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온수양생 시 양생온도에 따른 초고강도 콘크리트의 강도 조기 추정에 관한 연구
여상길(Yu, Sang-Gil),하정수(Ha, Jung-Soo),명로언(Myung, Ro-Oun),송용원(Song, Yong-Won),공민호(Gong, Min-Ho),정상진(Jung, Sang-Jin) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.5
In this study, expedite curing period at curing temperature being 40, 60, 80℃ similar to strength of standard 28days curing temperature to confirm methods and applicability of early estimation of strength by warm water curing. Also, checked the effect related to different conditions such as using various kinds of material, differentiating quantity of material, with or without fiber mixing at same rate of water-bonding material. Existing method proposed by KS and JIS to estimate strength of 28 days standard curing temperature curing for 7days at 40℃ is not relevant because it takes so long to estimate strength. Already known method of estimating strength of 28days standard curing temperature curing for 3days in 60℃ warm water, too, is not relevant to apply 3day cycle of super high-rise. It also had the problem which didn’t consider fiber mixed concrete. According to the result of experiment, traits and rate of strength revelation were different relating to the kinds and quantity of bonding material. Strength value of mix without fiber was higher than that of mix with fiber, but without any relation to that, over 96% of similar confidence level with strength of 28 days standard curing temperature was shown in 7 days at 40℃, 3 days at 60℃, 2days at 80℃. Confidence level of estimation method of 2 days at 80℃ was similar to those of estimation methods of 4 days at 40℃, 3 days at 60℃, so it(2 days at 80℃) is regarded as the most relevant method because it’s possible to estimate strength fastly. As a result it can be said that early quality control of recently increasing super high-rise may be possible through estimation method of 2 days at 80℃.
2008 S/S 샤넬 스타일의 조형적 특징에 관한 연구
여상미 부산여자대학 2008 釜山女子專門大學 論文集 Vol.30 No.-
The purpose of this study is to Research About Formative Characteristics of Chanel’s Style as shown in the collection magazine 2008 Spring & Summer Paris Milano New York. The results of study can be summarized as follows The shape is that original shape of suit continue and one piece and dress come out the beauty of brevity, sports wear come out the functional beauty. The color is that black come out representative and white and gold, etc. The fabrics is that various fabrics and silk come out and the motive is influenced by Pop art. The accessories come out original accessories and twist to modern shape.
온수양생을 이용한 초고강도 콘크리트의 강도 조기 추정에 관한 실험적 연구
여상길,최원일,김지훈,정상진 단국대 부설 리모델링연구소 2012 리모델링 연구소 논문집 Vol.10 No.2
In this study, prediction of later-age compressive strength of ultra-high strength concrete, based on the accelerated strength of concrete cured in hot water was investigated. Comparing other acceleration method, hot water curing method is relatively easy and intuitive to use in the real construction site. The amount of time for evaluation of the concrete strength using the hot water curing method in KS and JIS is too long to predict the strength of the ultra-high strength concrete that are used in the tall building structure. For that reason, curing temperature of 40, 50, 60℃ 3 levels were examined to shorten the amount of time for the evaluation of the strength. When curing in warm water, different strength characteristics are verified from the experiment. In case of F3 substituting 30% fly ash in combination, because of the curing temperature sensitivity of fly ash, differences of strength expression velocity was verified according to the curing temperature at the same age. In case of B4 substituting 40% ground granulated blast furnace slag, there were no big strength expression velocity differences of the specimen cured in 3 different level of curing temperature(40, 50, 60℃). The results show reliable accuracy by regression relation between 28day strength cured by standard curing method and accelerated strength of concrete cured in warm water.(y=1x-0.0002 R2=0.9866) As a result, the feasibility of 3day-prediction was confirmed using warm water curing method with accelerated strength of concrete cured for three days in warm water.
산화구리에 의한 배기가스중의 아황산가스제거 : 반응속도에 관한 연구(Ⅱ) A Kinetic Study (Ⅱ)
여상도,신창섭,이태희 연세대학교 산업기술연구소 1986 논문집 Vol.18 No.1
The reaction between cementated copper powder of average radius 1.2 ×10?㎝ and sulfur dioxide of 1.54, 2.66 and 3.13 volume percent in the air was carried out in a fixed bed reactor over a temperature range of 300-500℃. Experimental results showed that the optimum reaction temperature for the removal of sulfur dioxide was 422℃ and the removal efficiency was improved at low inlet concentration of sulfur dioxide. The reaction between cupric oxide powder and sulfur dioxide was interpredted by shrinking unreacted core model and chemical reaction was found to be rate controlling step. The rate epuation of the reaction was as follow. r=4345.9 exp (-7086.9/RT) (1-X)? C?
여상운 한국헤세학회 2006 헤세연구 Vol.16 No.-
Rousseaus Einfluss auf Die Leiden des jungen Werther von Goethe- Lotte als ein Frauenbild und Frauenbildung
2009 S/S 샤넬 스타일의 조형적 특징에 관한 연구
여상미 부산여자대학 2009 釜山女子專門大學 論文集 Vol.31 No.-
he purpose of this study is to Research About Formative Characteristics of Chanel's Style as shown in the collection magazine 2009 Spring & Summer Paris Milano New York. The results of study can be summarized as follows : The shape is that original shape of suit continue and one piece and dress come out the simple of line and brevity and functionality in the case of three pieces. The color is that black come out representative and white and silver gray, etc. The fabrics is that various fabrics and silk come out and especially metallic knit. The accessories keep up original accessories and come out various items and a more modern shape.