건축용 재료로서 기능성 제올라이트 모르터의 실내공기 오염물질 흡착성능 분석

임남기,이종일,김효열,허재원 대한건축학회 2007 大韓建築學會論文集 : 構造系 Vol.23 No.6

In a traditional society, building materials were developed fulfilling the requirements of conveniences and functionalities such as safety, construction work, durability and economical efficiency. However, as the concern about environmental or users’ health issues has been elevated recently, research and development about eco-friendly material are also vigorously promoted further. In addition, thanks to the steady growth of domestic industry, the amount of discharged industrial by-product is getting increasing. However, its recycling rate remains at low level as most industrial by-products are filled up in the land, which worsen the environmental pollution. Zeolite powder is cement admixture and is expected to have constraining effect of factors causing symptoms of inhabitants in a new house and alleviates the amount of discharged harmful elements emitted from hardened cement.

콘크리트용 골재로서 열병합 발전소용 열원 폐재 파쇄물의 활용성에 관한 연구

임남기,김종식,정환철,김효열,허재원 대한건축학회지회연합회 2006 대한건축학회연합논문집 Vol.8 No.4

This study is as a part of the new disposal and recycling plans of heat-resource waste of Daegu dyeing industrial center. We tried to examine applicable possibility of crushed thing(waste aggregate) as aggregates for mortar and concrete. To examine applicable possibility of waste aggregate as a lightweight-aggregate for concrete and mortar, we carried this study by mainly property examination of concrete according to replacement ratio of waste aggregate. We tested out slump, unit weight, compressive strength and test according to replacement ratio of waste aggregate. As the results of that, if we use waste aggregate, lightweight of concrete and mortar will be possible. Specially it shows a strength improvement effect of cement hardening according to using this so it is judged that applicable possibility as aggregate for concrete and mortar is very excellent.

콘크리트 구조물의 유지관리 합리화와 건전도 진단 기술

임남기,정상진 한국콘크리트학회 1996 콘크리트학회지 Vol.8 No.1

골조형 주거 건물에서의 Deck Plate 대체형 목제 시스템 거푸집 적용성 연구

임남기,허재원,신운식 대한건축학회지회연합회 2006 대한건축학회연합논문집 Vol.8 No.3

설계 건축성/시공성 실행의 제도적 반영을 통한 건축산업의 국제 경쟁력 향상 방안

임남기,손영진,Im, Nam-Gi,Son, Yeong-Jin 한국건설관리학회 2014 건설관리 : 한국건설관리학회 학회지 Vol.15 No.1

철근콘크리트보에서의 개량 전단보강근의 작업성 및 경제성 평가

임남기,료효개 대한건축학회지회연합회 2020 대한건축학회연합논문집 Vol.22 No.3

As the structural design method has been changed from the elastic strength design method to the ultimate strength design method, the number of shear reinforcing bars increased greatly. In this paper, we propose a method of arranging a large number of legs into two. With this method, we analyze the Workability & Economic Efficiency, economic feasibility, and inner force of the main bars and concluded as follows. First, 3 ~ 6 legs of shear reinforcement may show no problem in the drawing, but when the upper bar concentrated at the end of the beam is complex, the 90° & 135° hook must anchor the upper and lower reinforcement bars. This method needs to be improved because various expedient have occurred due to poor constructability and poor workability for hanging a 90 ° hook on the upper bar by hooking the lower bar upward. Second, by reorganizing the existing number of shear reinforcing bars into two and arranging them, and therefore by drastically reducing the total installation work, the amount of rebar can be reduced by up to 26%. Third, by developing a simplified detail and using D10 / 2 section on the lower bar, an increase in the bending strength of the girder was found to occur 10~24%. 본 연구에서는 설계법의 변경으로 전단보강근 개수가 다수여서 어려운 배근상의 문제점을 해결하기 위한 개량 전단 보강근을 개발하여 작업성 및 경제성, 노무비, 구조내력 등을 검토하여 다음과 같은 결론을 얻었다. 첫째, 전단보강근의 다리수 3~6개는 도면상으로는 문제가 없어 보이지만 시공상 보의 단부에 집중된 상부근이 복잡한 배근 구간에서 추가로 보의 내부에 전단보강근을 설치하려면 하부근에 135° 후크를 걸어 상부근에 90° 후크를 고정 하기에는 공간의 협소와 하부근의 고정도가 높아 끌어올려야 하는 등 작업성이 불량하여 다양한 편법이 발생하고 있어 개선이 필요한 상황이다. 둘째, 다수로 배치된 전단보강근 개수를 2개로 통합하여 정리하면 전체 설치공수가 50%이상 절감되고 철근량도 20~26% 감소시킬 수 있어 작업성과 품질관리에 유리할 것으로 판단된다. 셋째, 간소화된 디테일을 개발하여 하부단면에 D10/2을 사용함으로써 하부 주근의 내력 증가가 10~24% 발생하는 것으로 나타나 추가적 효율성 또한 높은 것으로 나타났다.

