GEOPOLYMER PAVEMENT BLOCK MADE-UP OF FLY ASH AND PLASTIC WASTE
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Fly ash is generated in large amounts particularly from industrial processes, while plastics are generated in increasingly large quantities with growing population. Disposal of waste materials including waste plastic material (HDPE) has become a serious environmental problem. The main aim of this project is to utilize both plastics and fly ash in the manufacturing of geopolymer pavement blocks. In this study, M30 grade concrete is used, with fly ash replacing cement at 50% and 80% proportions, and plastic waste partially replacing sand by 10% of its volume. Alkaline activators, namely sodium hydroxide (NaOH) and sodium silicate (Na₂SiO₃) at a ratio of 1.0 by mass with sodium hydroxide solution at 10 M concentration, are used to activate the fly ash. A water-to-geopolymer binder ratio of 0.40 and an alkaline solution-to-fly ash ratio of 0.35 were fixed based on workability and cube compressive strength requirements. Cubes of 150 mm side were cast and tested for compressive strength at 7 days, 14 days, and 28 days after curing. The geopolymer pavement block with 10% plastic waste achieved a compressive strength of 30 N/mm² at 14 days.
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U.Nagargoje, S., shinde, D. .., J.Thorat, P. & N.Kawde, P. (2026). Geopolymer Pavement Block Made-up of Fly ASH and Plastic Waste. International Journal of Science, Strategic Management and Technology, 02(04). https://doi.org/10.55041/ijsmt.v2i4.277
U.Nagargoje, Sagar, et al.. "Geopolymer Pavement Block Made-up of Fly ASH and Plastic Waste." International Journal of Science, Strategic Management and Technology, vol. 02, no. 04, 2026, pp. . doi:https://doi.org/10.55041/ijsmt.v2i4.277.
U.Nagargoje, Sagar,Darshan shinde,Prathamesh J.Thorat, and Pranav. N.Kawde. "Geopolymer Pavement Block Made-up of Fly ASH and Plastic Waste." International Journal of Science, Strategic Management and Technology 02, no. 04 (2026). https://doi.org/https://doi.org/10.55041/ijsmt.v2i4.277.
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