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원준연 ( Won Joon-yuen ),남경용 ( Nam Kyung-yong ) 한국건축시공학회 2021 한국건축시공학회지 Vol.21 No.4
공동주택 입주자들의 생활 수준 향상 및 고품질 기대로 인해 공동주택 하자와 관련된 민원이 매년 증가하고 있다. 그리고 이와 동시에 하자발생 유형 또한 새롭게 변화하고 있다. 이러한 유형 변화를 확인하기 위해 전국 12개 단지 100개 동(9,748세대)을 대상으로 조사하였다. 세대 당 하자 접수 건은 하자 종류의 변화 없이 10년 전보다 대략 1.6배 증가하였다. 기계설비 하자 접수 건의 경우는 10년 전보다 1.4배 증가하였지만 하자 종류의 변화가 발견되었다. 그중 일반 부분(급수, 배수, 수압 등)이 차지하는 비율이 10년 전보다 25%가량 감소하였다. 이는 실내 환경과 관련된 아이템들이 대부분의 신규 공동주택에 필수적으로 적용되어 이와 관련된 하자 종류가 늘어난 까닭이다. 공동주택에 새롭게 적용되는 특화 아이템들이 점차 확대되는 추세로 향후 이와 관련된 하자는 점차 증가할 것으로 예상된다. Due to the improved living standards and the expectation on higher-quality housing of tenements, complaints on the defects in the buildings are increasing every year. Also, the types of flaws are changing. We surveyed one hundred buildings(9,748 households) in 12 complexes across the country to investigate the shifted types. The number of defects received increased by about 1.6 times compared to 10 years ago, while the categories did not change. The report on the malfunctioning mechanical equipment has increased 1.4 times than ten years ago, and the types of the problem changed. The proportion of general parts(water supplement, drainage, water pressure) has decreased about 25% compared to 10 years ago. This is because the items related to the indoor environment become standardized in apartment housing. Therefore the problems related to those have been increased. As the specialized items applied to the tenement building are showing gradual expansion, the defect reports concerning those will also grow.
동절기 단열갱폼으로 인한 경제성 효과 및 투입 원가 분석 연구
원준연,이영도,남경용,Won, Joon-Yuen,Lee, Young-Do,Nam, Kyung-Yong 한국건축시공학회 2018 한국건축시공학회지 Vol.18 No.4
This paper verifies the superiority of warming work in winter by applying the insulation gang-form to the apartment housing site and analyzes the economic feasibility of the application. According to the experimental results, the actual cost of warming work was about 52 million won less than planned, and 160 million won less than the existing average.(Note - The cost of gang form material increased from 260 million won to 310 million won after the change) As a result, the construction cost could be reduced by about 110 million won. As the costs of warming work can change depending on the number of floors, the building number, and the area of each site, it is deemed necessary to conduct a thorough review in advance at the site where the cost of warming work is to be applied. 본 논문은 단열갱폼의 공동주택현장 적용을 통해 단열갱폼 동절기 보양우수성을 확인하고, 현장 적용에 따른 경제적 타당성을 분석하고 있다. 실험결과에 따르면 실제 보양투입 비용은 사전계획대비 약 5천 2백만 원을 절감하였으며, 기존 일반갱폼대비 약 1억 6천만 원을 절감하였다.(참고 - 변경전 갱폼 자재비는 2억 6천만 원에서 변경 후 3억 1천만 원으로 약 5천만 원 증가함) 결과적으로 단열갱폼으로 변경하여 약 1.1억 원 가량의 공사비를 절감할 수 있었다. 현장마다 층수, 동수, 면적이 달라짐에 따라 보양공사비가 변경될 수 있으니 단열갱폼 적용 예정인 현장에서는 사전에 충분한 검토가 이루어져야 할 것으로 판단된다.
강인선 ( Kang In-seon ),원준연 ( Won Joon-yuen ),김태희 ( Kim Tae-hui ),김성덕 ( Kim Seong-deok ),최석 ( Choi Seok ),남경용 ( Nam Kyung-yong ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
This paper examines the efficiency of the application of conventional and insulated gang forms for curing and protection of concrete by comparing the amount of electric energy required therefor. In addition, a thermal vision camera was used to identify heat loss from surfaces of the gang forms after each placement of concrete. Experimental results, show that the heat loss at the submerged temperature was large at the submerged surface due to the large calorific value at the surface of the mold. The insulated gang form had some heat loss in the horizontal bars. In the case of adiabatic reforming, the pattern shows a constant calorific value over time. In conclusion, the insulation performance is better than that of general gang form.
경질우레탄 보드를 접착한 갱폼 사용에 따른 콘크리트의 온도이력 및 강도발현 특성
남경용(Nam, Kyung-Yong),원준연(Won, Joon-Yuen),전재열(Chun, Jae-Youl),정상진(Jung, Sang-Jin) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.7
This paper has fabricated insulation gang-form adhering general gang-form to the polyisocyanurate board and analyzed type of members, temperature record by locations and strength development after placing the concrete, in order to ensure efficient concrete quality under cold weather. According to our test, we can see that general gang-form member with curing under the same conditions as the actual field has a trend of constantly decreasing concrete temperature regardless to surface or central area due to rapid outdoor air temperature reduction, while in the case of insulation gang-from I and II, temperature increased up to around 25℃ after 12 hours under rapid outdoor air temperature change and temperature distribution did not appear large separation according to hydration reaction measurement locations. In addition, results of measurement for temperature records on weak insulation area by types of gang-forms showed that the temperature record distribution on the form tie surface and horizontal bar surface of angle bar has generally similar trend as the temperature records on the surface of the insulation gang-form, while corner area of the insulation gang-form did not have large insulation effect. It is determined that it requires additional curing measure for the weak corner area of the insulation gang-form in the future.