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황금식(Hwang Geum-Sic),박찬기(Park Chan-Gi),최강진(Choi Kang-Jin),장계호(Jang Gye-Ho) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.1
The major objective of this study was evaluated mechanical properties and chemical resistance of five types of premix type wet process polymer mortar. Also, the effects of two type construction methods were studied. The results of the test of wet process sprayed method were compared with previous hand method. For five type pre mix type polymer mortar, test results show that wet process sprayed method had shown good performance in all of mechanical properties and chemical resistance than hand method. Specially, chemical resistance test results indicate excellent performance.
황금식 ( Hwang Geum-sic ),박찬기 ( Park Chan-gi ),최강진 ( Choi Kang-jin ),장계호 ( Jang Gye-ho ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
The major objective of this study was evaluated mechanical properties and chemical resistance of five types of premix type wet process polymer mortar. Also, the effects of two type construction methods were studied. The results of the test of wet process sprayed method were compared with previous hand method. For five type pre mix type polymer mortar, test results show that wet process sprayed method had shown good performance in all of mechanical properties and chemical resistance than hand method. Specially, chemical resistance test results indicate excellent performance.
FRP Bar 콘크리트 보의 휨보강근비 변화에 따른 콘크리트 전단강도
노경배,진치섭,장희석,김희성,황금식 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 논문집 Vol.10 No.2
휨철근 대체재로 FRP Bar를 사용한 콘크리트 보에 대하여 휨보강근비의 변화에 따른 콘크리트의 전단강도를 일련의 콘크리트 보 실험을 통하여 조사하였다. 실험 결과, 콘크리트의 전단강도는 RC보의 경우보다는 낮은 값으로 나타났지만, 휨보강근비가 증가함에 따라 전단강도도 증가하는 것으로 분석되었다. 문헌에 제안된 식과 실험결과의 회귀분석을 이용하여 FRP Bar의 종류 및 휨보강근비를 고려한 전단강도보정계수를 제안하였다. The concrete shear strength of FRP Bar reinforced concrete beam according to the variation of flexural reinforcement ratio was investigated. A number of experimental result showed that the concrete shear strength was lower than that of RC beam, but it was increased according to the increasement of reinforcement ratio. Shear strength correction factors considering the kind and reinforcement ratio of FRP Bar was proposed using the proposed formula in the literature and regression analysis of the experimental result.
원종필 ( Won Jong Pil ),황금식 ( Hwang Keum Sic ),윤종환 ( Yoon Jong Hwan ),장필성 ( Jang Pil Sung ),김명균 ( Kim Myung Koun ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
Plastic shrinkage cracking occurs at the exposed surfaces of freshly placed concrete due to consolidation of the concrete mass and rapid evaporation of water from the surface. This so-called shrinkage cracking is a major concern for concrete, especially for flat structural such as pavement, slabs for industrial factories and walls. This study has been performed to obtain the plastic shrinkage properties of hydrophilic fiber reinforced mortar and concrete. The results of tests of the hydrophilic fibers were compared with plain and polypropylene fibers. Test results indicated that hydrophilic poly vinylalcohol fiber reinforcement showed an ability to reduce the total crack area and maximum crack width significantly( as compared to plain and polypropylene fiber reinforcement).