Description
This research investigates the bond behavior of magnesium potassium phosphate cement (MKPC) coated mild steel bars in conventional concrete, focusing on its relation to both epoxy coated and mild steel bar bond behavior related to the magnitude of variation. In traditional concrete a passive layer protects the mild reinforcing steel from corrosion until the concrete becomes carbonated and then mild steel will start to corrode with access to moisture and oxygen. To combat this, it is common to incorporate an additional layer of protection to the reinforcing steel, such as an epoxy coating or galvanizing the steel with zinc. A novel coating that has been developed to resist corrosion is magnesium potassium phosphate cement (MKPC). MKPC demonstrates potential as an anti-corrosion coating for new construction and repair due to its rapid hardening, early strength, and good bond qualities based upon prior work conducted at Missouri S&T [Zhang et al. (2023)] The aim of this paper is to investigate those bond qualities. Ultimately, the results aim to inform engineering practices and improve the understanding on the bond behavior of MKPC anti-corrosion coated mild steel bars, how it compares to mild steel and epoxy coated steel in conventional concrete for infrastructure development, thereby addressing a critical need in the field.
