Abstract:
Patch repairs of reinforced concrete structures deteriorated by chloride ion-induced corrosion are typically performed with proprietary modified Portland cement mortar polymer. To extend the service life of the localized repair, galvanic anodes are considerate as part of repair system. Two types of commercial galvanic anode were evaluated by accelerated test performed in sand saturate with simulated pore-water contaminate with chloride (NaCl 15 %). The potentials and the galvanic current flow were monitored. The results showed that both types were functional throughout 17 months service in the sand test, having retained an electrochemically active state satisfying the 100 mV polarization criterion. The service life estimation by average current flow showed high performance of both anodes.
Reference:
ARAUJO, Adriana de; RIBEIRO, José L. S., ROSAC, Thales Gomes; PANOSSIAN, Zehbour. Evaluation of galvanic anode for patch repair of concrete structures deteriorated by choride ion-induced corrosion. In: INTERNATIONAL CORROSION CONGRESS, 21., AND THE INTERNATIONAL CORROSION MEETING, 8., 2021, São Paulo. (on-line) Proceedings…
Log into BiblioInfo/IPT-DAIT to access the text in PDF. Log into BiblioInfo/IPT-DAIT to access the text in PDF:
https://escriba.ipt.br/pdf_restrito/177385.pdf
Patch repairs of reinforced concrete structures deteriorated by chloride ion-induced corrosion are typically performed with proprietary modified Portland cement mortar polymer. To extend the service life of the localized repair, galvanic anodes are considerate as part of repair system. Two types of commercial galvanic anode were evaluated by accelerated test performed in sand saturate with simulated pore-water contaminate with chloride (NaCl 15 %). The potentials and the galvanic current flow were monitored. The results showed that both types were functional throughout 17 months service in the sand test, having retained an electrochemically active state satisfying the 100 mV polarization criterion. The service life estimation by average current flow showed high performance of both anodes.
Reference:
ARAUJO, Adriana de; RIBEIRO, José L. S., ROSAC, Thales Gomes; PANOSSIAN, Zehbour. Evaluation of galvanic anode for patch repair of concrete structures deteriorated by choride ion-induced corrosion. In: INTERNATIONAL CORROSION CONGRESS, 21., AND THE INTERNATIONAL CORROSION MEETING, 8., 2021, São Paulo. (on-line) Proceedings…
Log into BiblioInfo/IPT-DAIT to access the text in PDF. Log into BiblioInfo/IPT-DAIT to access the text in PDF:
https://escriba.ipt.br/pdf_restrito/177385.pdf
