Chloride-induced corrosion of steel embedded in alkali-activated materials: state of the art

Abstract

Alkali-activated materials are a group of alternative binders based on aluminosilicate precursor and an alkali activator. Since precursors are mostly waste materials and by-products, AAMs are consideredto be a valid and more environmental-friendly alternative to Portland cement. Although the AAMs show good performance, there are not enough studies in the literature about their long-term durability performance related to chloride ingress and embedded steel corrosion. The issue of this paper is to highlight the main difference between OPC and the different types of AAMs, and to give a short introduction about the state of art of this embedded steel corrosion.

Design of slag cement, activated by Na (K) salts of strong acids, for concrete reinforced with steel fittings

“…In this regard, the result reported in [51] is promising; it shows that the amount of bound chlorine (P cb ) depends ce [60] and is reasonable to counteract the aggressive effects of the anionic residue of strong acids on steel reinforcement in concrete. It could be assumed that the advantage in the formation of these phases would depend both on the composition and content of SSA and the composition (alkalinity) of the cement matrix, the morphology of hydrate new formations, and the transporting properties of the structure of concrete in general.…”