Jae Hong Kim
KAIST 건설환경공학부 · 공학
Jae Hong Kim 교수의 연구실은 콘크리트의 거동 및 거동 제어를 핵심으로 하며, 특히 자가설착 콘크리트(Self-Consolidating Concrete, SCC)의 거동 특성과 형식압력 저감 기술, 콘크리트 펌프링 거동 예측, 탄소재활용 콘크리트 기술 등에 중점을 두고 있습니다. CO₂ 이차화합을 통한 콘크리트의 강도 향상 및 탄소 포집 기술에 대한 연구도 활발히 진행 중이며, 류동학적 특성과 미세구조 분석을 융합한 혁신적 접근을 펼치고 있습니다. 이는 고성능·저탄소 콘크리트 기술의 실용화를 위한 기초 연구를 체계적으로 수행하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Owing to enhanced filling ability, self-consolidating concrete offers accelerated casting and superior quality control during construction. However, its high fluidity and high placement rate increase the lateral pressure on the formwork, necessitating an extensive supporting system to retain fresh mixtures in a desired shape. Current recommendations of formwork design for self-consolidating concrete adopt the concept of hydrostatic pressure, even though the measured pressure could be less than t
Large scale constructions needs to estimate a possibility for pumping concrete. In this paper, the state of the art on prediction of concrete pumping including analytical and experimental works is presented. The existing methods to measure the rheological properties of slip layer (or called lubricating layer) are first introduced. Second, based on the rheological properties of slip layer and parent concrete, models to predict concrete pumping (flow rate, pumping pressure, and pumpable distance)
Self-consolidating concrete (SCC) is a recently developed, innovative construction material. With use of SCC no additional compacting is necessary due to its high filling ability; as a result, the labor cost of compacting is economical. However, SCC may require stronger formwork that can resist the higher lateral pressure induced as compared to that for ordinary concrete. This study shows the effects of limestone filler or fly ash replacement on the formwork pressure and workability retention of
Various factors influence the rheology of cementitious pastes, with the most important being the mixing protocol, mixture proportions, and mixture composition. This study investigated the influence of ground-granulated blast-furnace slag, on the rheological behavior of cementitious pastes. In tandem with the rheological measurements, fresh state microstructural measurements were conducted using three different techniques: A coupled stroboscope-rheometer, a coupled laser backscattering-rheometer,
Curing by CO<sub>2</sub> is a way to utilize CO<sub>2</sub> to reduce greenhouse gas emissions. Placing early-age cement paste in a CO<sub>2</sub> chamber or pressure vessel accelerates its strength development. Cement carbonation is attributed to the quickened strength development, and CO<sub>2</sub> uptake can be quantitatively evaluated by measuring CO<sub>2</sub> gas pressure loss in the pressure vessel. A decrease in CO<sub>2</sub> gas pressure is observed with all cement pastes and mortar
