Freezing and thawing resistance of slag alkali activated concrete with different activators

Conference Dates

May 27-June 1, 2018


The frost resistance of alkali activated materials is often considered very good. But some opposing results have also been recorded. Despite the good mechanical properties of some slag-alkaline concretes their frost resistance was found bad for field application. One of the reason for the explanation of the discrepancy of the results may be a different composition of the alkaline activator. Very often the content of Na2O (N) or K2O (K) is mentioned as the basic characteristic of an activator. But if water glass is used as an activator the content of SiO2 (S) is also very important.

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