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굴 패각을 잔골재로 사용한 모르타르의 물시멘트비에 따른 강도특성
정의인 ( Jung Ui-in ),최인권 ( Choi In-kwon ),허민회 ( Heo Min-hoe ),김봉주 ( Kim Bong-joo ),원철희 ( Won Chul-hee ),최호림 ( Choi Ho-rim ) 한국건축시공학회 2016 한국건축시공학회 학술발표대회 논문집 Vol.16 No.2
Oyster shell is light weighted and its strength characteristic is similar to sand. So we produced mortar test piece using grounded oyster shell powder under 0.5mm, which is a standard of fine aggregate, and reviewed strength properties according to water cement ratio. In our test, we used two kinds of oyster shell particles: below 0.6㎜ and 1.2~2.5㎜. Water cement ratio is varied 40% to 100% and we found that flexural strength and compressive strength are decreased in higher water cement ratio.
굴 패각을 잔골재로 사용한 모르타르의 질량비 변화에 따른 강도특성에 관한 연구
정의인 ( Jung Ui-in ),유남규 ( Yu Nam-gyu ),홍상훈 ( Hong Sang-hun ),김봉주 ( Kim Bong-joo ),원철희 ( Won Chul-hee ),최호림 ( Choi Ho-rim ) 한국건축시공학회 2016 한국건축시공학회 학술발표대회 논문집 Vol.16 No.2
Oyster shell is produced by shucking process in oyster farming in southern coast of Korea. In average, about 6.7kg of oyster shell is produced as an industrial waste for 1kg of oyster flesh, and even only in last year, it is estimated that about 150,000 ton of oyster shell is produced. Oyster shell is light weighted and the strength characteristic of it is similar to sand. So we produced mortar test using different law of multiple proportions of grounded oyster shell powder of its particle size according to fine aggregate standard and reviewed strength Properties.
굴 패각을 채움재로 사용한 모르타르의 섬유 혼입에 따른 강도특성에 관한 연구
정의인 ( Jung Ui-in ),홍상훈 ( Hong Sang-hun ),유남규 ( You Nam-gyu ),김봉주 ( Kim Bong-joo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
Oyster shell is produce by shucking process in oyster farming in southern coast of Korea. In average, about 6.7kg of oyster shell is produced as an industrial waste for 1kg of oyster flesh, and even only in last year, it is estimated that about 150,000ton of oyster shell is produced. Oyster shell is light weighted and the strength characteristic of it is similar to send. We produced mortar test piece using grounded oyster shell powder according to Filler and Fiber. So I wanted to measure the strength and use it as a baseline for follow-up studies.
라멘식 모듈러 건축물 벽체 적용을 위한 경량 콘크리트의 공학적 특성
정의인 ( Jung¸ Ui-in ),이민재 ( Lee¸ Min-jae ),주영길 ( Ju¸ Young-gil ),김봉주 ( Kim¸ Bong-joo ) 한국건축시공학회 2023 한국건축시공학회지 Vol.23 No.5
본 연구에서는 라멘식 모듈러 건축물의 비내력 벽체 적용성 검토를 목적으로 국가건설기준센터 KCS 14 20 20 경량골재 콘크리트에서 규정하는 성능을 기준으로 바텀애시와 코팅된 발포폴리스티렌 비드를 활용하여 경량 콘크리트 실험을 진행하였다. 코팅된 발포폴리스티렌 비드를 사용할 경우, 경량 콘크리트 강도 성능에 부정적인 영향을 주는 것으로 나타났다. 하지만 단위 질량의 감소와 단열성능에 긍정적인 영향을 주는 것으로 나타났고, 바텀애시의 경우 기존 연구와 마찬가지로 내부 공극 특성으로 인하여 열전도율 값이 낮게 나타났다. 이를 통하여 발포폴리스티렌 비드 50%와 10~20mm의 바텀애시 50%를 굵은 골재로 대체하는 배합이 표준시방서의 단위 질량과 설계기준 강도를 만족하며 가장 열전도율이 낮은 배합으로 나타났다. This research embarked on a comprehensive examination of the engineering characteristics of lightweight concrete intended for implementation in rhamen-type modular building walls. The concrete was formulated utilizing bottom ash and coated EPS beads, in accordance with the Korea Construction Standards Center(KCS) 14 20 20 “Lightweight Aggregate Concrete”. Our findings articulate that while EPS beads tend to diminish the compressive strength of the lightweight concrete, they concurrently contribute to a notable reduction in unit mass. The porous nature of the bottom ash endows the material with diminished thermal conductivity. Significantly, a mixture containing 50% EPS beads and 50% BA20 aggregates, replacing half of the coarse aggregates, was found to meet the standard specifications.
