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Predicting degradation of the anode-concrete interface for impressed current cathodic protection in concrete

Journal article
Authors E. Q. Zhang
Zareen Abbas
L. P. Tang
Published in Construction and Building Materials
Volume 185
Pages 57-68
ISSN 0950-0618
Publication year 2018
Published at Department of Chemistry and Molecular Biology
Pages 57-68
Language en
Keywords Cathodic protection, Degradation, Anode-concrete interface, Calcium leaching, Accelerated method, calcium leaching behavior, cement pastes, water, prevention, hydroxide, model, Construction & Building Technology, Engineering, Materials Science
Subject categories Biomaterials Science, Materials Chemistry


Impressed current cathodic protection and prevention techniques are efficient methods to stop or prevent corrosion in steel reinforced concrete structures. The inevitable side effect of the current exchange is acidification at the anode-concrete interface. Accelerated test methods can be used to investigate the long-term performance of the system. However, a linear relation will not hold between the accelerated and normal conditions because of the influence of the current density. This paper presents results of an accelerated test. A power-relation conversion model is proposed and an acceleration factor is introduced. (C) 2018 Elsevier Ltd. All rights reserved.

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