발간사

임남기 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표회 논문집 Vol.21 No.2

개정 콘크리트 탄산화 내구성 설계기준의 적용상 문제점 분석

임남기 한국건축시공학회 2023 한국건축시공학회지 Vol.23 No.3

In this research, we embarked on a meticulous analysis of the challenges inherent in real-worldscenarios relating to the durability design standards of engineered concrete structures and theassessment of carbonation durability in concrete guidelines. Our investigation brought to lightsubstantial issues concerning constructability and quality assurance. The genesis of these problems isthe exclusive application of prescribed strength to exterior walls, neglecting other elements tofacilitate smoother licensing procedures. While this methodology aims to mitigate financial constraintsin alignment with enhanced standards, it invariably invites complications. Furthermore, it is imperativeto resolve the uncertainty surrounding durability evaluations by establishing a clear and definitiveobjective. Alongside this, actionable steps must be formulated to forestall the emergence of fissuresbetween the floors of residential buildings, particularly apartment complexes. It is equally essential totackle issues connected to application by devising a comprehensive management strategy for potentialcracking during the phase of maintenance. 변경된 콘크리트 구조 내구성 설계기준과 콘크리트공사표준시방서에 규정된 탄산화에 대한 내구성평가와 관련된 사례를 조사하여 분석하고 실무적인 문제점을 분석한 결과 갑작스런 기준의 강화에 따른 경제적 부담이 높아졌음에도 인허가심의 과정에서의 우려로 외벽만 규정된 압축강도를 적용하고 나머지 구간에는 기존의 강도를 적용함으로써 시공성이 아주 불량해지고, 품질관리상 큰 부담이 있으며, 내구성평가기준이 모호한 한계를 극복할 수 있도록 사례를 제공하여야 할 것이며,내구성을 확보대상을 명확히 하며, 공동주택에서 관행적인 층간 균열의 발생을 원천적으로 차단할 대책과 함께 유지관리단계의 균열관리 또한 규정에 반영하는 등 지난 2년간의 적용상 문제점을 종합적으로 분석하여 개정보완이 필요하다.

흰쥐에서 경부 교감신경절제술이 안압의 일차변동에 미치는 영향

임남기,김태형,송준경,유지명.Nam Kee Lim. M.D.. Tae Hyung Kim. M.D.. Joon Kyeong Song. M.D.. Ji Myong Yoo. M.D. 대한안과학회 2008 대한안과학회지 Vol.49 No.11

Purpose: The present study was undertaken to determine the 24-hour pattern of intraocular pressure (IOP), and to reveal the effect of unilateral decentralization on circardian rhythm of IOP in eyes of rats. Methods: Nine male Sprague-Dawley rats were exposed to a 12-hour light/dark cycle for 3 weeks. 24-hours IOP pattern was measured at six time points (8, 12, 16, 20, 24, and 4 circardian time) by Tonopen XL tonometer in awake state. After unilateral sympathectomy (cervical ganglionectomy), IOP measurements were performed at the same time points on post-operation 1, 2, 3, and 4 weeks. Results: 24-hour IOP pattern of rats showed a rhythmic pattern that appeared to be sinusoidal with 12-hour light/dark cycle. IOPs were low during the light phase and high during dark phase. After unilateral sympathectomy, the circardian rhythm of IOP was maintained in control eyes. But in sympathecotmized eyes, the circardian thythm of IOP was loss. Conclusions: These results show that sympathetic nervous systems contribute to the circardian rhythm of IOP in rats. J Korean Ophthalmol Soc 2008;49(11):1839-1844

필러겸용 스포터로 지지되는 전구간 알루미늄 슬래브 거푸집의 저소음 안전낙하 공법개발 및 적용연구

임남기 한국건축시공학회 2024 한국건축시공학회지 Vol.24 No.2

국내외 건설현장에서 사용빈도가 급격히 증가하고 있는 슬래브용 알루미늄 폼은 탈형시 바닥으로 그대로 떨어뜨리는 경우가 많아 소음으로 인한 주변 민원이 발생하고, 높은 위치에서 떨어지면서 형틀이 변형되거나 바닥에서 튀어 오로면서 주변 인부들에게 상해를 입히기도 하여 중대재해처벌법이 강화되는 현실에서 개선이 절실한 상황이다. 이에 본 연구에서는공동주택의 1세대 슬래브 거푸집 전체가 동시에 작업자가 펼친 손이 닿는 위치까지 안전하게 낙하되면 자유롭게 분해하여다음 층으로 인양할 수 있게 함으로써 안전성, 품질, 경제성, 공정이 개선된 필러서포터 존치형 공법으로써 슬래브의 처짐문제 해결 등의 장점을 확인되고 건설신기술을 획득하였으므로 적극적인 시장개척을 통한 적용 활성화가 가능할 것으로 판단된다. The widespread adoption of aluminum slab formwork in modern construction, evident in bothdomestic and international projects, offers numerous advantages. However, a critical challengepersists regarding the dismantling process for these slabs. The current industry standard involvesdropping the slabs to the ground floor upon removal. This practice raises several concerns, notably thegeneration of significant noise pollution that disrupts nearby communities. More importantly, the riskof worker injuries due to falls from height during the dismantling process is a serious safety hazard. Additionally, the impact from dropping the slabs can damage the aluminum itself, leading to increasedreplacement costs. These drawbacks necessitate the exploration of alternative dismantling techniquesthat prioritize worker safety, material sustainability, and overall process efficiency. Accordingly, in thisstudy, when the entire first-generation slab formwork of an apartment house is simultaneouslylowered to a reachable position for workers, it is then disassembled and lifted for transport to the nextfloor. This approach has the potential to demonstrate improvements in safety, quality, economy, andprocess efficiency