CORROSION STUDY IN REINFORCED CONCRETE MADE WITH MINE WASTE AS MINERAL ADDITIVE

This work studies an alternative to reuse mine waste materials in reinforced concrete. It pretends to determinate experimental parameters of corrosion resistance in different systems of concrete assesed, (with 5%, 10% y 15% recycled material instead of cement Portland) in comparison to conventional reinforced concrete. Specimens of concrete were exposed in a corrosive environment using a salt spray chamber. At the moment of assesing of the steel-concrete system in relation to exhibition time were used techniques half-cell potential and electrochemical impedance. It is worth mentioning that the halfcell potential indicates specimens with mine waste material does not suffer a significante change in comparison to conventional concrete system in relation a monitoring time. The results obtained by Electrochemical Impedance Spectroscopy technique show systems with mine waste material presents a slight diminish in the values of corrosion resistance and the total impedances does not show a significant change between to conventional concrete and a specimen with 10% of mine waste material.