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SPSS를 활용한 플라이애시 혼입 콘크리트의 효율적 배합 제안

Title
SPSS를 활용한 플라이애시 혼입 콘크리트의 효율적 배합 제안
Other Titles
Suggestion of Efficient Mixture of Concrete Containing Fly Ash using SPSS
Author
지남용
Keywords
레디믹스트콘크리트; 플라이애시; 배합; 압축강도; 강도비; 통계분석; Ready Mixed Concrete; Fly Ash; Mix Proportion; Compressive Strength; Strength Ratio; Statistical Analysis
Issue Date
2011-01
Publisher
대한건축학회
Citation
대한건축학회 논문집 (구조계), 2011, 27, P.127-135(9)
Abstract
For efficient mix design, this paper offers following information: the fly ash (FA) replacement ratio in which strength development is the maximum, the range of FA replacement ratio in which the strength of FA concrete is higher than that of ordinary Portland cement (OPC) concrete, and the binder content per unit strength. For these matters, various statistical analyses were performed based on a wide range of mix proportions and a number of strength test results of ready mixed concretes used in eight construction sites. The strength ratio, the ratio of FA concrete to OPC concrete in compressive strength, was expressed as the function of binder-water ratio and FA replacement ratio by multiple linear regression analysis. This equation suggests the range of FA replacement ratios in which strength ratio of 1 or higher can be obtained when binder content of FA concrete is the same as that of OPC concrete. The strength ratio increases with increasing water-binder ratio. As water-binder ratios decrease, the range of FA replacement ratios also decreases. It is desirable that FA concrete should have FA replacement ratio of about 15% to guarantee required average compressive strength using minimum binder contents. In FA replacement ratio of about 15%, the binder content per unit strength is 10.1∼10.6㎏/㎥/㎫ with respect to water-binder ratio. Because the binder content per unit strength is calculated with respect to water-binder ratio and FA replacement, its concept can be used as a means of determination of the binder content in mix design of FA concrete.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE01592161
ISSN
1226-9107
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OFFICE OF ACADEMIC AFFAIRS[S](교무처) > ETC
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