Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2006.07c
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- Pages.1416-1417
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- 2006
Effect on the corrosion of steel by unburnt carbon in fly ash cement mortar
미연탄소분이 플라이 애시 시멘트 모르타르내 철근의 부식에 미치는 영향
- Ha, Tae-Hyun (Korea Electrotechnology Research Institute) ;
- Bae, Jeong-Hyo (Korea Electrotechnology Research Institute) ;
- Lee, Hyun-Goo (Korea Electrotechnology Research Institute) ;
- Kim, Dae-Kyeong (Korea Electrotechnology Research Institute) ;
- Ha, Yoon-Cheol (Korea Electrotechnology Research Institute)
- Published : 2006.07.12
Abstract
The increase of carbon contents in fly ashes accelerate the corrosion of steel embedded in ordinary portland cement mortar. Cement losses its identity of colour, when the % of carbon is increased. More than 60[%] area was rusted, when carbon content is increased beyond 8[%] for the exposure period of one year. Comparable corrosion rate with OPC was obtained up to 6[%] carbon level only. The tolerable limit of replacement for various admixed carbon system under aggressive alternate wetting and drying condition with 3[%] NaCl was found to be 6 to 8[%].
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