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고온수열 콘크리트의 염화물이온 확산계수 측정 및 수명예측
홍영태,고은혜,박재홍,오상균 대한건축학회지회연합회 2007 대한건축학회지회연합회 학술발표대회논문집 Vol.2007 No.1
The purpose of this study is to evaluate the Chloride ion migration coefficient of High-heated Concrete by NT BUILD 492 method. To evaluate performance of surface 5cm incoming Chloride Ion, 2D-numerical analysis model (FEM) was developed. As results of this study was obtained as follows; The Chloride ion migration coefficient of High-heated Concrete were increased by heated temperature. In conclusion, the Chloride ion migration coefficient were affected by distribution of porosity and pore size.
홍영태,조은영,박재홍,오상균 대한건축학회지회연합회 2006 대한건축학회지회연합회 학술발표대회논문집 Vol.2 No.1
concrete as recyclable cement puts to practical use constructing basic data for design of mix proportion used recyclable cement and solves strength fall problem using micron separator, and does general recyclable cement high quality. As a result of X-ray diffraction(XRD) of rater HR-C than NR-C is aware that it come out the micron-separating to decrease the SiO2 peak below 50%. And a construction field which apply for compressive strength's 24~28MPa HR-C in order to realize NR-C of 44% and 51%. Recycle concrete capacity through improved recycle cement of manufacturing technique by micron-separating's new distribution more better improvement. Therefore, in this study, it need to more various study a recycle cement of high quality for reasonable and utility recycling than disposal concrete.
정밀분급방법을 이용한 폐콘크리트 미분말의 고품질재생시멘트 개발
오상균,홍영태 대한건축학회 2007 大韓建築學會論文集 : 構造系 Vol.23 No.9
The purpose of this study is the concrete defect happen from aggregate minute's particle mixing in process that make waste concrete as recyclable cement puts to practical use constructing basic data for design of mix proportion used recyclable cement and solves strength fall problem using micron separator, and does general recyclable cement high quality.As a result of X-ray diffraction(XRD) of rater HR-C than NR-C is aware that it come out the micron-separating to decrease the SiO2 peak below 50%. And a construction field which apply for compressive strength's 24~28MPa HR-C in order to realize NR-C of 44% and 51%. Recycle concrete capacity through improved recycle cement of manufacturing technique by micron-separating's new distribution more better improvement. Therefore, in this study, it need to more various study a recycle cement of high quality for reasonable and utility recycling than disposal concrete.