Although it is well known that any material degrades faster when exposed to an aggressive environment as well as that "aggressive" cannot be univocally defined as depending also on the chemical-physical characteristics of material, few researches on the identification of the most significant parameters influencing the corrosion of metallic object are available.A series of ancient coins, coming ...

New self-healing agents that can chemically bind seawater ions invading cracked cementitious materials were proposed. The potential of and binding investigated by thermodynamic modeling. It was found CaO-NaAlO2 CaO-metakaolin have Cl−, SO42− Mg2+ bound reacting with sea water to form Friedel's salt, Kuzel's ettringite hydrotalcite. removal Cl− from firstly increased then decreased the increase ...

Although properly made concrete is inherently a durable material, there are many physical and chemical forces in the environment which can contribute to its deterioration. This paper deals with two aspects of concrete durability in chemical aggressive environment: degradation effect of particular aggressive exposure and role of particular mineral additives. Results of the study of leaching and ...