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Electrochemical extraction of chlorides from reinforced concrete using a conductive cement paste as the anode
The results of this research show the viability of using a conductive cement paste (CCP) anode for the electrochemical extraction of chlorides (EEC) from reinforced concrete with an efficiency similar to that obtained with a classic Ti-RuO2 anode. The obtained efficiencies are within the typical range of values of overall efficiencies found for such treatments. When a 20 mm thick CCP anode is used for an EEC treatment, a high portion of the Cl(-) initially present in the concrete cover zone (up to 61% for a 5 x 106 C/m2 treatment), is accumulated at the anode. These Cl(-) ions could, in turn, re-diffuse into the concrete cover, and eventually could reactivate the steel corrosion. The thickness of the conductive cement paste anode has a great influence on the capacity of the anode to retain an important part of the extracted chlorides after finishing the electrochemical treatments.
Electrochemical extraction of chlorides from reinforced concrete using a conductive cement paste as the anode
The results of this research show the viability of using a conductive cement paste (CCP) anode for the electrochemical extraction of chlorides (EEC) from reinforced concrete with an efficiency similar to that obtained with a classic Ti-RuO2 anode. The obtained efficiencies are within the typical range of values of overall efficiencies found for such treatments. When a 20 mm thick CCP anode is used for an EEC treatment, a high portion of the Cl(-) initially present in the concrete cover zone (up to 61% for a 5 x 106 C/m2 treatment), is accumulated at the anode. These Cl(-) ions could, in turn, re-diffuse into the concrete cover, and eventually could reactivate the steel corrosion. The thickness of the conductive cement paste anode has a great influence on the capacity of the anode to retain an important part of the extracted chlorides after finishing the electrochemical treatments.
Electrochemical extraction of chlorides from reinforced concrete using a conductive cement paste as the anode
Elektrochemische Extraktion von Chloriden aus Stahlbeton mit einer leitfähigen Zementpaste als Anode
Perez, A. (Autor:in) / Climent, M.A. (Autor:in) / Garces, P. (Autor:in)
Corrosion Science ; 52 ; 1576-1581
2010
6 Seiten, 4 Bilder, 2 Tabellen, 29 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2010
| British Library Online Contents | 2013
| DOAJ | 2006
The electrochemical removal of chlorides from reinforced concrete
| British Library Online Contents | 1993