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輕量콘크리트의 强度 特性에 관한 實驗的 硏究 : 燒成頁岩 輕量骨材의 사용 In Use of Lightweight Aggregate made from Shale
서치호 건국대학교 1989 學術誌 Vol.33 No.2
This paper describes the results of the test that was carried out to investigate the compressive strength and other physical properties of artificial lightweight concrete with lightweight aggregate made from shale. Analyzing the test results and comparing them with properties of normal concrete. 1. The consistency of lightweight concrete with lightweight aggregate made from shale is governed by the weight of water. 2. The increment of sand aggregate ratio is the most effective with respect to improvement of compressive strength. 3. Based on the experimental observations of this study it is expected density is less 1900 kg/m3, compressive strength is more 285 kg/cm2.
서치호 建國大學校 附設 産業技術硏究所 1990 논문집 Vol.15 No.-
Recent trend toward large scale, high-rise building construction makes it necessary to reduce the self loads of strutural memebers and footings. One way to reduce such loads is reduced the weight of mortar by using low density porous lightweight aggregates. From this point o fview, it is necessary for us to study various kind of characteristics and practical applications concerning the lightweight tendency of mortar in us e of expanded polystyrene beads and perlite. The analysis of the properties of lightweight mortar based on those of lightweight aggregates as presented in this study would lead to an increase in demand for lightweight aggregates.
建築마감材料의 性能評價에 관한 硏究 : 바닥의 要求性能 Performance Requirements for floors
徐致호 建國大學校 附設 産業技術硏究所 1988 논문집 Vol.13 No.-
This paper discusses performance requirements for floors. Performance requirements of floors may be derived from an analysis of the external factors affecting a floor in use. The analysis of external and internal factors as well as the relations between external and internal factors has been carried out on these levels. The selection of flooring materials can be based on the comparison of the performance requirements of floors and the properties of different kinds of flooring materials. The performance requirements also give guidelines for the development of new types of floors and flooring materials. The main purpose of this paper is to give an example of how the ideas of performance analysis can be applied to floors.
서치호,曺鐵鎬,朱京在 건국대학교 부설 산업기술연구소 1987 논문집 Vol.12 No.-
An experimental study was conducted to determine the effects of steel fiber reinforced lightweight concrete with expanded polystyrene beads on the strength and the other physical properties. Four fiber contents, two water-cement ratios, and two weight of cement were used for this study. Analyzing and test results and comparing them with properties of normal concrete. 1. 0.3 percent steel fiber is the most effective with respect to improvement of tensile strength. 2. The consistency of steel fiber reinforced lightweight concrete with expanded polystyrene beads is geverned by the weight of cement. 3. Based on the experimental observations of this study it is expected density is less 1,000 kg/㎥, compressive strength is more 65kg/㎠, tensile strength is more 25kg/㎠. 4. Thermal conductivity increased on the mixture ratio of steel fiber and shows the low thermal conductivity of about 10.7 percent of the normal concrete.
서치호,曺鐵鎬,朱京在 건국대학교 부설 산업기술연구소 1985 논문집 Vol.10 No.-
This paper describes the results of the test that was carried out to investigate the compressive strength and other physical properties of artificial lightweight concrete with expanded polystyrene beads. Analyzing the test results and comparing them with the properties of normal concrete, density in the 500 to 840kg/㎥ range with a compressive strength of 10 to 66kg/㎠. The lightweight concrete with expanded polystyrene beads can be made with any density from about 500 to 1,800kg/㎥ or more. In this range its strength is good in relation to its density. Thermal conductivty of its concrete in a structure is usually 0.191~0.316Kcal/mh˚c which shows a relationship between density and thermal conductivity.
朱京在,李好璡,尹弘澤,서치호 건국대학교 1982 學術誌 Vol.26 No.2
In general most of structure in our country, has steel of SBD 24 combining 180kg/cm2 or 210kg/cm2 of standard compressive strength of concrete. When we consider economical design in structural and practical operation, this paper has estimated steel quantities by combining the design standard strength of steel with those of concrete in reinforced concrete building which has four stories for office and then compared each other. As a result of comparing the quantities of steel according to their combination, it has searched for which combination has consumed less steel and become economic.