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심상락(Sim, Sang Rak),류동우(Ryu, Dong Woo) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.2
본 연구는 레미콘 회수수(상징수)를 대상으로 CO₂를 다량 고정화하기 위한 기초적 연구로서 Ca(OH)₂와 OPC를 대상으로 초임계 CO₂에 의한 광물탄산화를 실시하였다. 실험결과 Ca(OH)₂와 OPC 모두 반응 후 pH 7로 완전 탄산화가 진행됨을 확인하였다. In this study, as a fundamental study to sequestration a large amount of CO₂ in the concrete slurry water, mineral carbonation by supercritical CO₂ was performed on Ca(OH)₂ and OPC. As a result of the experiment, both Ca(OH)₂ and OPC showed a decrease in pH after the reaction
레미콘 슬러지 고형분을 주재료로 한 자원순환형 콘크리트의 초임계 CO<sub>2</sub> 양생에 관한 기초적 연구
심상락 ( Sim Sang-rak ),이영도 ( Lee Young-do ),류동우 ( Ryu Dong-woo ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.2
In this study, the mechanical properties of resource-recycling concrete containing concrete sludge waste as main materials was compared depending on whether supercritical CO2 curing was applied for the realization of CCU technology. After supercritical CO2 curing, the compressive strength of the steam-cured specimen was lowered, but it was confirmed that the compressive strength of the underwater-cured specimen was improved.
탄산화 양생 조건에 따른 시멘트 페이스트의 기초적 특성 평가
심상락 ( Sim Sang-rak ),류동우 ( Ryu Dong-woo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
In this study, as a fundamental research to establish the mechanism of carbonate precipitation, we compared and evaluated the mechanical properties of cement paste under different carbonation conditions. The research results showed that as the CO<sub>2</sub> concentration increased, the compressive strength also increased.
가압 탄산화를 통한 레미콘 회수수의 CO<sub>2</sub> 고정화에 관한 기초적 연구
심상락 ( Sim Sang-rak ),류동우 ( Ryu Dong-woo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
In this study, in CO<sub>2</sub> sequestration was carried out through pressure carbonation for concrete slurry water to realize carbon neutrality in the cement industry. As a result of the experiment, it was confirmed that as the pressure of CO<sub>2</sub> increased, the pH decreased and the amount of CaCO<sub>3</sub> produced increased. However, despite the CO<sub>2</sub> pressure of 5 bars, the carbonation reaction for 10 minutes alone did not proceed completely.
섬유혼입 고강도 콘크리트의 화재 후 표면보수재료의 종류에 따른 중성화 저항성 비교·평가에 관한 연구
심상락 ( Sim Sang-rak ),류동우 ( Ryu Dong-woo ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.1
In this study, after applying a silicate-based impregnation and polymer-based coating to fire damaged high strength concrete, carbonation resistance was evaluated to compare and evaluate the carbonation depth according to the type of surface repair materials. As a result of the experiment, it was confirmed that the carbonation resistance was increased in the case of the concrete with the surface repair materials compared to the control specimen without the surface repair materials. In particular, in the case of the polymer-based coating agent, it was confirmed that the carbonation hardly progressed.