Extractos de plantas

posible solución sustentable de la corrosión de estructuras

Abstract

Certain agents present in the environment cause a reduction in the reinforced concrete service life. Corrosion of the rebar due to chlorides is frequent and involves high economic and resource costs to en sure the projected useful life, which compromises the construction sustainability. Inorganic corrosion inhibitors are one of the solutions, but they were recently banned as toxic. In this context, plant extracts inhibitors develop as a sustainable alternative. In this article, the response of the yerba mate aqueous extract added to steels exposed to an aggressive solution is analysed. In addition, its effect on the concrete compressive strength is studied. The results of this type of inhibitor are promising as areplacement for current technologies, despite aslight reduction in the value of compression re sistance.