Abstract

Concrete from a dam which has been reported to have suffered AAR was re-examined to explore whether the damage was at least partly due to AAR. The re-examination of the concrete confirmed the previous identification of AAR. The phyllite aggregate that had been used in the concrete was also subjected to testing for alkali reactivity in comparison to known reactive and non-reactive aggregates, and provided further evidence that the damage was partially caused by the AAR.

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