Resistance of Concrete with Metakaolin Addition to Acid Environment

Abstract:

Durability of concrete is a crucial parameter with respect to lifetime of concrete structures, nevertheless it is very complex issue. There is number of methodologies to predict final durability of concrete and substantial part of them is based on the accelerated tests in severe conditions or environment. Present paper deals with the experimental study of the influence of concrete composition on the resistance to sulfate environment. Metakaolin replacement of Portland cement was incorporated in the studied mixtures which were subjected to various sulfate containing solutions. Final resistance was evaluated by means of loss of mass and compressive strength. Performed experimental program confirmed positive influence of metakaolin replacement up to 30 % by cement weight, however higher doses reduced workability. All studied mixtures with metakaolin addition exhibited improved resistance to acid environment.

• Periodical: Key Engineering Materials (Volume 677)
• Pages: 144-149
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.677.144
• Online since: January 2016
• Authors: Pavel Reiterman*, Jiří Tomek
• Keywords: Degradation, Durability, Metakaolin, Sulphuric Acid

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