Protection against Reinforcement Corrosion Using Phosphoric Acid-Based Rust Converter

Alhozaimy , A and Hussain, R R and Al-Negheimish, Abdulaziz and Singh, J K (2018) Protection against Reinforcement Corrosion Using Phosphoric Acid-Based Rust Converter. Aci Materials Journal, 115(6) (IF-1.453). pp. 935-944.

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Abstract

The protective properties of a newly developed phosphoric acid-based rust converter are investigated for reinforcement corrosion under chloride-contaminated concrete environment. The electrochemical evaluation of specimens after 6 years (2 years of wet-dry exposure in 3.5% sodium chloride solution and 4 years in dry laboratory environment) demonstrated that treating the reinforcing bar with the newly developed product significantly reduced the corrosion rate compared to the control reinforcing bar. Based on the results of Raman spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy, a new mechanism is described for the transformation of unstable rust phases into stable phases. It is observed that iron phosphate remains entrapped with corrosion products formed on the surface of the treated steel reinforcing bar, even after 6 years of exposure.

Item Type:Article
Official URL/DOI:https://doi.org/10.14359/51706943
Uncontrolled Keywords:chloride; corrosion; phosphoric acid; reinforcement; rust
Divisions:Material Science and Technology
ID Code:7898
Deposited By:Sahu A K
Deposited On:18 Sep 2019 18:03
Last Modified:18 Sep 2019 18:03
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