Role of carbon dioxide on the corrosion of carbon steel reinforcing bar in simulating concrete electrolyte

Other Title(s)

دور ثاني أكسيد الكربون في تآكل قضبان تسليح الصلب الكربوني في محلول شبيه الخرسانة

Joint Authors

al-Samirrai, Abd al-Karim Muhammad Ali
Khudayr, Nur Ali

Source

Baghdad Science Journal

Issue

Vol. 17, Issue 1 (31 Mar. 2020), pp.93-98, 6 p.

Publisher

University of Baghdad College of Science for Women

Publication Date

2020-03-31

Country of Publication

Iraq

No. of Pages

6

Main Subjects

Civil Engineering

Topics

Abstract EN

The main factors that make it possible to get the corrosion of reinforcing steel in concrete are chloride ions and the absorption of carbon dioxide from the environment, and each of them works with a mechanism which destroys the stable immunity of rebar in the concrete.

In this work the effect of carbon dioxide content in the artificial concrete solution on the corrosion behavior of carbon steel reinforcing bar (CSRB) was studied, potentiostatically using CO2 stream gas at 6 level of concentrations; 0.03 to 2.0 weight percent, and the effect of rising electrolyte temperature was also followed in the range 20 to 50ᴼ C.

Tafel plots and cyclic polarization procedures were obeyed to investigate the corrosion parameters and pitting susceptibility respectively.

The change in the microstructure and morphology of the CSRB after polarization in the simulate concrete solution was studied using optical and atomic force microscopes.

The results show that the corrosion rate of the CSRB in artificial concrete greatly increases with the existence of CO2 gas and highly depends on its concentration in the range 0.03 to 2.0% .No sign for pitting corrosion is recorded at all CO2 concentrations and the general corrosion is the main problem in the conditions under consideration.

American Psychological Association (APA)

Khudayr, Nur Ali& al-Samirrai, Abd al-Karim Muhammad Ali. 2020. Role of carbon dioxide on the corrosion of carbon steel reinforcing bar in simulating concrete electrolyte. Baghdad Science Journal،Vol. 17, no. 1, pp.93-98.
https://search.emarefa.net/detail/BIM-935379

Modern Language Association (MLA)

Khudayr, Nur Ali& al-Samirrai, Abd al-Karim Muhammad Ali. Role of carbon dioxide on the corrosion of carbon steel reinforcing bar in simulating concrete electrolyte. Baghdad Science Journal Vol. 17, no. 1 (2020), pp.93-98.
https://search.emarefa.net/detail/BIM-935379

American Medical Association (AMA)

Khudayr, Nur Ali& al-Samirrai, Abd al-Karim Muhammad Ali. Role of carbon dioxide on the corrosion of carbon steel reinforcing bar in simulating concrete electrolyte. Baghdad Science Journal. 2020. Vol. 17, no. 1, pp.93-98.
https://search.emarefa.net/detail/BIM-935379

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 97-98

Record ID

BIM-935379