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Title |
Material Properties of Concrete Produced with Limestone Blended Cement
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Authors |
방진욱(Jin-Wook Bang) ; 권성준(Seung-Jun Kwon) ; 신경준(Kyung-Joon Shin) ; 정우정(Woo-Jung Chung) ; 김윤용(Yun-Yong Kim) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.2.125 |
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Keywords |
석회석 미분말 ; 시멘트 혼입률 ; 보통 포틀랜드 시멘트 ; 굳지 않은 콘크리트 ; 굳은 콘크리트 Limestone powder ; Cement content ; Ordinary portland cement ; Fresh concrete ; Hardened concrete |
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Abstract |
This paper presents an experimental investigation in order to evaluate fresh and hardened properties of LP (Limestone Powder) blended cement concrete. The cement contents of the mixtures are replaced by LP in the range of 10%, 15%, 25%, and 35%, while a control mixture is prepared with only OPC (Ordinary Portland Cement). The fresh concrete properties like slump and air content are similar to those of control mixture up to 35% of replacement ratio of LP, however a delay in setting time is evaluated. The hardened properties including compressive strength, flexural strength, and rapid freezing and thawing resistance shows similar results of control mixture up to 15% of replacement. Relatively lower strength development is evaluated over 25% replacement of LP. For accelerated carbonation test, resistance to carbonation rapidly decreases with increasing LP replacement ratio due to the limited amount of Ca(OH)2. From the study, LP replacement under 15% can be adopted considering reduction of strength and resistance to carbonation.
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