http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
염화물 이온 및 이산화탄소의 복합작용에 의한 콘크리트의 내구성상 평가에 관한 실험적 연구
김영봉 ( Kim Young-bong ),조봉석 ( Cho Bong-suk ),김영덕 ( Kim Young-duck ),김규용 ( Kim Gyu-yong ),김무한 ( Kim Moo-han ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.2
Recently, corrosion of reinforcement of reinforced concrete structures and carbonation is raised problem of durability because of exhaustion of river sand and rapid increase of sea sand and also, concrete structure of sea environment is attacked to combined deterioration according to penetration of chloride ion and carbonation. Therefore, in this study, mixing design was proportioned with the various water-binder ratio 0.55 binder compositions corresponding to Type I cement without any supplementary materials (OPC), Type II cement with 50% blast-furnace slag replacement (BFS50), Type Ⅲ cement with 15% fly ash replacement (FA15). and ternary cement with TypeⅣ cement. 15% fly ash. and 35% slag replacement (BFS35%+FA15%). And this study is carried out to compare individual deterioration test with combined deterioration test and to investigate the effect of the permeation of deterioration factors such as CO2 and chloride ion under the combined deterioration environments. Test result showed that mixing design with BFS50% and BFS35% + FA15% exhibited higher durability than that made with OPC only.
염해 및 중성화의 복합열화작용에 따른 콘크리트의 내구특성 평가에 관한 실험적 연구
김영봉(Kim Young-Bong),조봉석(Cho Bong-Suk),김영덕(Kim Young-Duck),나철성(Na Chul-Sung),김규용(Kim Gyu-Yong),김무한(Kim Moo-Han) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Durability evaluations to assess the deterioration of reinforced concrete structures in the present have been considered only individual deterioration factors such as salt damage and carbonation. Also, indoor accelerated experiments have not been able to realize the combined deterioration factors that actually affect real concrete structures. Therefore, in this study, mixing design was proportioned with the various water-binder ratio 0.55 binder compositions corresponding to Type I cement without any supplementary materials(OPC), Type Ⅱ cement with 50% blast-furnace slag replacement (BFS50), TypeⅢ cement with 15% fly ash replacement (FA15), and ternary cement with TypeⅣ cement, 15% fly ash, and 35% slag replacement (BFS35+FA15). And this study is carried out to compare individual deterioration test with combined deterioration test and to investigate the effect of the permeation of deterioration factors such as CO₂ and chloride ion under the combined deterioration environments. After setting up various deterioration factors and levels such as carbonation, salt damage, and the repetition of drying-wetting, items such as carbonation depth, chloride ion penetration depth were evaluated under the combined deterioration environments. The results showed that carbonation depth, chloride ion penetration depth were increased according to the elapsed of ages. Also mixing design with BFS50% and BFS35%+FA15% exhibited higher durability factor than that made with OPC only.
경화콘크리트의 염화물 분석시험 정밀도 향상을 위한 실험적 연구
김영봉(Kim Young-Bong),김영선(Kim Young-Sun),이의배(Lee Eui-Bae),남정수(Nam Jeong-Soo),김규용(Kim Gyu-Yong),김무한(Kim Moo-Han) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
Worldwide, Certification systems for standard of material and quality of product exist very variously. Korean industrial Standard (KS) is most representatively certification systems in Korea. But laboratory of Korea uses often ASTM, RILEM and JIS and these standards do not get into unionization. So, granted that experiment is same, result still can different. Specially, the difference occurs of concrete chloride test. Therefore, this research measured chloride amount of hardened concrete using identical material and wished to improve accuracy of chloride estimation as that comparison evaluate to each examination.
탄산화 및 염해의 복합작용에 의한 콘크리트의 결합재 구성에 따른 내구성능 평가에 관한 실험적 연구
김규용(Kim Gyu-Yong),김영봉(Kim Young-Bong),김영선(Kim Young-Sun),조봉석(Cho Bong-Suk),김무한(Kim Moo-Han) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.8
Durability evaluations to assess the deterioration of reinforced concrete structures in the present have been considered only individual deterioration factors such as salt damage and carbonation. Also, indoor accelerated experiments have not been able to realize the combined deterioration factors that actually affect real concrete structures. Therefore, in this study, mixing design was proportioned with the various water-binder ratio 0.55 binder compositions corresponding to TypeⅠ cement without any supplementary materials (OPC), TypeⅡ cement with 50% blast-furnace slag replacement (BFS50), TypeⅢ cement with 15% fly ash replacement (FA15), and ternary cement with TypeⅣ cement, 15% fly ash, and 35% slag replacement (BFS35 / FA15). And this study is carried out to compare individual deterioration test with combined deterioration test and to investigate the effect of the permeation of deterioration factors such as CO2 and chloride ion under the combined deterioration environments. After setting up various deterioration factors and levels such as carbonation, salt damage, and the repetition of drying-wetting, items such as carbonation, chloride ion penetration were evaluated under the combined deterioration environments. The results showed that carbonation and chloride ion penetration depth were increased according to the combined deterioration environments.
