A comparative analysis of corrosion assessment techniques for steel in reinforced concrete exposed to brine water environments-Reference-Cited by-同舟云学术

A comparative analysis of corrosion assessment techniques for steel in reinforced concrete exposed to brine water environments

Published:2024-04-26 Issue:7 Volume:66 Page:956-975
ISSN:0025-5300
Container-title:Materials Testing
language:en
Short-container-title:

Author:

Wongpanya Pornwasa¹,Phangking Dapanee¹,Phueakphum Decho²

Affiliation:

1. School of Metallurgical Engineering , Institute of Engineering, 506977 Suranaree University of Technology , 111 University Avenue, Muang , Nakhon Ratchasima , 30000 , Thailand

2. 506977 School of Geotechnology, Institute of Engineering, Suranaree University of Technology , 111 University Avenue, Muang, Nakhon Ratchasima , 30000, Thailand

Abstract

Abstract Corrosion assessment of steel-reinforced concrete specimens submerged in synthetic brine water with various chloride concentrations for 1–16 weeks was performed. Mass loss measurements combined with electrochemical techniques – half-cell potential, linear polarization (LP), and electrochemical impedance spectroscopy (EIS) – were employed. The results obtained from all corrosion assessments – on-site testing (half-cell potential measurements), laboratory scale (LP and EIS measurements), and destructive testing (mass loss or immersion measurements) – exhibited remarkable consistency, complementarity, and mutual supportiveness. Corrosion rate (CR) values from mass loss were close to those obtained from LP and EIS. The corrosion resistance decreased with increasing chloride concentration and immersion time, as indicated by the highest CR, Ca2+, and Fe2+ concentrations, and the lowest half-cell potential and polarization resistance. X-ray photoelectron spectroscopy investigation on the corroded steel surface revealed Fe(III) oxides and hydroxides and Fe(III) (FeCl3), corresponding to the reduction in polarization resistance in the LP and EIS results.

Funder

(i) Suranaree University of Technology (SUT), (ii) Thailand Science Research and Innovation (TSRI), and (iii) National Science, Research, and Innovation Fund

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/mt-2024-0044/pdf

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