• Title/Summary/Keyword: Finishing Material

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High Temperature Properties of Fire Protection Materials Using Fly Ash and Meta-Kaolin (Fly Ash 및 Meta-Kaolin을 활용한 내화성 마감재의 고온특성)

  • Song, Hun;Chu, Yong-Sik;Lee, Jong-Kyu;Do, Jeong-Yun
    • Journal of the Korean Ceramic Society
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    • v.47 no.3
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    • pp.223-231
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    • 2010
  • The serious issue of tall building is to ensure the fire-resistance of high strength concrete. The fire resistant finishing method is necessarily essential in order to satisfy the fire resistance time of 3 h required by the law. The fire resistant finishing method is installed by applying a fire resistant material as a method of shotcrete or a fire resistant board to high strength concrete surface. This method can reduce the temperature increase of the reinforcement embedded in high strength concrete at high temperature due to the installation thickness control. This study is interested in identifying the effectiveness of inorganic alumino-silicate compounds including the inorganic admixture such as fly ash and meta-kaolin as the fire resistant finishing materials through the analysis of fire resistance and components properties at high temperature. The study results show that the fire resistant finishing material composed of fly ash and meta-kaolin has the thermal stability of the slight decrease of compressive strength at high temperature. These thermal stability is caused by the ceramic binding capacity induced by alkali activation reaction by the reason of the thermal analysis result not showing the decomposition of calcium hydrate. Inorganic compounds composed of fly ash and meta-kaolin is evaluated to be very effective as the fire resistance material for finishing to protect the concrete substrate by the reason of those simplicity in both application and manufacture. The additional study about the adhesion in the interface with concrete substrate is necessary for the purpose of the practical application.

The Evaluation of Performance of Finishing Mortar in Ondol Floor Structure Using High-Calcium Fly Ash (고칼슘 플라이애시를 활용한 온돌 바닥용 모르타르의 물성 평가)

  • Lee, Yeong-Won;Song, Young Chan;Kim, Yong-Ro;Mun, Kyoung-Ju
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.05a
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    • pp.289-291
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    • 2013
  • This study evaluated basic material properties of finishing mortar in ondol floor using NSB(Non-sinetering binder), and the binder for the purpose of the developing of high performance mortar and reducing crack problem without shrinkage-reduction agent.

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A Study on the Using Trends of Interior Materials in Current Medium Size Office Building in Seoul (최근 서울시 중형 OFFICE 건물의 실내재료의 사용경향에 관한 연구)

  • 김은중
    • Korean Institute of Interior Design Journal
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    • no.23
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    • pp.19-25
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    • 2000
  • This study aims by analysing the interior design elements trends of current medium size office buildings in Seoul. The analysing objects are ceiling, floor, wall, and illumination plan of current office buildings. Analysing tools are finishing material and color of each part. Analysing areas are lobby area, deskwork area, conference area, welfare area, public area(rest room, corridor, stair). The interior design elements of lobby shows a lots of different features then the other areas in ceiling, floor, and wall design. Such difference appears at finishing material especially, and the coloring is more splendorous then the other areas. Desk work area and conference area have similar characteristics in finishing materiors and colors, and they usually follow the needs of function. Walfare area shows more splendorous feature then deskwork and conference area, and designed by various materials and colors. Public area also shows very active design concept then past times.

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Study on the Temperature and Humidity Control Performance of Hwang-toh Finish (황토 마감재의 온도 및 습도 조절성능에 대한 실험적 연구)

  • Lee, Kyu-In;Yeom, Dongwoo
    • KIEAE Journal
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    • v.12 no.6
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    • pp.99-106
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    • 2012
  • This research tried to analyze the effects of ecological materials 'hwang-toh (yellow soil)' on indoor environments. For this purpose, two full scale mock-ups were constructed: one with silk wall paper, which is generally used for indoor finishing and the other with hwang-toh, which is the ecological material for wall finishing. Comparison and performance evaluations were conducted, and the effects of hwang-toh finishing on a humid indoor environment were verified. Through this research, it was verified that a hwang-toh plaster finish is effective in maintaining the comfort of an indoor environment.

