Electrochemical Performance of Steel Embedded in CSA Concrete and Its Interfacial Microstructure
Joint Authors
Song, Meimei
Wu, Ke
Dou, Yihua
Li, Qiu
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-06
Country of Publication
Egypt
No. of Pages
8
Abstract EN
Calcium sulfoaluminate cement (CSA) is a low-carbon cementitious material that significantly reduces alkalinity and produces calcium hydroxide-free (CH-free) matrix environment in comparison to ordinary Portland cement (OPC).
It might be, however, less efficient towards the passivation of steel in concrete and further investigation before widespread adoption is required.
In this project, scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX) on polished samples was employed to provide the interfacial characterization of steel reinforced CSA concrete and study the relationship of interfacial quality and corrosion resistance of the embedded steel.
The galvanostatic polarization behavior indicates that the steel embedded in CSA concrete remains passive for 28 days in absence of Cl− ions and carbonation.
Microstructure analysis has shown that there is an Al-enriched layer at interfacial zone in CSA concrete with the main hydration product of AH3, which is also alkaline and is expected to improve the steel passivity.
Furthermore, the interfacial zone has markedly reduced porosity compared to the bulk matrix, which leads to reduced possibility of current flow between anode and cathode and therefore improves the corrosion resistance of the embedded reinforcement.
American Psychological Association (APA)
Song, Meimei& Li, Qiu& Wu, Ke& Dou, Yihua. 2020. Electrochemical Performance of Steel Embedded in CSA Concrete and Its Interfacial Microstructure. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1128445
Modern Language Association (MLA)
Song, Meimei…[et al.]. Electrochemical Performance of Steel Embedded in CSA Concrete and Its Interfacial Microstructure. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1128445
American Medical Association (AMA)
Song, Meimei& Li, Qiu& Wu, Ke& Dou, Yihua. Electrochemical Performance of Steel Embedded in CSA Concrete and Its Interfacial Microstructure. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1128445
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128445