Alkali Activation of Blast Furnace Slag by Various Types of Activators

Abstract:

Alkali-activated systems, formed by the alkaline activation are inorganic materials characterized by the potential of ecological use. The objective of experiment was to investigate the influence of different activators on selected properties of alkali-activated systems based on granulated blast furnace slag. At the beginning of the experiment, 21 different samples prepared of 12 types of activators were tested to the basic properties. Then, selected samples with the best potencial to use were tested to compressive and flexural strength, frost resistance and surface resistance to chemical de-icing substances. The initial setting time achieved 25 - 95 minutes and final setting time achieved 30 - 105 minutes, compressive strengths were in the range 40 - 100MPa, frost resistance and resistance of surface to water and defrosting chemicals were confirmed.

• Periodical: Solid State Phenomena (Volume 244)
• Pages: 94-101
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.244.94
• Online since: October 2015
• Authors: Pavel Mec, Jana Boháčová*, Josef Koňařík, Petr Závrský
• Keywords: Activator, Alkali-Activated, Blast Furnace Slag

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