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Advances in Civil Engineering
Volume 2012, Article ID 579732, 7 pages
Research Article

Strength and Drying Shrinkage of Alkali-Activated Slag Paste and Mortar

1Department of Fire Science, WuFeng University, Chiayi County 62153, Taiwan, China
2Department of Harbour and River Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan, China

Received 9 January 2012; Accepted 14 March 2012

Academic Editor: Venu Gopal Madhav Annamdas

Copyright © 2012 Mao-chieh Chi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of this study is to investigate the strengths and drying shrinkage of alkali-activated slag paste and mortar. Compressive strength, tensile strength, and drying shrinkage of alkali-activated slag paste and mortar were measured with various liquid/slag ratios, sand/slag ratios, curing ages, and curing temperatures. Experimental results show that the higher compressive strength and tensile strength have been observed in the higher curing temperature. At the age of 56 days, AAS mortars show higher compressive strength than Portland cement mortars and AAS mortars with liquid/slag ratio of 0.54 have the highest tensile strength in all AAS mortars. In addition, AAS pastes of the drying shrinkage are higher than AAS mortars. Meanwhile, higher drying shrinkage was observed in AAS mortars than that observed comparable Portland cement mortars.