• 복식
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• 제58권4호
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• pp.26-34
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• 2008

The purpose of this study was to create a database of information on the mechanical properties of two different waterproof and breathable shell fabric groups(high density woven and PTFE laminate) used for outdoor apparel and to compare and correlate data of their mechanical properties and hand values. The results of this study were as follows; There were no statistically significant differences between two fabric groups in extension, bending and shearing properties. There were statistically significant differences between two fabric groups in MMD, SMD, LC and we values. High density woven fabrics had smoother surface than PTFE laminated fabrics. PTFE laminated fabrics can be compressed easily more than high density woven fabrics but their recovery after compression was not better than high density woven fabrics. There were statistically significant differences between two fabric groups in NUMERI, FUKURAMI. There was statistically significant difference between two fabric groups in total hand value. Total hand value and mean deviation of MIU had a very high and statistically significant negative correlation coefficient.

• 한국화재소방학회논문지
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• 제33권3호
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• pp.44-50
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• 2019

랙크식 창고 내에는 화재하중이 높은 물품이 수직으로 조밀하게 적재되어 있어 창고의 내부에서 화재가 발생되는 경우 현재의 스프링클러설비에 의해 유효하게 소화되기 어렵다. 이에 본 연구에서는 실물 규모의 랙크 구조물을 구축하고, 구조물 내부의 스프링클러헤드 종류 및 배치에 따른 화재실험을 통해 스프링클러설비에 의한 소화유효성을 확인하였다. 본 연구를 통하여 랙크식 창고의 내부의 화재를 유효하게 진압하기 위해서는 방수량 115 LPM 이상의 스프링클러헤드를 사용해야 하며, 동 스프링클러헤드를 높이 기준이 아닌 랙크 각 단마다 설치해야하고, 각 단의 가연물더미의 대각선 모서리 위치에 설치될 필요가 있다는 것을 알 수 있었다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2004년도 학술대회지
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• pp.77-81
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• 2004

The massive structures are not free to move with vibration, differential settlement, thermal stresses because, construction and expansion joint, crack etc., can be large enough to cause leakage as deformation of waterproofing. It has been depended on the test method of tensile/tear strength which is waterproofing performance as behavior of concrete structure crack. However, not to practically confirm the creep applied to concrete surface, even waterproofing membrane have more performance than definite strength and elasticity. Therefore, in this study will focus on the test method to consider a resistance performance about loose adhesion and deformation of waterproofing and behavior of concrete structure as construction/expansion joint, crack. Performance test method on the influence as behavior of concrete structure crack is to choose waterproofing materials and construction method which possible to confront with behavior of 50mm crack in the atmosphere and low temperature. Examine the deformation of waterproofing membrane and loose adhesion which can occur to structure in general job site, suggest standard testing method to analyze correlation waterproofing membrane and structure with 5-types of materials used in this study, such as Adhesion membrane and sheet complex, sheet and urethane complex, self-adhesive sheet, spray poly-urea, spray membrane of rubberized Asphalt.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.2204-2205
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• 2008

2005년도에 저압 지중함에서 감전사고가 발생한 후 감전예방을 위한 다양한 개선대책이 현장에 적용되었다. 사고발생 직후에는 지중전선의 접속부에 테이핑처리에 의한 보완조치가 적용되었으며, 그 이후 전선 접속 부를 방수형접속재로 교체하는 작업이 시행되었으며 전선 접속부 위를 감전방지용 절연고무판으로 덮거나 차량의 통행이 없는 일부 지중함의 뚜껑을 절연재질인 고강도플라스틱(FRP)으로 교체하거나 그 이외에 다중접지된 중성선과 지중함의 틀을 본딩하는 개선대책 등이 현장에 적용되었다. 이러한 다양한 개선대책은 지중함에서의 감전사고를 예방하기 위한 것으로 그중 틀접지는 이미 적용된 지중함 내의 접지설비와 중성선이 공통접속된 상태에서 지중함과 맞닿는 틀에 접지도체를 연결하는 것이다. 계통의 중성선을 이용한(TN-C)방식의 틀접지는 효과가 있으나 뚜껑부분의 진동방지를 위하여 삽입한 고무패킹은 성능저하를 일으키므로 그에 대한 대책이 필요하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 춘계 학술논문 발표대회
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• pp.41-42
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• 2012

High temperature / high pressure spray equipment using a conventional method, unlike spray polyurea adjustable pot life and yellowing caused by UV light and chemicals do not occur, or discoloration of Self-Leveling Type of rugged hand-polyurea resin for technology development is underway. This new concept of polyurea resin roller, brush, airless spray, and they installed easily using the unfamiliar labor, and curing time of approximately four hours to gain control of the glass because it is Pot. Construction, but does not like the spray polyurea resin, compared to the existing degradation of the adhesion strength is concerned. In this study, Self-Leveling Type Manual of polyurea resin adhesion strength of target deterioration Let's minimize problems by reviewing existing domestic and infrastructure long-term durability for long life of the facility is to obtain.

