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http://dx.doi.org/10.5345/JKIBC.2013.13.6.602

Effect of Fine Particle Cement and Recycled Aggregates as Alkali Activator on the Engineering Properties and Micro-Structure of High Volume Blast Furnace Slag Concrete  

Han, Min-Cheol (Department of Architectural Engineering, Cheongju University)
Lee, Hyang-Jae (Department of Architectural Engineering, Cheongju University)
Han, Cheon-Goo (Department of Architectural Engineering, Cheongju University)
Publication Information
Journal of the Korea Institute of Building Construction / v.13, no.6, 2013 , pp. 602-608 More about this Journal
Abstract
The aim of this study is to investigate experimentally the effect of the combination of fine particle cement with high Blaine fineness (FC) and recycled aggregates on the engineering properties and micro structure of high volume blast furnace slag (BS) concrete with 75% BS and 21 MPa. FC manufactured by particle classification at the plant with Blaine fineness of more than $7000cm^2/g$ was used as additional alkali activator for high volume blast furnace slag concrete made with recycled fine and coarse aggregates. FC was replaced by 15, 20 and 25% OPC. Test results showed that the incorporation of FC resulted in an increase in the compressive strength compared to BS concrete without FC by as much as 30% due to accelerated hydration and associated latent hydraulic reaction. It was found that the use of FC and recycled aggregates played an important role in activating BS for high volume BS concrete by offering sufficient alkali.
Keywords
blast furnace slag; recycled aggregate; fine particle cement; alkali-activator;
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Times Cited By KSCI : 5  (Citation Analysis)
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