Purba, Luki Hariando, et al. “Experimental and Numerical Study on the Comparative Flexural Behavior of Geopolymer Concrete Beams Based on Metakaolin and Fly Ash”. Inersia : Jurnal Teknik Sipil Dan Arsitektur, vol. 21, no. 1, June 2025, pp. 46-56, doi:10.21831/inersia.v21i1.78027.