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공동주택에서의 건식 경량벽체 실용화 연구 : 드라이 월 시스템의 수평하중 저항성 및 내충격성을 중심으로
윤상천 경주대학교 지역개발연구소 2001 地域開發論叢 Vol.- No.4
This study is to assess the partition wall's resistance capability against cracks or distortions caused by outside impact including human body pressure as well as general objects. This test aims at providing possible usage of wall systems through analysing composition method's impact on performance for partition wall at home after research on the performance criteria and test methods for the Horizontal and Impact ldad resistance at home and abroad. The test results show that the performance is up to the composition of components of gypsum board's partition fall. In order words, more resistance can be obtained under the following condition : the more narrow the distance between steel studs is and the thicker the gypsum board's thickness when the distance between studs remain the same.
철근의 부식율이 철근과 콘크리트의 부착강도에 미치는 영향
윤상천 경주대학교 건설환경연구소 2003 建設環境論叢 Vol.- No.5
The social trouble to the durability of concrete rises recently because the embedded rebar corrosion influences concrete structures to deteriorate structural capacity. And also, the rebar corrosion causes crack of concrete, decrease of steel section and separation of covering concrete. In the result, the bond strength of concrete and embedded rebar decreases, which causes deterioration of the structure behavior in reinforced concrete. In this study, the relation of bond strength and bond-slip was understood to evaluate capacity deterioration of reinforced concrete, and experiments were carried out by compressive strength and embedded rebar condition in the rebar corrosion rate.
윤상천,양성철 한국구조물진단유지관리공학회 2013 한국구조물진단유지관리공학회 논문집 Vol.17 No.3
본 연구에서는 원적외선의 방출을 증진시켜 쾌적한 실내 환경을 조성시키며 아울러 비중이 높은 재료를 사용하여 층간소음을 저감시키기 위한 방안으로서 건축용 친환경 바닥 마감재에 자철석 잔골재를 사용하는 모르터의 기초물성 연구를 수행하였다. 실험에 사용된 모르터의 배합은 자철석 잔골재를 자연사로 0, 20, 40, 60, 100% 치환하였다. 먼저 원적외선 방출성능으로서 방사율과 방사에너지를 측정하여 KICM의 기준을 훨씬 상회하는 결과를 얻었다. 단위용적질량 압축강도 실험결과 치환율이 증가함에 따라 선형적으로 증가하는 결과를 얻었다. 그러나 건조수축 시험결과 자철석 잔골재의 치환율이 증가함에 따라 건조수축 변화율이 기준 시험체 대비 급격하게 증가하는 것으로 나타나 향후 이를 해결하기 위한 방안이 강구되어야 함을 알 수 있었다. In this project a preliminary experimental research work was done to apply mortars containing magnetite as fine aggregates unto floor finishing materials in order to make indoor environment eco-friendly and to have noiseproof control between floors. Crushed magnetites were substituted as sands in the mix design with a range of 0, 20, 40, 60, 100%. First far-infrared radiation tests to determine emissivity and emission power were done in accordance with the KICM test standard and an outstanding result was obtained. Density and compressive strength test results also showed that as the substitution increases, test values increase in a linear trend. However dry shrinkage test results revealed that as the substitution increases, shrinkage strain also increases. To clearly seek a solution about this problem, more experimental works should be done on oncoming experimental program.
현장 콘크리트의 압축강도 관리를 위한 강도추정식 개발에 관한 연구
윤상천 경주대학교 건설환경연구소 2002 建設環境論叢 Vol.- No.4
There are only a few tests to ensure concrete quality before placing at construction site; One is slump test for workability, the other is air content test for durability. The concrete compressive strength is the one of important factors to influence on concrete quality, and can be evaluated at the 28 days after placing. Some methods on the prediction of concrete strength at early age have been introduced for concrete quality management, but such methods are time consuming, and required special expertise. The purpose of this study is to suggest the equation for 28-day concrete compressive strength prediction to control quality control of ready mixed concrete, and the multiple regression analysis was conducted between concrete constituents and compressive strengths on basis of data acquired at the construction site.
공동주택에서 Infill간 Interface의 요구성능에 관한 연구
윤상천 경주대학교 건설환경연구소 2009 建設環境論叢 Vol.- No.11
In Korea, to satisfy the demands of residents becomes one of critical issues due to the rapid change of their life style and the durability concern of reinforced concrete structures. To solve this, lots of studies have been made aiming to manifest an idea of 'Open Building' to those apartments where durability and compatibility were both considered. This can be classified into two different concepts -Support (structural form) and Infill (internal form involving spatial partition). However, the copulation occurs when the two different Infills are met together. The focal point of this research is on defining such inclusive ideas -a type of components that can be copulated, how those conditions are made and its systematical standard - by the Interface. In this research, Performance requirements for the infills of building elements were suggested through the reviews on the domestic and foreign building codes. And also the levels and grades of required performance for interfaces of building elements were suggested.