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콘크리트의 工學的 特性에 미치는 잔骨材 粒度分布의 影響에 관한 實驗的 硏究
柳顯紀 충주대학교 1990 한국교통대학교 논문집 Vol.24 No.-
The properties of concrete is mainly effected the grading of fine aggregate. There fore this study is designed for analyzing the properties of concrete according to the fine aggregate grading such as uniform, gap and continously grading: and is aimed for presenting the reference data on the practical use. The result as follows ; Uniform grading : ??=122.53 C/W-0.9 (R=0.9188) Gap Grading : ??=177.63 C/W-77.3 (R=0.9576) Continously Grading : ??=83.01 C/W+101.1 (R=0.9385)
柳顯紀 충주대학교 1993 한국교통대학교 논문집 Vol.27 No.-
To analyize the use of mine-waste as the aggregate is very important on the shortage of aggregate recorces. Therefore this study presents the reference data in order to use as aggregate of concrete with mine-waste in Chung-Buk area and this report is aimed to analyze the actual condition by making a question and survey. And, this study is designed for analysing and for presenting the referance data according to the aggregate of concrete.
鑛山廢棄物을 骨材로 이용한 시멘트 모르터에 관한 實驗的 硏究
柳顯紀 忠州大學校 1996 한국교통대학교 논문집 Vol.31 No.2
To use the waste in complementing the insufficient amounts of natural aggregate resource the provides the great effect. So, this study analyzes and experiments the research on the actual condition, the productive amounts of mine--waste and the possibility to be applied, focused on mines in Chung-buk area as a basic research in using mine-waste for the aggregate of concrete. The results are as follow : In analyzing and experimenting mortar and concrete application of mine-waste, by suggesting the evaluation method called the index of flow, strength, we could evaluate the possibility for aggregate. But even though physical characteristics in some mine were good, it was evaluated as the faulty result by this method in some mines.
단위 팽창재량 및 양생방법에 따른 팽창 콘크리트의 특성에 관한 연구
柳顯紀 충주대 2000 한국교통대학교 논문집 Vol.35 No.2
When the expansive additives are used in concrete to reduce the shrinkage cracking, it shows variable properties with the curing method and curing temperature.Therefore, in this study, the experiments are perfomed to present the expansion of concrete by varying the unit additions of expansive additives and the curing method.According to the test results, the order of expansion by curing method, which is caused by hydration heat of concrete, is follows; curing at air after curing at water for 7 days > curing at air Concrete using expansive additives shows that high expansion is place with rise of temperature.
잔骨材의 種類 및 粒度分布에 따른 시멘트몰탈의 特性分析에 關한 硏究
柳顯紀 忠州大學校 1987 한국교통대학교 논문집 Vol.20 No.2
This is an experimental study by consistent and gap grading distribution with the same over or under size value, middle grading, and the same middle grading and fineness moduls within the standard grading limit regulated by fine aggregate. The results are as follows : 1. It showed that the greater is the fineness moduls, the greater is the flow value 2. Compressive strength is much the same as flow value tendency, and the greater is the flow value, the greater is the compressive strength on the whole. 3. Cpmpressive strength varied as curing age showed the greatest at grading ③ removed 0.6-1.2 ㎜ grains in lean-mix.
鑛山廢棄物을 굵은 骨材로 이용한 콘크리트의 力學的 特性分析
柳顯紀 충주대학교 1997 한국교통대학교 논문집 Vol.32 No.2
This study analyzes and expriments the research on the actual condition, the productive amounts of mine-waste and the possibility to be applied, focused on mines in Chung-buk area as a basic research in using mine-waste for the aggregate of concrete. The results in concrete application of mine-waste by suggesting the evalution method called for the index of slump strength, and we could evaluate the possibility for coarse aggregate. But even though physical characteristics in some mines were good, it was evaluated as the faulty result by this method in some mines.