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文學龍,裵正烈,황인성,한천구 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
This study is to investigate the influence of W/C and fineness modulus of aggregate on the bleeding of concrete. According to the result, the lower W/C is, the less bleeding occurs. As for the properties of bleeding with the variation of fineness modulus, the amount of bleeding is small with the continuous grading in the middle of the standard grading range in the case of coarse aggregate, and it grows smaller with a decrease of fineness modulus in the case of fine aggregate. Therefore, it proves that using coarse aggregate with the continuous grading in the middle of the standard grading range and fine aggregate with smaller fineness modulus in the standard grading range is the effective method for reducing bleeding at the same W/C.
황인성,文學龍,金光華,한천구 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
This study is to investigate the influence of contents of mineral admixture on bleeding of concrete. According to the results, as W/B increases, bleeding occurs rapidly at early age regardless of replacement of mineral admixture, and when slump and air content are kept equal, the amount of bleeding decreases proportionately with an increase of replacing ratio of fly ash and blast furnace slag powder. Bleeding speed is highest at 60 minutes after placing concrete, and grow slower after 180 minutes. Bleeding speed also grows high with an increase of W/B, and is lower in the case of fly ash than in the case of blast furnace slag powder.
팽창재 및 수축저감제 사용에 따른 고성능 콘크리트의 특성
문학룡,황인성,한천구 청주대학교 산업과학연구소 2004 産業科學硏究 Vol.21 No.2
This study is investigate the fundamental and shrinkage properties of high performance concrete of W/B 30% with using expansive additive and shrinkage reducing agent. According to the results, it is considered that fluidity and air content are hardly influenced and strength development well by using expansive additive and shrinkage reducing agent. As for the shrinkage properties, it shows the best efficient to reduce autogenous and drying shrinkage when combined use of expansive additive and shrinkage reducing agent which have different shrinkage reducing concept. There for, combined use of expansive additive and shrinkage reducing agent is efficient to reduce shrinkage in high performance concrete of W/B 30%.
운반시간 지연에 의해 저하된 레미콘의 성능회복에 관한 기초적 연구
전충근,文學龍,황인성,양성환,한천구 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
In this paper, availability of deteriorated remicon due to delaying delivery time is discussed. According to test results, fluidity and air content of plain concrete exhibited a tendency to decline with a elapse of time. After 90 minutes since mixed, use of superplasticizer and AE admixture resulted in an increase in fluidity and air content. Adequate dosage of superplasticizer and AE adimixture is found to add with 0.4% and 0.002% respectively to restore the level of original slump and air content from loss one. Setting time of concrete exhibited an acceleration with an increase in leaving time of concrete. Compressive strength of plain concrete is enhanced with and increase of leaving time of concrete. Therefore, it is found that the use of superplasticizer with 0.4% and AE admixture with 0.002% has a desirable effect on restoring the deteriorated quality of concrete related to fluidity, air content and setting time without strength loss caused by delivery time delaying.
콘크리트의 블리딩에 미치는 시멘트 제조사 및 분말도의 영향
金恩浩,文學龍,황인성,한천구 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
This study is to investigate the influence of the manufacturing company and fineness of cement on bleeding of concrete. According to the results, as fineness of comment increases, slump and air content of fresh concrete decrease, and setting time is shortened. The amount of bleeding abates with an increase of fineness, and it is confirmed that bleeding does not occur especially in the case of B8000. it is confirmed that bleeding does not occur. Bleeding speed is higher in the case of OPC A than in the case OPC B, and grows low with an increase of fineness. It also becomes highest at about 60 minutes, and shows slow tendency in W/C of 45% in comparison with W/C of 50%. And It is confirmed that relativity between fineness of cement and the final amount of bleeding is very favorable. As the properties of hardened concrete, compressive strength do not make much difference between OPC A and B is little, and increases with an increase of fineness.
Application of Graphics Originality in Advertising Design
Yin Xiao-long (사)한국디지털디자인협의회 2007 (사)한국디지털디자인협의회 conference Vol.2007 No.1
Graphics originality is the basic way of design thinking. It also provides some effective techniques for design practice. Today, advertising design can make full use of various graphics originalities, thus ad can have great visual effect and achieve their goals. This essay will discuss the importance of graphics originality by analyzing specific ad design cases in the base of graphics originality means. And this essay may help to widen the thoughts of advertising originality and design.
Application of Graphics Originality in Advertising Design
Yin Xiao-long 한국디자인지식학회 2007 한국디자인지식학회 Conference Vol.2007 No.8
Graphics originality is the basic way of design thinking. It also provides some effective techniques for design practice. Today, advertising design can make full use of various graphics originalities, thus ad can have great visual effect and achieve their goals. This essay will discuss the importance of graphics originality by analyzing specific ad design cases in the base of graphics originality means. And this essay may help to widen the thoughts of advertising originality and design.