S., A., R. A., and N. D. “Corrosion of Steel Reinforcements in Fly Ash- and Kaolin-Based Geopolymer Concrete Immersed in Distilled Water and ASTM Seawater”. Civil Engineering Dimension, vol. 15, no. 2, Oct. 2013, pp. 89-95, doi:10.9744/ced.15.2.89-95.