복소함수계 Mζ,α(Z)=exp(-α ζ+z/ζ-z)를 이용한 개화하는 꽃의 애니매이션
김형석(Hyoung Seok Kim),김영봉(Young Bong Kim),김호경(Ho Kyung Kim),김황수(Hwang Soo Kim),김홍오(Hong Oh Kim),신성용(Sung Yong Shin) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.1
최근 α>0이고 │ζ│=1인 복소함수계 Mζ,α(z) = exp(-αζ+z/ζ-z)의 성질들이 알려졌다. 방정식 Mζ,α(z)-1=0을 풀기 위하여 Newton's Newton 방법을 적용할 때 그 근들에 대한 견인영역(basin of attraction)들은 자기 유사한 (self-similarity) 꽃모양 구조를 가진다. 그리고 α가 변함에 따라, 그 구조들 또한 변한다는 사실을 알 수 있다. 본 논문은 α가 0이 아닌 실수까지 확장하여 α의 변화에 따른 그 견인영역들의 꽃모양 구조의 변함을 이용하여 예술적인 관점의 꽃 개화를 표현하고자 한다.
김용진(Yong-Jin Kim),정창원(Chang-Won Jung),김영봉(Young-Bong Kim),권도훈(Do-Hoon Kwon) 대한전기학회 2009 전기학회논문지 P Vol.58 No.1
In this paper, a printed small Ultra-Wideband (UWB) antenna with directive radiation characteristics based on combination of electric-magnetic radiators is presented. The combinations of the electric and magnetic type antennas result in the directive radiation patterns for all observed UWB frequency band. Simple combination of dipole antenna and loop antenna is also presented to show that proper configuration of electric radiator and magnetic radiator can produces directive radiation characteristics. The target frequency is from 3.1 GHz to 10.6 GHz with size of 15 ㎜ × 31 ㎜. A proto-type of the combined antenna is simulated, fabricated and measured. Simulation and experimental results of input impedance and gain characteristics of the proposed antenna are presented. There are good agreements between the simulated and measured VSWR curves. Also, the results show the directive radiation characteristics with small antenna form factor over the target frequency range.
진공증착중합법에 의해 제조된 폴리이미드 박막의 플라즈마 처리에 의한 표면의 변화
김형권,이붕주,김종택,김영봉,이덕출,Kim, Hyeong-Gweon,Lee, Boong-Joo,Kim, Jong-Teak,Kim, Yong-Bong,Lee, Duck-Chool 한국전기전자재료학회 1998 전기전자재료학회논문지 Vol.11 No.5
In this study, we intended to investigate aging effect of polyimide prepared by VDPD(vapor deposition polymerized method). The prepared polymide was treated by the oxygen and argon gas plasma. And we evaluated the polyimide treated by plasma from contact angle, surface leakage current, FT-IR and SEM. We know that the structure of polyimide at surface are changed to amide structure by plasma treating. It seems that strong energy of plasma causes breaking the molecular chin of the polyimide. And surface roughness increases with plasma treating time increased and sequentially the wettability and leakage current increases.
플라이애시 및 고로슬래그 미분말을 사용한 고강도 콘크리트의 수화열 및 자기수축 특성분석에 관한 연구
구경모 ( Koo Kyung-mo ),김영봉 ( Kim Young-bong ),이의배 ( Lee Eui-bae ),김규용 ( Kim Gyu-yong ),김무한 ( Kim Moo-han ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
In this study, quantitative analysis on effect of hydration heat and autogenous shrinkage of concrete using BFS and FA was studied. Especially, it analyze section data statistically which hydration heat and autogenous shrinkage rise, and it appeared the correlation of hydration heat and autogenous shrinkage as well as quantitative coefficients of the main properties. As a result, the section which hydration heat and autogenous shrinkage of FA-30 and BFS-50 rise rapidly is delayed than OPC, but the properties of hydration heat and autogenous shrinkage in that section appeared similar shape in each mixing. And hydration heat velocity and autogenous shrinkage velocity of FA-30 and BFS-50 are decreased about 50% than OPC.