Evaluation and choice of suitable measures of protection
Chemical attack on concrete
Concrete is exposed to external chemical attack in various areas of application. This can seriously impair the durability and performance of a structure. The reactive component of the concrete to chemical attacks is essentially the cement paste. Depending on the type of the aggressive substances, different damage processes result. While acid has a solvent effect, the sulfates penetrating the concrete produce with constituents of the cement paste secondary sulfate phases, e.g. as ettringite, gypsum or thaumasite, that can trigger expansive/destructive processes. Exchange reactions in the cement...
