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http://dx.doi.org/10.5345/JKIBC.2012.12.4.393

An Experimental Study on the Carbonation and Drying Shrinkage of Concrete Using High Volumes of Ground Granulated Blast-furnace Slag  

Ryu, Dong-Woo (Department of Architectural Engineering, Daejin University)
Kim, Woo-Jae (Research & Engineering Division R&D CENTER, POSCO E&C)
Yang, Wan-Hee (Intchem Co., Ltd.)
Park, Dong-Cheol (Intchem Co., Ltd.)
Publication Information
Journal of the Korea Institute of Building Construction / v.12, no.4, 2012 , pp. 393-400 More about this Journal
Abstract
The effect of ground granulated blast-furnace slag (GGBS) and alkaline activator on the properties of setting, compressive strength, drying shrinkage and resistance of carbonation was assessed to develop high volume slag concrete, the GGBS replacement rate of which was more than 80 percent. The changes in the concrete as the replacement rate of GGBS increases were as follows. Initial and final setting time was delayed by two and a half hours, and the compressive strength development properties of concrete in early and long term age were decreased. Drying shrinkage was satisfactory as below $6{\times}10^{-4}$ in every mixture, and yet showed a tangible trend by replacement rate. Carbonation was materially increased. Setting time and early strength development property, however, were extremely advanced by the addition of the alkaline activator. While drying shrinkage was improved by the alkaline activator, resistance to carbonation was not.
Keywords
ground granulated blast-furnace slag(GGBS); alkali activator; drying shrinkage; carbonation resistance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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