Quantitative expression of an organic corrosion inhibitor (pci-2014) for repairing steel bars in concrete contaminated with chloride

Author(s): Zhiyong Liu, Zixiao Wang, Weibin Yang, Lei Yu
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Electrochemistry in Civil Engineering
Editor(s): Lisbeth M. Ottosen
ISBN: 978-2-35158-176-6
e-ISBN: 978-2-35158-177-3
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 84-90
Total Pages: 7
Language : English

Abstract: A numerical relation of a permeable organic corrosion inhibitor (marked PCI-2014) for repairing steel bars in concrete with different chloride content was studied. The corrosion current density (Icorr) of steel bar in chloride-contaminated concrete after absorbing PCI-2014 was measured by linear polarization resistance (LPR) tests. The inhibitor concentration at steel and concrete interface after painting PCI-2014 was calculated by a proposed MCI transport model. Then the correlation equation among Icorr of steel bar, MCI concentration at the surface of steel and the free chloride content in concrete was established by statistical analysis. So the minimum MCI requirements for repairing the corroded steel bars in concrete can be calculated. The expression can be used to guide the application of PCI-2014 inhibitor for durability improvement of concrete structure.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00