Khaleel Midhin, M.A. and Wong, L.S. 2024. Investigating Mechanical Properties of Metakaolin-Based Geopolymer Concrete Optimized with Wastepaper Ash and Plastic Granules. Civil Engineering Journal. 10, (Dec. 2024), 209–234. DOI:https://doi.org/10.28991/CEJ-SP2024-010-011.