Zulkarnain, F. ., S. . Wibowo, and M. Z. . Sulieman. “Evaluating the Elastic Modulus of Geopolymer Concrete: The Impact of Fly Ash As a Cement Substitute Using a No-Soaking Method for Sustainable Construction”. Journal of Advanced Research Design, vol. 126, no. 1, Mar. 2025, pp. 53-68, doi:10.37934/ard.126.1.5368.