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고강도콘크리트 벽체부재에 접합분리 시험체를 활용한 강도관리에 관한 연구
기전도 ( Jun Do Ki ),김학영 ( Hak Young Kim ),김광기 ( Kwang Ki Kim ),백민수 ( Min Su Paik ),임남기 ( Nam Gi Lim ),정상진 ( Sang Jin Jung ) 한국건축시공학회 2009 한국건축시공학회 학술발표대회 논문집 Vol.9 No.2
The existing techniques used to estimate and manage the compressive strength of concrete do not include the environmental factors that influence the development of compressive strength and the compressive strength itself. Thus, it is necessary to develop a reasonable yet simple way to measure the compressive strength of concrete structures at construction sites by considering concrete``s mechanical properties and curing environment. This study was conducted to propose an acrylic form and a junction isolation mold with crack-inducing boards that uses non-destructive methods to create and collect concrete test samples that are cured in the same condition as the actual concrete structures. junction isolation molds were used in high-strength and super high-strength concrete to evaluate the reliability of compressive strength evaluation on the test sample. The following were the findings of this study:
기전도 ( Ki Jun-do ),이상현 ( Lee Sang-hyun ),김영선 ( Kim Young-sun ),전현수 ( Jeon Hyun-soo ),석원균 ( Seok Won-kyun ),양완희 ( Yang Wan-hee ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
Eco-friendly concrete contains only 5% of cement yet achieves equal or greater strength compared to conventional concrete, reducing salt-attack impact and hydration heat by more than 30% and ensuring higher construction quality for underground structures. Furthermore, eco-friendly concrete can reduce up to 90% of carbon dioxide emissions compared to traditional concrete, enabling a reduction of approximately 6,000 tons of carbon emissions for 1,000 of apartment units construction. This is equivalent to planting around 42,000 trees
Phosphate-PCM계 보급형 저발열 콘크리트 베트남 지역 현장 적용 평가
기전도 ( Ki Jun-do ),이상현 ( Lee Sang-hyun ),조홍범 ( Cho Hong-bum ),김영선 ( Kim Young-sun ),전현수 ( Jeon Hyun-soo ),양완희 ( Yang Wan-hee ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.2
This study aims to develop the hydration heat reducing material (powder type) to lower the heat of hydration of mass members in the extremely hot weather condition. In this study, we applied the developed material to the concrete that used two kinds of binders with cement and evaluate the concrete properties with it.
도기질 타일 부착조건(바탕면, 붙임재료 및 양생조건)이 부착강도에 미치는 영향에 관한 실험적 평가
기전도 ( Ki Jun-do ),이상현 ( Lee Sang-hyun ),조홍범 ( Cho Hong-bum ),김영선 ( Kim Young-sun ),곽동영 ( Kwak Dong-young ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
This study aims to find out the reason that tile adhesive(type Ⅲ) for ceramic tile does not harden under some conditions especially high humidity even though long curing time. Bonding strength of adhesive between substrate and ceramic tile is evaluated depending on bonding conditions such as substrate kind(concrete, board), bonding material (tile adhesive, tile cement) and curing condition(humidity 50, 70%). Based on the results, this study aimed to establish the quality of tile adhesion strength under the relevant conditions.
기전도(Ki Jun-Do),김학영(Kim Hak-Young),이영도(Lee Young-Do),정상진(Jung Sang-Jin) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.4
The existing techniques used to estimate and manage the compressive strength of concrete do not include the environmental factors that influence the development character of compressive strength and the compressive strength itself. Thus, it is necessary to develop a reasonable yet simple way to measure the compressive strength of concrete structures at construction sites by considering concrete's mechanical properties and curing environment. This study was conducted to propose an acrylic form and a junction isolation mold with crack-inducing boards that uses non-destructive methods to create and collect concrete test samples that are cured in the same condition as the actual concrete structures. junction isolation molds were used in high-strength and super high-strength concrete to evaluate the reliability of compressive strength evaluation on the test sample. The following were the findings of this study.
Phosphate-PCM계 복합물질 기반 저발열 콘크리트의 특성 평가
기전도 ( Ki Jun-do ),이상현 ( Lee Sang-hyun ),조홈범 ( Cho Hong-bum ),김영선 ( Kim Young-sun ),석원균 ( Seok Won-kyun ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.1
This study aims to develop the hydration heat reducing material (powder type) to lower the heat of hydration of mass members in the extremely hot weather condition. In this study, we applied the developed material to the concrete that used two kinds of binders with cement and evaluate the concrete properties with it.