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탄산화가 진행된 기존 RC구조물의 보수 공법 적용 후 탄산화 진행 예측

Title
탄산화가 진행된 기존 RC구조물의 보수 공법 적용 후 탄산화 진행 예측
Other Titles
Predicting Carbonation Progress of Carbonation Repaired RC Structures Repair
Author
이한승
Keywords
탄산화 예측; 보수공법; 콘크리트; FEM; FDM; carbonation prediction; repair; concrete; finite elements method; finite difference method
Issue Date
2017-06
Publisher
한국건축시공학회
Citation
한국건축시공학회지, v. 17, No. 3, Page. 235-243
Abstract
본 연구에서는 탄산화가 이미 진행된 콘크리트 구조물을대상으로 촉진 탄산화 실험을 실시하였다. 각 보수재별 탄산화 속도계수를 도출 후 보수후의 탄산화 진행 예측식을 이용하여 탄산화 진행 예측한다. 또한 신뢰성 확보를 위하여FDM과 FEM 해석을 통한 탄산화 깊이 예측을 비교했다. 그 결과 보수후 탄산화 예측식을 이용하면 탄산화 깊이를예측할 수 있으며, 초기 Ca(OH)2 농도 40%로 가정할 때해석 값과 실험값이 거의 유사함을 알 수 있었다. Carbonation of concrete is being occurred due to interaction of atmospheric carbon dioxide with hydroxides. Reinforce concrete (RC) structure is getting collapse or accident due to corrosion of embedded steel rebar. The maintenance of reinforced concrete structure recently has the attention of researchers regarding durability of structure and its importance day by day is increasing. In order to study the carbonation progress of pre-repaired concrete, present study was carried out to measure the carbonation velocity for different repair materials up to 100% of carbonation. The obtained results have predicted the carbonation progress of repair materials in service condition. These results have been verified by FEM and FDM analysis. As a result, the carbonation depth can be predicted by using the carbonation prediction formula after the repair, and the analytical and the experimental values are almost similar when the initial Ca(OH)2 concentration is assumed to be 40%.
URI
http://kiss.kstudy.com/thesis/thesis-view.asp?key=3525206http://repository.hanyang.ac.kr/handle/20.500.11754/103440
ISSN
1598-2033
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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