Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

Analytic Research for Estimation of the Carbonation Depth considering the Concentration and the Deviation of Indoor Carbon Dioxide

실내 이산화탄소 농도 측정 및 편차에 따른 콘크리트 탄산화 깊이 예측에 관한 해석적 연구

  • 박동천 (한국해양대학교 해양공간건축학과) ;
  • 송훈 (한국세라믹기술원) ;
  • 이동운 (동서대학교 건축토목공학부)
  • Received : 2011.12.12
  • Published : 2012.04.25
⟨ Previous Next ⟩

Abstract

Carbon dioxide in atmosphere causes concrete carbonation which is the phenomenon, that is, the pH of concrete goes down from 12-13 to 8.85-10. Even though the carbon dioxide concentration of indoor is higher than that of outdoor, the micro measurement has not carried out. The concentration test was conducted three times in two rooms in a residential area, reading room in library, and lecture room. With all the deviation for each unit, the measured average value was 463.1~1425.3(ppm) which is more than three times than that of outdoor at the most. Without surface finishings in FEM calculation, the depth of carbonation is up to 4(cm). At the same time, the FEM calculation considering surface finishings. Any carbonation did not appeared because of the assumption, that is, surface finishings did not deteriorate.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

References

  1. Yves F. Houst. Folker H. Wittmann, Depth profiles of carb onates formed during natural carbonation, Cement and Conc rete Research, 2002;32:1923-30. https://doi.org/10.1016/S0008-8846(02)00908-0
  2. 이종득, 콘크리트 구조물 열화 내구성 진단, 도서출판 일광, 2007;130-3
  3. 社団法人日本コンクリート工学協會, 複合劣化コンクリート構造物野評価と維持管理計畵研究委員會, 2001. 5
  4. DongUk Choi. Suggestions for Sustainable Development of Concrete Industry, Magazine of the Korea Concrete Institute. 2011;23(2):12-4.
  5. 社団法人日本コンクリート工学協會, コンクリート構造物の構造耐久設計境界問題研究委員會報告書, 1998.7
  6. 社団法人日本コンクリート工学協會, コンクリート構造物の長期性能照査支援モデルに關するシンポジウム, 2004.10
  7. DC. Park, Carbonation of concrete in relation to CO2 perme ability and degradation of coationgs, Construction and Build ing Materials, 2008;22:2260-8 https://doi.org/10.1016/j.conbuildmat.2007.07.032
  8. 박동천, 수산화칼슘의 반응과 확산에 주목한 장기 중성화 예측에 관한 해석적 연구, 대한건축학회논문집 구조계, 23권, 8 호, pp.99-106, 2007.8
  9. 馬場明生. 千歩修, 各種の表面層をもつコンクリートの中性化深 さ推定方法に關する一考察, コンクリート年次論文報告集. 9(1). pp. 333-338. 1987
  10. Osamu SENBU. Akio BABA. Yasuyuki MATUSHIMA, Effect of Surface Finishings on Water Transmission Properti es and Carbonation of Concrete, Japan Society for Finishings Technology, 1994;2(1):17-22