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고속 발사체 충격을 받은 시멘트 복합체의 철근보강에 따른 파괴 특성에 관한 실험적 연구
석원균 ( Seok Won-kyun ),김규용 ( Kim Gyu-yong ),남정수 ( Nam Jeong-soo ),이예찬 ( Lee Yae-chan ),전현수 ( Jeon Hyun-soo ),김영선 ( Kim Young-sun ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.1
With reent changes in energy sources, infrastructure facilities for energy charging are increasing around living areas. The infrastructure facilities have a slight possibility of explosion, and for this research on protection is needed. In this study, the performance of the reinforcement type is reviewed by examining the destructive properties after applying the impact by the high-velocity projectile to the cement composite to which various reinforcement methods are applied.
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방호 패널의 구성 재료 및 설치 조건에 따른 내충격 특성에 관한 연구
석원균 ( Seok Won-kyun ),김영선 ( Kim Young-sun ),이예찬 ( Lee Yae-chan ),남정수 ( Nam Jeong-soo ),김규용 ( Kim Gyu-yong ) 한국건축시공학회 2023 한국건축시공학회지 Vol.23 No.6
This study suggested that protective panels should be installed as sacrificial members as a safety design method for structures with potential explosions such as hydrogen charging stations to minimize direct damage to the structure and have resilience. To this end, the focus of the experiment is on quantitatively evaluating the impact of the structure when the protection panel is installed closely or spaced apart from the structure in a high-speed collision situation of the projectile. The experimental design used steel plates instead of concrete structural members mainly used in the past for excellent reproducibility, and the impact of structural members was compared and analyzed through deformation differences on the back of the steel plate. In addition, the impact of changes in the physical properties of the elastic body used as a separation material for the protective member and the difference in shock wave transmission time according to the protective member and the elastic body on the structural member was investigated.
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물시멘트비 및 단위수량에 따른 순환콘크리트의 강도 특성과 내구성능에 관한 실험적 연구
김영선,김정진,석원균,이주호,김규용,Kim, Young-Sun,Kim, Jung-Jin,Seok, Won-Kyun,Lee, Joo-Ho,Kim, Gyu-Yong 한국건설순환자원학회 2011 한국건설순환자원학회지 Vol.6 No.3
To resolve the problem which is demand and supply imbalance of fine aggregate by the shortage of natural fine aggregate and the environment regulations, the studies for the application of recycled fine aggregate made from waste concrete have been recently carried out. The objective of this study is to shed light on the mechanical properties and durability performance of concrete using recycle fine aggregate with various water to cement ratios and unit water contents. And it is intend to propose the fundamental data for structural application of recycled concrete. In particular, the effects according to the variations of water to cement ratios and unit water contents in recycled concrete with recycled fine aggregate replacement of 100 percent are discussed by the test results, such as air content, slump, time of set, compressive strength, tensile strength, carbonation, chloride penetration. 천연골재의 고갈 및 환경규제에 의한 건설용 잔골재의 수급불균형 문제를 해결하기 위해 폐기콘크리트로부터 생산된 순환잔골재의 적용성을 위한 연구들이 수행되어 왔다. 본 연구의 목적은 W/C 및 단위수량의 변화에 따른 순환잔골재를 사용한 콘크리트의 역학적 특성 및 내구성능에 관한 이해를 높이는 것이다. 또한, 순환콘크리트의 구조적 적용을 위한 기초자료를 제시하는데 의미가 있다. 특히, 순환잔골재를 100% 대체한 순환콘크리트에 대하여 W/C 및 단위수량의 변화에 따른 영향은 공기량, 슬럼프, 응결시간, 압축강도, 인장강도, 탄산화 및 염화물 침투와 같은 항목에 대한 시험결과에 의해 분석 제시되었다.
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고강도 콘크리트 강도별 염분확산계수 및 편차에 관한 연구
박동천 ( Park Dong-cheon ),석원균 ( Seok Won-kyun ),전현수 ( Jeon Hyun-soo ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.2
High-strength concrete is used for building durability on the coast. It is common to order and produce the concrete from several ready mixed concrete companies. The concrete in Busan was also commissioned by 12 ready mixed concrete companies. The compressive strength and salt diffusion coefficient were measured. The average value and deviation were analyzed.
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정연백(Jung Yeon-Back),석원균(Seok Won-Kyun),박순전(Park Soon-Jeon) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
As the building becomes super-higher recently, it is necessary to measure horizontal movement of building precisely. The more the altitude of the building is highly, the more method using total station is a limit of measurement. The method using total station is impossible while it rains and it is difficult to acquire the visual field for measurement if the altitude of the building is more high. Consequently research laid the plan to overcome the critical point of measurement technique using total station. It evaluated the construction application possibility in the filed with development of system to manage the horizontal movement of the formwork using GPS. Analysis result of measuring data in the filed at once is a within the error scope 10㎜ with horizontality. So it will be able to secure the reliability of the measuring coordinate point to use GPS. If reducing establishment of a measuring equipment and a data processing velocity, it will be able to secure more accurate and quick data. It is possible to apply horizontal movement management in construction building using GPS and it will be able to overcome vertical degree management limitation of construction building using total station in the case of super high-rise building project through out GPS.
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바닥충격음 차단을 위한 뜬바닥 구조의 진동응답특성에 관한 실험적 연구
최경석 ( Choi Kyung-suk ),석원균 ( Seok Won-kyun ),목지욱 ( Mauk Ji-wook ),신이섭 ( Shin Yi-seop ),김형준 ( Kim Hyung-joon ),김정진 ( Kim Jeong-jin ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
A floating floor generally consists of mortar bed separated from the structural RC slab by a continuous resilient layer. It is known that the floating floors are a type of vibration-isolation system to improve the impact sound insulation performance. However, some researchers have demonstrated that the amplification of vibration response at a specific range of frequencies results in an increase in the impact sound level. This study carried out the forced vibration tests to obtain the frequency response function (FRF) of a floating floor compared with a bare RC slab. Test results shows that the additional peak occur in vibrational spectrum of the floating floor except natural vibration modes of the bare RC slab. This is because the relatively flexible resilient material and mass of the mortar bed offer an additional degree of freedom in the structural system. Therefore, it could be efficient for reduction of floor impact vibration and noise to control the additional mode frequency and response of floating floors.
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