Okeniyi, Joshua Olusegun and Omotosho, O. A. and Ajayi, O. O. and Loto, C. A. (2014) Effect of potassium-chromate and sodium-nitrite on concrete steel-rebar degradation in sulphate and saline media. Construction and Building Materials, 50. pp. 448-456.
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Abstract
In this paper, effect of potassium-chromate (K2CrO4) and sodium-nitrite (NaNO2) on concrete steel-rebar degradation in sulphuric-acid and in sodium-chloride media were studied. Electrochemical monitoring of open circuit potential and compressive strength effect of the different concentrations of these admixtures in steel-reinforced concretes immersed in the acidic/marine-simulating environments were analysed for detailing admixture performance. Results subjected to ASTM C876 interpretations showed that concrete admixed with 0.145 M potassium-chromate exhibited optimum inhibition effectiveness with good compressive strength improvement in the acidic medium. In the saline medium, the concrete admixed with 0.679 M sodium-nitrite exhibited optimal inhibition performance, but with reduction in concrete compressive strength.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Concrete steel-rebar Potassium-chromate and sodium-nitrite inhibitors Microbial/marine-simulating environments Normal and Weibull distributions Kolmogorov–Smirnov statistics Compressive strength of concrete |
| Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Mrs Hannah Akinwumi |
| Date Deposited: | 14 Nov 2017 11:21 |
| Last Modified: | 14 Nov 2017 11:21 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/9644 |
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