http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
제 1 인산 암모늄 사용량에 따른 시멘트 모르타르의 철근방청성능 평가에 관한 실험적 연구
트란득탄 ( Tran Duc Thanh ),이한승 ( Lee Han-seung ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.1
Phosphate based inhibitor is playing a decisive role in inhibiting the corrosion of steel rebar in chloride condition. We have used different amount of ammonium phosphate monobasic (APMB) as corrosion inhibitor in mortar with different amount of chloride ions. The compressive strength, flexural strength, open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization resistance (PPR), scanning electron microscopy (SEM) and Raman spectroscopy were performed to access the effect of inhibitor on corrosion resistance. As the amount of inhibitor is increased, the compressive strength increased. The electrochemical results show that as the amount of inhibitor and chloride ions are increased, the total impedance and corrosion resistance of steel rebar increased attributed to the formation of the stable oxide films onto the steel rebar surface. It is suggested that APMB can work in high concentration of chloride ions present in concrete where phosphate ion helps in formation of stable and protective phosphate based oxide film.
3.5 wt.% NaCl로 오염된 SCP 용액의 부식 개시 완화에 대한 하이브리드 억제제의 효과
트란득탄 ( Tran¸ Duc Thanh ),이한승 ( Lee¸ Han-seung ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2
In this study, the optimum amount of hybrid inhibitors i.e. L-Arginine (LA) and sodium phosphate tribasic dodecahydrate (SP), applied for carbon steel rebar in simulated pore concrete (SCP) solution contaminated with 3.5 wt.% NaCl, was discovered. The corrosion inhibition performance of hybrid inhibitors was investigated by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The highest corrosion inhibition efficiency was found as 99.52% corresponding to 2% LA and 0.25% SP after 210 h exposure. Anodic type inhibition action was confirmed by potentiodynamic polarization study. Surface studies including scanning electron microscopy (SEM), and atomic force microscopy (AFM) were used to figure out the surface morphology of the steel rebar treated with hybrid inhibitors in order to collaborate with electrochemical studies.
알칼리성 환경에서 부동태 피막 개선에 대한 양쪽성 이온 및 인산염 그룹을 갖는 염화물 이온의 역할
트란득탄 ( Tran Duc Thanh ),이한승 ( Lee Han-seung ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.1
In this study, the optimum amount of chloride ions is used to collaborate with hybrid corrosion inhibitor for carbon steel rebar treatment in simulated pore concrete (SCP) solution is discovered. The corrosion inhibition performance of hybrid inhibitors is carried on by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PP). The highest corrosion inhibition resistance is found in case of LP-C2 after 240 h exposure. Surface studies including scanning electron microscopy (SEM), and atomic force microscopy (AFM) were used to figure out the surface morphology of the steel rebar treated with hybrid inhibitors in order to collaborate well with electrochemical studies. Anodic type inhibition action was confirmed by potentiodynamic polarization study.
철근 콘크리트의 Zwitterion 및 인산염 기반 하이브리드 부식 억제제: 염화물 임계값 및 사용 수명 결정
트란득탄 ( Tran Duc Thanh ),정민구 ( Jeong Min-goo ),이한승 ( Lee Han-seung ),양현민 ( Yang Hyun-min ),싱지텐드라쿠마 ( Singh Jitendra Kumar ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
Corrosion of reinforcement steel is a major cause of deterioration in reinforced concrete (RC) structures. In order to protect these structures from corrosion, corrosion inhibitors are added to the concrete mix. In recent years, zwitterionic compounds have shown promising results as corrosion inhibitors in concrete due to their ability to form a protective layer on the surface of the reinforcement steel. The experimental study involves preparing concrete samples with different concentrations of adding the hybrid corrosion inhibitor at a high concentration of chloride ions. This study aims to determine the chloride threshold value and service life of hybrid corrosion inhibitors in reinforced concrete based on zwitterions. The samples are subjected to accelerated corrosion tests in a chloride environment to determine the threshold value and service life of the corrosion inhibitor. The effect of hybrid inhibitor on mechanical properties is guaranteed in allowable range. The chloride threshold concentration and service life of hybrid inhibitor containing samples perform greater than those of plain RC.
GGBFS 페이스트 및 모르타르의 탄산 : γ-Dicalcium 규산염 대체가 기계적 특성 및 미세 구조 특성에 미치는 영향
트란득탄 ( Tran Duc Thanh ),이윤수 ( Lee Yun-su ),옌스뤠이 ( Yan Sirui ),이한승 ( Lee Han-seung ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.1
γ-dicalcium silicate (γ-C2S) is characterized by its strong carbonation reactivity and has the prospect to be utilized as a building material with the added benefit of CO2 capture. This paper aims to point out the impact of γ-C2S on the microstructure characteristics and mechanical properties of GGBFS paste, and mortar samples. Three curing conditions including un-carbonation, natural carbonation, and accelerated carbonation were applied to the research. Besides, hydration products after the carbonation process are also detected. What’s more, the carbonation treatment method also meets the requirement of capture more greenhouse gas and recycles the waste products of metallurgy.
가속 탄화 조건에서 γ-C<sub>2</sub>S 첨가가 모르타르 함유 GGBFS의 특성에 미치는 영향
트란득탄 ( Tran Duc Thanh ),이한승 ( Lee Han-seung ),싱지텐드라쿠마 ( Singh Jitendra Kumar ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
γ-dicalcium silicate (γ-C<sub>2</sub>S) is characterized by its strong carbonation reactivity and has the prospect to be utilized as a building material with the added benefit of CO<sub>2</sub> capture. This paper aims to point out the impact of γ-C<sub>2</sub>S on the microstructure characteristics and mechanical properties of GGBFS paste, and mortar samples. The compressive strength of γ-C<sub>2</sub>S added GGBFS cement mortar is higher compared to without γ-C<sub>2</sub>S in accelerated carbonation (AC) up to 14 days of curing but once the curing duration is increased, there is no significant improvement in compressive strength. This study suggests that γ-C<sub>2</sub>S can capture the atmospheric CO<sub>2</sub> (mostly generated from cement and metallurgy industries) and utilized in construction.
양쪽성 이온 및 인산염 기반 하이브리드 방청제의 전기화학적 특성에 관한 실험적 연구
트란득탄 ( Tran Duc Thanh ),정민구 ( Jeong Min-goo ),이한승 ( Lee Han-seung ),양현민 ( Yang Hyun-min ),싱지텐드라쿠마 ( Singh Jitendra Kumar ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.2
During the past decades, the corrosion of the steel rebar embedded in concrete structure surrounding marine environment is actually problematic and required the suitable preventive method. An eco-friendly corrosion inhibitor mix is investigated to stifle the active corrosion in comparison with other commercial corrosion inhibitors. The hybrid inhibitor enhances the corrosion resistance and the workability of concrete. However, it reduces the compressive strength slightly after 28-day-age. The electrochemical studies and mechanical studies are pointed out the corrosion resistance property, corrosion kinetics, and the mechanical properties of all concrete samples. H-3 is the optimum dose of hybrid inhbitor that meets the demand of both electrochemical property and mechanical property. It performs the noble features due to the formation of optimum amount of P-Zwitterions-(Cl)-Fe complex onto the steel rebar surface.