Plant extracts as corrosión inhibitors: effect of lyophilisation

NATALIA DELBIANCO; NESTOR ORTEGA; CARLA PRIANO; MÓNICA PEREZ

Formato virtual

Conferencia; 18th LACCEI International Multi-Conference for Engineering, Education, and Technology - Virtual Edition; 2020

LACCEI: Latin American and Caribbean Consortium of Engineering Institutions

Natural plant extracts are being studied as corrosion inhibitors. As a drawback, these products are susceptible to deterioration, especially during storage. In this research, the effect of lyophilization of the aqueous extracts of Oregano and Yerba Mate was analyzed with a comparison between the extract in liquid andlyophilised form. Setting-times, flexural and compression strength of cement mortars were tested, and the extract?s inhibitory activity was examined using XRD technique. As a conclusion, it was found that freeze-dried extract form allowed an easier conservation and it showed having a minor effect in setting times.