http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
가열 조건에 따른 100MPa 콘크리트의 폭렬 특성 평가
백재욱 ( Baek Jae Uk ),김규용 ( Kim Gyu Yong ),윤민호 ( Yoon Min Ho ),황의철 ( Hwang Eui Chul ),남정수 ( Nam Jeong Soo ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.2
As a result of evaluating the spalling properties using a restrained ring-type concrete specimen, in the case of rapid heating, the water vapor pressure rapidly rise and the surface spalling is repeated. In the case of low-speed heating, The water vapor pressure accumulated in the concrete exceeded the limit, and explosive spalling occurred inside.
PP, NY섬유를 혼입한 150MPa 콘크리트의 고온역학적 특성
백재욱 ( Baek Jae-uk ),김규용 ( Kim Gyu-yong ),윤민호 ( Yoon Min-ho ),황의철 ( Hwang Eui-chul ),손민재 ( Son Min-jae ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
Ultra high-strength concrete can prevent spalling by mixed ratio of PP and NY fiber. However, there is a lack of research on the deterioration of strength due to changes in mechanical properties after spalling prevention. In this study, the effect of high temperature on the mechanical properties of 150MPa concrete mixed with PP and NY fiber was evaluated. As a result, mixing PP and NY fiber is judge to be little effect on the mechanical properties of the 150MPa concrete at high temperature.
후크형 강섬유와 PVA섬유를 하이브리드 보강한 시멘트복합체의 인장특성에 미치는 변형속도의 영향
손민재 ( Son Min-jae ),김규용 ( Kim Gyu-yong ),이상규 ( Lee Sang-kyu ),김경태 ( Kim Gyeong-tae ),백재욱 ( Baek Jae-uk ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
In this study, the tensile properties of hybrid fiber reinforced cementitious composites under the high strain rate was evaluated. Experimental results, the HSF1.5PVA0.5 shown the highest tensile strength because the PVA fiber suppressed the micro cracks in the matrix around the hooked steel fiber and improved the pull-out resistance of hooked steel fiber. Thus, DIF of strain capacity and fracture toughness of HSF1.5PVA were greatly improved. Also, the fracture toughness was greatly improved because the tensile stress was slowly decreased after the peak stress by improvement of the pull-out resistance performance of hooked steel fiber at strain rate 10<sup>1</sup>/s.
구속 링형 시험에 의한 PP섬유 혼입 콘크리트의 폭렬 특성 평가
한철환 ( Han Cherl-hwan ),김규용 ( Kim Gyu-yong ),윤민호 ( Yoon Min-ho ),황의철 ( Hwang Eui-chul ),백재욱 ( Baek Jae-uk ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
In this study, the spalling properties of Polypropylene reinforced concrete were evaluated by the restrained ring-type test. As a result of the experiment with the fiber mixture ratio set at 0, 0.15 vol.%, The PP fiber reinforced specimen showed lower water vapor pressure as a whole than the Plain specimen, but the restraint stress was measured to be higher. This is thought to be due to the fact that higher thermal stresses were applied in the PP fiber reinforced test specimen.