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유체해석 프로그램을 이용한 골재의 입자크기 및 입도, 구성위치에 따른 배수층의 특성 평가
임창민 ( Lim Chang-min ),권현우 ( Kwon Hyun-woo ),김영민 ( Kim Young-min ),조도영 ( Cho Do-young ),이건철 ( Lee Gun-cheol ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.2
Due to recent climate abnormalities, the form of rainfall is changing to localized torrential rains. Localized torrential rains cause flooding in urban areas. In addition, in various industrial fields, there are cases where materials necessary for the process are kept outdoors, and damage from material loss and flooding of stockyards occurs during heavy rain. Accordingly, it is necessary to introduce a drainage layer where flooding is expected. This drainage layer places the aggregate inside and allows rainwater to penetrate and drain into the voids between the aggregates. However, the amount of voids differs according to the particle size distribution and particle size of the aggregate, and the drainage performance varies according to the compositional location of the aggregate. Therefore, in this study, the drainage characteristics according to the particle size, particle size, and compositional location of aggregates are analyzed using a fluid analysis program.
X-선 회절 분석을 통한 CO<sub>2</sub> 나노버블수 침지 전기로 슬래그 촉진 에이징 검토
임창민 ( Lim Chang-min ),임건우 ( Im Geon-woo ),김영민 ( Kim Young-min ),이건철 ( Lee Gun-cheol ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
In this study, the steel slag was immersed in CO<sub>2</sub> nano-bubble water by Electric arc funace it was accelerated aging was reviewed through XRD analysis. The main minerals of the electric furnace oxidized slag were spinel and gehlenite, and there was no change with the number of CO<sub>2</sub> nano-bubbles. Minerals such as larnite, calcio-olivine, agnetite, calcite, and spinel were distributed in electrically reduced slag, and the content of calcite more than doubled with CO<sub>2</sub> nano-bubble immersion. Therefore, it is judged that the acceleration aging of Electric arc funace reduced slag is effective according to the immersion of CO<sub>2</sub> nano-bubble.
CO<sub>2</sub> 나노버블 에이징 시간에 따른 전로슬래그의 화학적 특성
임창민 ( Lim Chang-min ),임건우 ( Im Geon-woo ),김영민 ( Kim Young-min ),이건철 ( Lee Gun-cheol ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
In this study, the chemical composition of converter slag according to CO<sub>2</sub> nanobubble promotion aging time was examined. The CO<sub>2</sub> nanobubble water immersion time was 0, 12, 24, 36, 48 hours, and then dried and pulverized to perform XRD analysis. As a result, the longer the sample was immersed in CO<sub>2</sub> nanobubble water, the higher the amount of calcite produced, and the change after 36 hours was minimal.
초고분말 IGCC 플라이애시가 혼입된 프리팩트 그라우팅 몰드의 초기 강도 특성
임창민 ( Lim Chang-min ),권현우 ( Kwon Hyun-woo ),김영민 ( Kim Young-min ),이건철 ( Lee Gun Chul ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.1
In this study, the Prepacked infilling mortar to which IGCC Ultra-Fine Fly Ash was added was evaluated when grouting aggregates. Efflux, Consistency, and Compressive Strength were measured, and it was found to have high fluidity when mixing IGCC Ultra-Fine Fly Ash, but the initial compressive strength was low
CO₂ 나노버블을 이용한 전기로 슬래그의 촉진 에이징 검토
임창민 ( Lim Chang-min ),임건우 ( Im Geon-woo ),김영민 ( Kim Young-min ),이상형 ( Lee Sang-hyung ),이건철 ( Lee Gun-cheol ) 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.27 No.1
본 연구에서는 CO<sub>2</sub> 나노버블을 이용한 전기로 슬래그의 촉진 에이징 가능성 여부를 검토하였다. 촉진 에이징 방법으로는 슬래그 골재를 CO를 포함하고 있는 나노버블에 침지하는 방식으로, 24시간 시료를 침지후 질량변화율 및 SEM을 이용한 표면관찰을 실시하였다. 전기로 스래그 중산화슬래그는 중량변화율이나 SEM 표면에서 큰 변화가 없었지만, 환원슬래그는 중량이 유의미하게 증가하였고, SEM 측정결과에서도 표면에 탄산칼슘 결정상인 칼사이트가 다량 생성되는 것을 확인하였다.