Neutralization evolution of concrete under acid rain and carbonation erosion: a review

Unveiling the anti-corrosion properties of Zn-eggshell particle composite coatings on mild steel in seawater-simulated solution using starch as a modifier

“…Moreover, acidic environments, which often intensify corrosion processes, can be countered by the alkaline properties of CaCO 3 . 27 The neutralization process described in eqn (2) may take place when the coating is exposed to acidic conditions:CaCO 3 + 2HCl → CaCl 2 + CO 2 + H 2 O…”

“…This neutralization can stop corrosion to the underlying metal by balancing the pH at the metal-coating contact. 27 To help create a more adherent and compact layer, eggshell particles are added to the mixture, increasing the layer's mechanical integrity and resistance to degradation. Aigbodion and Akinlabi 28 found that the zinc-eggshell particles composite coating on mild steel demonstrated better corrosion resistance and thermal stability than traditional zinc coatings.…”