유닛 커튼월 프로파일 형상에 따른 단열성능에 관한 연구
정의인 ( Jung Ui-in ),홍상훈 ( Hong Sang-hun ),김해나 ( Kim Hae-na ),박준서 ( Park Jun-seo ),김봉주 ( Kim Bong-joo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
The unit curtain wall is an exterior finish currently used on the exterior walls of high-rise buildings. Curtain walls used as non-endurance walls are largely classified into stick curtain walls and unit curtain walls, and their use has recently been on the rise to reduce risks at construction sites through factory manufacturing. Accordingly, this study attempted to examine the insulation performance according to the shape of the unit curtain wall profile through insulation simulation.
유닛 커튼월 프로파일 형상 변화에 따른 구조 성능 검토에 관한 연구
정의인 ( Jung Ui-in ),홍상훈 ( Hong Sang-hun ),김해나 ( Kim Hae-na ),박준서 ( Park Jun-seo ),김봉주 ( Kim Bong-joo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
The unit curtain wall is an exterior finish currently used on the exterior walls of high-rise buildings. Although the structural impact is not significant due to the non-strength wall, in the case of the unit curtain wall to which the factory manufacturing method is applied, deformation of the profile may occur according to its own weight. Therefore, in this study, stability is evaluated through design standard calculation applied when finishing the outer wall according to the design shape of the unit curtain wall profile.
유니트 커튼월 멀리온 레일 양중 시스템의 경제성 및 현장 적용 가능성에 관한 연구
정의인 ( Jung Ui-in ),김해나 ( Kim Hea-na ),김봉주 ( Kim Bong-joo ) 한국건축시공학회 2021 한국건축시공학회지 Vol.21 No.1
본 연구는 최근 고층 건축물의 외장 마감으로 사용되는 커튼월 중, 유니트 커튼월 방식의 양중 문제 해결을 위하여 커튼월의 수직부재인 멀리온을 레일로 활용하고자 하였다. 커튼월 멀리온의 레일 적용에 따른 양중 가능 여부는 Mock-Up Test의 진행을 통해 20m/sec의 풍속에도 양중이 가능한 것으로 나타났으며, 비교를 위해 선정된 현장 기준으로 공사 기간은 약 20% 단축이 가능하며 투입 인원은 약 33%를 줄일 수 있을 것으로 분석되었으며, 10,000㎡의 설치를 가정하면 80% 이상의 시공비용 절감이 가능한 공법으로 판단된다. This study was to solve the lift problem of the existing unit curtain wall type by using the vertical material mullion as a rail in curtain wall, which is recently used as an external finishing material for high-rise buildings. It has been shown that the application of the curtain wall mullion's rail can be quantified even at 20m/sec wind speed through the Mock-Up test. Based on the sites selected for comparison of construction methods, it was analyzed that the construction period could be shortened by 48 days, or about 20 percent. It was analyzed that the number of construction workers could be reduced by about 33 percent from the previous nine to six. Based on these results, assuming the installation of curtain wall units of 10,000㎡, it is judged that construction cost can be reduced by 80% or more.