A Study on Repression Effect of Polymer Cement Mortar Containing Lithium Nitrite for Salt Attack and Carbonation on Concrete

Abstract

The lithium nitrite-containing mortar surface coating method was exposed along the coast of Okinawa for 27 years. The surface coating method suppressed the progress of carbonation of concrete; it was also inhibited penetration of concrete airborne salt. In addition, the added nitrite ion was retained.Using the diffusion equation proposed by the authors, we verified nitrite and chloride ions and carried out a 100-year simulation.The molar ratio of the amount of nitrite ion to the amount of chloride ion was the molar ratio having the effect of suppressing the corrosion of the reinforcing bar.