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Materials 2016, 9(3), 185; doi:10.3390/ma9030185

Strength Development and Hydration Behavior of Self-Activation of Commercial Ground Granulated Blast-Furnace Slag Mixed with Purified Water

1
School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulju-gun, Ulsan 689-798, Korea
2
Samsung C&T Corporation, 14, Seocho-daero 74-gil, Seocho-gu, Seoul 137-956, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Received: 14 January 2016 / Revised: 29 February 2016 / Accepted: 1 March 2016 / Published: 10 March 2016
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Abstract

In this study, ground granulated blast-furnace slag (GGBFS) samples from Singapore, Korea, and the United Arab Emirates were hydrated with purified water to estimate the cementing capabilities without activators. Raw GGBFS samples and hardened pastes were characterized to provide rational explanations for the strengths and hydration products. The slag characteristics that influenced the best strength of raw GGBFS were identified. Although it is widely recognized that GGBFS alone generally shows little cementing capability when hydrated with water, the GGBFSs examined in this study demonstrated various strength developments and hydration behaviors; one of the GGBFS samples even produced a high strength comparable to that of alkali- or Ca(OH)2-activated GGBFS. In particular, as the GGBFS exhibited a greater number of favorable slag characteristics for hydraulic reactivity, it produced more C-S-H and ettringite. The results demonstrated a reasonable potential for commercial GGBFS with calcium sulfates to function as an independent cementitious binder without activators. View Full-Text
Keywords: GGBFS; calcium sulfates; hydration with water; cementless binder; strength GGBFS; calcium sulfates; hydration with water; cementless binder; strength
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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. (CC BY 4.0).

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MDPI and ACS Style

Park, H.; Jeong, Y.; Jeong, J.-H.; Oh, J.E. Strength Development and Hydration Behavior of Self-Activation of Commercial Ground Granulated Blast-Furnace Slag Mixed with Purified Water. Materials 2016, 9, 185.

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