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- 저자 : 황혜주(Hwang Hey-Zoo) (검색결과 38 건)
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황혜주(Hwang, Hey zoo),강남이(Kang, Nam Yi) 한국생태환경건축학회 2010 한국생태환경건축학회 논문집 Vol.10 No.2
Many countermeasures are presented to make excessive earth circumstance pollution better in the earth. A lot of researches are in progress to lessen CO₂ among the industries exhausting it. The industries manufacturing cement are making many countermeasures. Many concernments on ECO-friendly materials, rather than cement, are increased, and researches are in progress to develop them. Lime, material mostly used before Portland cement appeared, attracts the Occident as well as the Orient. In the Occident, lime mortar was used in common, for maintaining and repairing cultural properties, too. This study is aimed at offering basic materials for the modern use of lime, ECO-friendly material. This study measured the change of intensity and weight with lime, sand, and earth, basic materials of Samhoimool. As a result, at the beginning, hydrated lime displayed its density late, but as time was gone, density was promoted continuously. In addition, density was promoted, when it was given heat at the beginning. If heat-generation reaction of quicklime and water was used, density was promoted at the beginning, but liquidity showed a drop.
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흙다짐 적용을 위한 흙의 선정 및 입도조건에 관한 연구
황혜주(Hwang, Hey Zoo),김태훈(Kim, Tae Hun),양준혁(Yang, Jun Hyuk) 한국생태환경건축학회 2009 한국생태환경건축학회 논문집 Vol.9 No.2
Results from tests for what mixing rate of soil and sand is proper for the rammed earth and for how much additives are optimum are as under. 1) In the test to evaluate what mixing rate of soil and sand is desirable, peptizing property and surface sticking rate are found similar in its degree, but compression strength is found most stable when the ratio of soil and sand mixing shows 30:70 which indicates the best mixing rate of soil and sand. 2) In a test to add hydrated lime, compression strength, peptizing property, and surface sticking rate are found best when the mixing rate of soil and sand shows 23:7. 3) In a test to add sea weeds, the peptizing property goes down at 75% of sea weeds input a little bit more than at 100%, but compression strength shows best at 75% which is thought to be the best rate. 4) In a drop test, more soil powder mixed, the sticking strength gets better and more sands are contained, the sticking strength gets far worse to be scattered in powder type. 5) As concluding all results mentioned in the above item, the most desirable mixing rate of soil, sand, and hydrated lime is found to be 23:7:70 for the rammed earth where compression strength, peptizing property, and surface sticking rate are best.
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황혜주(Hwang, Hey Zoo),김태훈(Kim, Tae Hoon),양준혁(Yang, Jun Hyuk) 한국생태환경건축학회 2010 한국생태환경건축학회 논문집 Vol.10 No.6
The objective of this study was to investigate the strength characteristics of mortar with lime composites using natural fiber or superplasticizer. Lime composites consist of lime and pozzolan materials. Flow according to adding natural fiber decreased and mortar proportion added cellulose fiber showed a higher strength characterisitics than other natural fiber. but compressive and shear strength in use of superplasticizer is not effective largely. In addition, lime composites, as an environment-friendly material, may help reduse CO₂, and save the energy. also this materials can be recycled in environmental aspects. afterwards, further in-depth studies will be necessary for cracks and durability with respect to its wide different applications, in applying it as a construction material.
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흙과 모래의 최밀충전효과와 석회복합체의 첨가에 따른 강도 증진
황혜주(Hwang, Hey-Zoo),노태학(Roh, Tae-Hak),강남이(Kang, Nam-Yi) 한국생태환경건축학회 2011 한국생태환경건축학회 논문집 Vol.11 No.4
Earth has been used as a building material not only our country but also many foreign countries in the world. In foreign countries, we can often find the high-storied earthen houses which have been maintained for over several hundred years, which means the fact that earth differs in durability according to the methods of utilizing earth. So, the purpose of this study is to progress the fundamental research for utilizing earth as a wall material. Also, the another purpose of this study is to utilize the optimum micro-filler effect which adjusts the grain size of earth and the lime composite which promotes chemical combining power, and so examine whether earth material ensures its high compressive strength. This study applied both of rammed earth method and pour earth method among earth architecture methods. This study investigated compressive strength, slump, and air content according to unit binder weight. On the basis of such experimental results, this study derived the following conclusions. 1) Optimum micro-filler mixtures reduce a lot of fine particles contained in earth. If optimum micro-filler mixtures are used as aggregates, they develop lower W/B and relatively higher strength than general earth. 2) In this study, which uses optimum micro-filler earth mixtures and lime composite, rammed earth method develops 29MPa and pour earth method develops 28MPa in 28 days compressive strength. Such strengths can be utilized in building walls.
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안료와 볏짚의 첨가량에 따른 흙미장의 색상과 표면질감에 관한 연구
황혜주(Hwang, Hey Zoo),김태훈(Kim, Tae Hun),양준혁(Yang, Jun Hyuk) 한국생태환경건축학회 2009 한국생태환경건축학회 논문집 Vol.9 No.1
In this experiment, we used different addition ratio of the pigment and straw, to improve the decorative effect of the finishing touch while finding the kinds of clay colors taking on many sophisticated images, through the comparison between the various colors and textures of the surface. ⑴ To test the plaster material, added were the pigment of Red, Yellow, Black, and Green by the percentages of 0.5, 1, 1.5, 2, and 2.5, respectively, followed by the analysis of the color changes of the plaster material using the Photoshop (RGB). The results showed the bigger the addition ratio of the red color is, the higher the numeral values of RGB after it dried. However the brightness after drying didn’t showed a big difference depending on the addition ratio. With the addition of the yellow pigment, the color difference between after and before drying was bigger in the order of Blue, Green and Red; the brightness increasingly rose while the saturation changed little. ⑵ When we scratched the plaster surface with U and V shape carving knives, the U knife didn’t make a clean shape digging around the clay plaster material but with smooth textures, while the V knife made a clean cut, which represents its readily use in terms of the decorative function of the clay plaster. ⑶ In an experiment the surface texture was tested with different lengths and additions ratio of the straw, addition of 2cm straw by 1, 2, and 3% presented the most appropriate surface of the plaster.
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