Architectural research
- 제4권1호
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- Pages.39-44
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- 2002
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- 1229-6163(pISSN)
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- 2383-5575(eISSN)
An Experimental Study on the Properties of Concrete using High Volume of Coal Ash
- Kim, Moo Han (Department of Architectural Engineering, Chungnam National University) ;
- Choi, Se Jin (Department of Architectural Engineering, Chungnam National University)
- 발행 : 2002.12.30
초록
Recently, the coal-ash production has been increased by increase of consumption of electric power. So it is important to secure a reclaimed land from pollution and develop practical application of coal ash. This is an experimental study to compare and analyze the properties of concrete using high volume of coal ash (including fly ash and bottom ash) as a part of fine aggregate. For this purpose, the mix proportions of concrete according to replacement ratio of coal ash (10, 20, 35, 50%) were selected. And then air content, slump, setting time, bleeding content, chloride content, compressive strength and carbonation test were performed. According to test results, it was found that the bleeding content of concrete using the coal ash decreased according to increase of replacement ratio. And the chloride content of concrete using the bottom ash as a part of fine aggregate increased as the replacement ratio of bottom ash increased, but it is satisfied with the total chloride content of concrete recommended by KCI -