Comparative Study on Corrosion Protection of Reinforcing Steel by Using Amino Alcohol and Lithium Nitrite Inhibitors
- Title
- Comparative Study on Corrosion Protection of Reinforcing Steel by Using Amino Alcohol and Lithium Nitrite Inhibitors
- Author
- 이한승
- Keywords
- reinforced concrete; reinforcing steel corrosion; amino alcohol inhibitor; electrochemical evaluation; NATURAL INORGANIC MINERALS; 3-PERCENT NACL SOLUTIONS; CONCRETE STRUCTURES; CARBON-STEEL; CHLORIDE ATTACK; ENVIRONMENTS; PERFORMANCE
- Issue Date
- 2015-01
- Publisher
- MDPI AG
- Citation
- MATERIALS, v. 8, No. 1, Page. 251-269
- Abstract
- In this study, the ability of lithium nitrite and amino alcohol inhibitors to provide corrosion protection to reinforcing steel was investigated. Two types of specimens-reinforcing steel and a reinforced concrete prism that were exposed to chloride ion levels resembling the chloride attack environment-were prepared. An autoclave accelerated corrosion test was then conducted. The variables tested included the chloride-ion concentration and molar ratios of anti-corrosion ingredients in a CaOH2-saturated aqueous solution that simulated a cement-pore solution. A concentration of 25% was used for the lithium nitrite inhibitor LiNO2, and an 80% solution of dimethyl ethanolamine ((CH3)(2)NCH2CH2OH, hereinafter DMEA) was used for the amino alcohol inhibitor. The test results indicated that the lithium nitrite inhibitor displayed anti-corrosion properties at a molar ratio of inhibitor of >= 0.6; the amino alcohol inhibitor also displayed anti-corrosion properties at molar ratios of inhibitor greater than approximately 0.3.
- URI
- http://www.mdpi.com/1996-1944/8/1/251/htmhttp://hdl.handle.net/20.500.11754/35421
- ISSN
- 1996-1944
- DOI
- 10.3390/ma8010251
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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