|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Total Corrosion Effects of Anthocleista djalonensis and Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> on Steel-Rebar in H<sub>2</sub>SO<sub>4</sub>: Sustainable Corrosion-Protection Prospects in Microbial/Industrial Environment
||Joshua Olusegun Okeniyi, Cleophas Akintoye Loto, Abimbola Patricia Popoola
|On-Site Speaker (Planned)
||Joshua Olusegun Okeniyi
This paper studies total-corrosion effects of Anthocleista djalonensis (green natural-plant) and Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> (well-known inhibitor, but environmentally-hazardous chemical) on steel-reinforcement in concrete immersed in 0.5 M H<sub>2</sub>SO<sub>4</sub>, simulating microbial/industrial environment. Equal-mass models of the plant leaf-extract and of Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> were employed as admixtures in steel-reinforced concrete samples immersed in the test-system, from which macrocell corrosion measurements were obtained and analysed as per ASTM G109-99a. Results showed that only the 3.33 g/L Anthocleista djalonensis, among the equal-mass models of leaf-extract and the chemical admixtures, was outperformed by the 3.33 g/L Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> in total corrosion reduction effects. In the study, 5.00 g/L Anthocleista djalonensis exhibited optimal effectiveness, η = 93.77%, on the total-corrosion effect of concrete steel-reinforcement. The many Anthocleista djalonensis admixtures that exhibited better inhibition than Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> admixtures indicates positive prospects of the plant as an eco-friendly and sustainable corrosion-protection alternative for the toxic chemical in microbial/industrial environment.
||Planned: A CD-only volume