Maulana, F., & Setiawan, A. A. (2025). The Effect of Waste Flex Banner Fiber on Mechanical Properties of Geopolymer Concrete. Jurnal Komposit: Jurnal Ilmu-Ilmu Teknik Sipil, 9(2), 429–436. https://doi.org/10.32832/komposit.v9i2.19259