Research on Physical Changes Based on Drying After Downpour Penetration of Floor Finishing Use Granite Stone (호우로 인한 바닥 마감용 화강석 침수 후 건조상태에 따른 물성변화에 관한 연구)

  • An, Ki-Won;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.05a
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    • pp.173-174
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    • 2015
  • This research takes granite stone based floor finishing exposed to concentrated downpouring and observes the material's physical changes, adhesiveness, compressive strength under wet conditions. The results of the experiments shows that elution of sulfide mineral can occur when granite stones are exposed to downpour, but short term exposure shows little physical changes to the material. This indicates that if post maintenance is properly enacted, long term usage of granite stone materials is also possible.

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A Calculating Method of Chloride Ion Migration Coefficient in Concrete Coated Finish Materials (마감재가 시공된 콘크리트에 있어서 염화물 확산계수 산정 방법)

  • Cho, Han-Kyu;Ahn, Jae-Cheol;Kang, Byoung-Hee;Oh, Sang-Gyun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2011.05a
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    • pp.31-32
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    • 2011
  • The purpose of this study is to investigate the amount of chloride penetration into concrete finishing materials. Chloride ion migration test was used rapid infiltration method proposed by 'NT-Build 492'. The kind of coated finishing material is 'None-finished(N)', 'Cement Mortal(M)', 'Water based paint(P)', 'Bone-Tile(B)', 'Repair Mortal(R1)' in this paper.

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A Study of the Change in Visual Perceptions of Finishing Materials using Lightings with the CG Experiment Method[1]

  • Seo, Ji-Eun
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.11
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    • pp.1-8
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    • 2010
  • This study analyzes whether a person's visual perception differs according to the kinds of light source. Evaluations of the effects of space, color-tone and texture perception revealed that different kinds of light sources change the perception of finishing material. The perception from directly attached lamps was compared to an environment with both directly attached lamps and supplemental lighting. We found the perception changed with changes in the types of supplemental light source We compared the mean value of each perception and found that perceptions change most when incandescent lights were followed by halogen. Thus, one should account for the changes in perception that occur as a result of these changes.

A study on the Evaluation of Surface Properties of UHPC Panels following long-term outdoor exposure (옥외 장기폭로에 따른 UHPC 패널의 표면 특성 평가 연구)

  • Kim, Tae-Ik;Choi, Byung-Keol;Park, Yong-Kyu;Choi, Sang-Hoon;Yoon, Gi-Won;Lee, Dae-Seek
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.04a
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    • pp.176-177
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    • 2022
  • In this study, surface performance evaluation was conducted according to the fiber and surface finishing technique of the exterior material using Ultra High Performance Concrete(UHPC), whitch is spotlighted as a highly durable exterior material. As a result of outdoor exposure, the initial performance of the UHPC Panel using organic fibers was maintained without being affected by the surface finishing technique. In the specimen using steel fiber, the surface performance was maintained when the water repellent treatment was performed in the plain specimen, but fiber corrosion occurred in the specimen to which the surface finishing technique was applied.

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A Study on the Basic Properties of Exterior Insulation Plasterer Finishing Materials by Addition of Calcium Carbonate Powder (탄산칼슘계 분말 첨가에 따른 외단열 미장 마감재의 기초물성에 관한 연구)

  • Shin, Joung-Hyeon;Jo, Su-Yeon;Jung, Ui-In;Kim, Bong-Joo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.213-214
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    • 2021
  • External insulation method is used to conserve energy of buildings. However, the current external insulation method uses organic insulating materials to become a diffusion path in case of fire. In this study, the purpose of this study is to provide basic data on the required performance of the plastering material according to the CaCO3 powder addition of the finishing material of the external insulation method. In Figure 1, when powder was added, the adhesion strength decreased by 30% to 35% at 10% and 0% to 50% at 20% compared to Plain. In Figure 2, the moisture permeability increases approximately twice when powder is added. The results for the water absorption coefficient are shown in Figure 3.

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