Oseke, I. F., and F. P. Dangiwa. “OPTIMAL CEMENT REPLACEMENT LEVELS IN CONCRETE USING GROUND GRANULATED BLAST FURNACE-SLAG FOR WORKABILITY AND STRENGTH DEVELOPMENT.”. Open Journal of Engineering Science (ISSN: 2734-2115), vol. 6, no. 1, Apr. 2025, pp. 1-14, doi:10.52417/ojes.v6i1.786.