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플라이애쉬 콘크리트의 特性에 미치는 굵은 骨材 最大値數의 影響에 관한 實驗的 硏究
김덕현,유영주,이상수,송하영,김을용 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-
In this study, the experiment was carried out to investigate and analyze the influence of coarse aggregate's maximum size and Fly Ash replacements ratio on the properties of concrete. The main experimental variables were water/cement ratio 45 and 65(%), maximum size of coarse aggregate 15, 25 and 40(mm), Fly Ash replacements ratio 0, 10, 20(%). According to the test results, the principal conclusions are summarized as follows. 1) The slump and flow of fresh concrete were found to be higher in the order of maximum size of coarse aggregate 15, 25 and 40(mm), also in the order of Fly Ash replacements ratio 0, 10, 20(%). 2) The compressive strength of hardened concrete were found to be lower in the order of maximum size of coarse aggregate 15, 25 and 40(mm). While, Fly Ash replacements ratio increases in age 7days, showed tendency that compressive strength increases together. but, age 28, 56(day) were showed opposite tendency.
고로슬래그 콘크리트의 特性에 미치는 굵은骨材 配合比의 影響에 관한 實驗的 硏究
김덕현,오영택,이상수,송하영,김을용 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-
In this study, the experiment was carried out to investigate and analyze the influence of coarse aggregate's mix ratio and Blast Furnace Slag replacements ratio on the properties of concrete. The main experimental variables were water/cement ratio 45 and 65(%), coarse aggregate/fine aggregate ratio 90, 130 and 170(%), Blast Furnace Slag replacements ratio 0, 10, 20(%). According to the test results, the principal conclusions are summarized as follows. 1) The slump and flow of fresh concrete of general tendency case of G/S ratio 90, 130(%) according as Blast Furnace Slag replacements ratio increases together slump(flow) increase, but in the case of plain concrete in G/S ratio 170%, displayed opposite tendency. 2) The compressive strength of hardened concrete were found to be lower in the order of G/S ratio 90, 130, 170(%), also in the order of Blast Furnace Slag replacements ratio 10, 20(%) of concrete are better than the plain concrete.
梁山 通度寺 伽藍建築에 關한 硏究(Ⅱ) : Laying Stress on a feature of the space Structure 外部空間 構成의 特性을 中心으로
李東榮,金乙鏞 大田工業大學 1990 한밭대학교 논문집 Vol.7 No.2
It is one of the remarkable charaotaristics of Korean Architecture that the exterion space of a building group is as flexible as the flow of water along with a continuous hierarchal order. The building layout of the temple Tongdosa is an adequate example of it. I have studied the building layout of the temple is various ways of analysis, such as the analysis of visual arrangement, seale and spatial patterns, etc. It has been naticed that even though the building layout seems to be irregular and complicated there is a rythmical regularity well harmonifed with its natural environment. In the view of anthers analytical study, the temple Tongdosa could be regarded as one of the best traditional architecture in Korean.
金乙鏞,尹勝照 大田工業大學 1988 한밭대학교 논문집 Vol.5 No.2
There are tendencies to design and analyze the reinforced concrete structures by the inelastic theory, because the elastic theory has limitations to explain realistic behaviors of the reinforced concrete. This study is aimed to knowing the relationships of load - deflection and rotation of reinforced concrete simple beam. The test considers that the influence of the depth of beam and the amount of reinforcement on deflection behavior of beam. From this study, results are as follows ; 1) The amount of compression reinforcement mainly affects on the slope in descending portion after peak load of the relationships load and deflection. 2) The net tension reinforcement ratio significantly effects the maximum moment and center rotation of flexural members. In case of the net tension reinforcement ratio is same, the maximum moment is Increase with decreasing depth of beam. 3) According to the decreasing net tension reinforcement ratio, the relative rotation of flexural member is decrease. Finally, the deflection of doubly reinforced beam can be diminished more greatly than singly reinforced beam.
金乙鏞 大田開放大學 1985 論文集 Vol.3 No.-
Reverberation gives two difference in transmission of the sound. In case of increasing of that room time in the room, the sound level of that room increases, and In case of low sound level, percentage syllable asticulation can be supplemented. But in case of its inadequate control, it may be the cause of injurious noise as doubleacting over following sound. On the whole reverberation is in proportion to the absorption - meter sabine of the room reverberation attribute is that optimum rever beration can be modulated by controlling the quantity of absorbers and its acting place the purpose of this thesis exist In representing a course of the plan in reverberation for establishing acoustical design in room.