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이규선 ( Lee Kyu-seon ),정재원 ( Jeong Jae-won ),이창용 ( Lee Chang-yong ),이용택 ( Lee Yong-taeg ),김승훈 ( Kim Seung-hun ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
The purpose of this study is to investigate the bond characteristics of deformed steel bar for concrete with bamboo activated carbon. Pullout test was conducted for specimens with various replacement ratio (0%, 10%, 20%) of bamboo activated carbon. Test results show that it need to use a concrete with a replacement ratio of bamboo activated carbon of 10% or less to retain proper bond strength.
이규선(Lee, Kyu-Sun),이근안(Lee, Geun-An),이종섭(Lee, Jong Sup),이영선(Lee, Young-Seon),김정배(Kim, Jeongbae) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.11
Two experimental apparatus, for measuring the COP of air-conditioning cycle and estimating the reliabilities applying the nano-fluids into the cycle, were designed and made. The air-conditioning cycle components in the apparatus are purchased like as YF hybrid model. The apparatus for measuring the COP of air-conditioning cycle is designed to measure the compressor power and evaporator heat capacity. So, the compressor power will measure using power meter and the evaporator heat capacity have to measure the inlet-outlet temperature, pressure, and mass flow rate using the flow meter. And the nano-fluids to apply the cycle were chosen as Al2O3, TiO2, and CuO. So, the apparatus for estimating the reliabilities applying the nano-fluids into the cycle was consisted of 4 cycles, respectively for base and three nano-fluids. The 2nd apparatus will operate during about 2.2 years to reveal the performance characteristics including compressor power and running results, temperature and pressure.
이규선 ( Lee Kyu-seon ),정재원 ( Jeong Jae-won ),이창용 ( Lee Chang-yong ),이용택 ( Lee Yong-taeg ),김승훈 ( Kim Seung-hun ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
The purpose of this study is to investigate the compressive strengths of charcoal concrete. Compression experiment was conducted for specimens with various replacement ratio (0%, 10%, 20%) of charcoal. From the test results, it was shown that the compressive strengths of charcoal concrete were reduced with increasing replacement ratio of charcoal.