Abstract: Metakaolin is an amorphous pozzolanic material formed by heating kaolin at about 500 ℃ to 800 ℃ which causes kao-linite dehydration. Substituting metakaolin for a certain amount of cement in the production of concrete can enhance the strength and durability of concrete, and moreover, reduce carbon emission and energy consumption due to decreased cement usage. This paper summarizes the research progress of metakaolin concrete′s (MKC) durability from the perspectives of drying shrinkage, sorptivity and water permeability, chloride penetration, sulfate resistance, carbonization, also discusses the inadequacies of the current research in MKC′s durability.
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