Astuti, Pinta, et al. “Early Age Electrochemical Behavior and Initial Effectiveness of Waste-Derived Al–Zn Hybrid Sacrificial Anodes on Steel Bar Corrosion Control in Geopolymer Concrete ”. SINERGI, vol. 30, no. 3, Sept. 2026, pp. 915-26, doi:10.22441/sinergi.2026.3.018.