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Title |
Effect of Fineness of GGBS on the Hydration and Mechanical Properties in HIGH Performance HVGGBS Cement Paste
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Authors |
최영철(Young Cheol Choi) ; 신동철(Dongcheol Shin) ; 황철성(Chul-Sung Hwang) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.141 |
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Keywords |
GGBS ; 압축강도 ; 분말도 ; 고성능 하이볼륨 슬래그 ; 미소수화열 GGBS ; Compressive strength ; Fineness ; Heat of hydration |
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Abstract |
Recently, lots of researches on concrete with high volume mineral admixtures such as ground granulated blast-furnace slag(GGBS) have been carried out to reduce greenhouse gas. The high volume GGBS concrete has advantages such as low heat, high durability, but it has a limitation in practical field application, especially low strength development in early ages. This study investigated the compressive strength and hydration characteristics of high performanc and volume GGBS cement pastes with low water to binder ratio. The effects of fineness(4,330 cm2/g, 5,320 cm2/g, 6,450 cm2/g, 7650 cm2/g) and replacement(35%, 50%, 65%, 80%) of GGBS on the compressive strength, setting and heat of hydration were analyzed. Experimental results show that the combination of high volume slag cement paste with low water to binder ratio and high fineness GGBS powder can improve the compressive strength at early ages.
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