• 한국의류산업학회지
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• 제14권1호
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• pp.122-129
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• 2012

To develop a waterproof breathable material, we fabricated three kinds of nanofiber web laminates using a massproduced electrospun nanofiber web with different substrates and layer structures. The waterproofness and breathability of nanofiber web laminates were evaluated after repeated launderings and compared with those of conventional waterproof breathable fabrics currently in use, including densely woven fabric, microporous membrane laminated fabric, and coated fabric. The durability of nanofiber web laminates, including adhesion strength, abrasion resistance, tensile strength, and tearing strength, was also assessed and compared with those of conventional waterproof breathable fabrics. The water vapor transmission of nanofiber web laminates increased slightly after repeated launderings, whereas the air permeability somewhat decreased after launderings but still maintained an acceptable level of air permeability. Laundering reduced the resistance to water penetration of nanofiber web laminates, which implies that laminating techniques or substrate materials that could support waterproofness of the laminated structure should be explored. The adhesion strength, abrasion resistance, tensile strength, and tearing strength of nanofiber web laminates were in a range comparable to conventional waterproof breathable materials.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.31-32
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• 2018

Lately, cement mixed siliceous powder waterproofing coating has been used as a waterproofing material in the wet environment condition of an underground concrete structure. Underground is exposed to environmental influences such as pressure of ground water, pressure of soil. However, the quality standard for pressure (water pressure, earth pressure) is not specified in the specification of the cement mixed siliceous powder waterproofing coating. Therefore, in this study, the permeability test was carried out based on the assumption that the durability should be verified in consideration of the environmental aspects of the material in actual field. As a result of the test, the permeability was generated from the inorganic single type material, but it was caused by the sealing failure and the test error, and the permeability was not generated in most of the materials. The results of this study will be analyzed by reviewing the physical properties of the material, and the research direction will be resumed.

• 한국안전학회지
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• 제27권6호
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• pp.109-114
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• 2012

This study is the things to experiment and evaluate the performance of self-healing water-proofing on the concrete to be using the crystal growth composite waterproofing admixture. The cylinder to be making on the concrete by ${\varnothing}150{\times}300$ mm for evaluating the performance of self-healing water-proofing was aging 90 days and cut on a 50 mm. So, it prompted the crack and applied. After it measured the quantity of water to be flow the water throughout the crack part of the cylinder, it applied the basic formular of Darcy's law and calculated the coefficient of water permeability. So, it verified the performance of self-healing water-proofing on the basis of the changing shape of the water permeability. This experiment is the thing to be applied the general evaluation of the structure to demand the real watertightness on doing for the evaluating of performance of the quantity of water leak and self-healing water-proofing about the various penetration crack.

• 한국농촌건축학회논문집
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• 제17권2호
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• pp.9-16
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• 2015

This study comparatively analyzed thermal characteristics of the green color, which is currently used the most, and other various colors of a rooftop urethane water proofing sheet. This study also analyzed the cooling performance by color of the water proofing sheet that fused cooling paints, and presented the effective water proofing sheet color for building energy savings. The experimental results are as follows: (1) The value of L (brightness) diminished, and brilliance also became lower from the white color to the black color, and thus, it was confirmed that relatively more heat was absorbed. In a and b chromaticity, which is the color attribute that ignores brightness, no special relationship was identified. (2) Considering that the cooling performance effect is bigger in summer than winter, due to heat reflection, the white water proofing sheet is more effective in building energy savings than the green water proofing sheet that is currently used the most. (3) The water proofing sheet's color has an impact more on cooling performance than the color of the background side of a structure on which water proofing sheet is installed. The experiment object of gray, of which background side is similar to cement mortar, was lower by $5.7^{\circ}C$ than the white background side.

• 한국결정성장학회지
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• 제30권6호
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• pp.264-270
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• 2020

사용자 중심의 서비스디자인 방법론을 통한 디자인개발을 진행하고 시제품 제작 시 소재 선정 기준에 대해 조사분석하여 선정된 소재인 CFRP(Carbon Fiber Reinforced Plastics) CNT(Carbon Nano Tube)를 동물용 X-ray 디텍터 패널부분에 적용하여 제품디자인 및 시제품 개발을 진행하고 CFRP CNT 패널을 적용하여 완성된 시제품을 Drop 테스트, 전면 외압 강도 시험, 방진/방수 성능 시험을 진행하여 야외환경에서 사용하는 휴대가능한 동물용 X-ray 디텍터로 활용이 가능한 제품임을 확인하였다.