A structural, mineralogical and mechanical study was carried out on the control mortar (without plastic) and mortars with different percentages of plastic waste. The DRX spectra of the industrial sludge used as a precursor of geopolymer materials shows the presence of two crystalline phases (Quartz, muscovite). After the geopolymerization reaction, no other crystalline phases are formed in all DRX spectra of geopolymeric mortars prepared on the basis of calcined industrial sludge, sand and HDPE plastic. The Raman spectra of geopolymeric mortars show the presence of several geopolymeric phases. The compressive and flexural strength of mortars increases with the increase of the percentage of HDPE aggregates as a substitute for sand compared to sand-based geopolymer mortars. Geopolymer mortars made from the plastic waste replacing sand have a higher mechanical performance than sand-based mortars. All these results lead to the conclusion that the plastic waste can be a potential source of raw material for the manufacturing of geopolymer mortars.
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Jeniah, H., El Ayadi, H., Belmokhtar, N., Ammari, M., Ben Allal, L. (2022). Development of a New Waste Valorisation Process: A Case Study. In: Kacprzyk, J., Balas, V.E., Ezziyyani, M. (eds) Advanced Intelligent Systems for Sustainable Development (AI2SD’2020). AI2SD 2020. Advances in Intelligent Systems and Computing, vol 1417. Springer, Cham. https://doi.org/10.1007/978-3-030-90633-7_28
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DOI: https://doi.org/10.1007/978-3-030-90633-7_28
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