Korozijski potencijal čelika ugrađenog u alkalno-aktiviranu zguru

Abstract

Alkali-Activated Materials (AAMs) are a group of free clinker binders that are based on aluminosilicate powder and an alkali activator. AAMs have shown high performance in many areas and have attracted great interest because of their lower environmental impact compared to ordinary Portland cement. The aim of this paper is to offer a first assessment on the safety of application of AAMs in marine environments, or where de-icing salts are used. The paper focuses on the alkali-activated ground-granulated blast furnace slag in combination with other by-products originating from Southeast Europe. The setup used to evaluate the corrosion behaviour consists of structural steel plates covered with a layer of mortar, and with tap water or a simulated seawater solution. The corrosion behaviour of structural steel plates was monitored by means of the Open Circuit Potential (OCP).