Abstract
This paper presents the reduction of quality of self-compacting concrete incorporating ground granulated blast-furnace slag that has frozen at early age and the effects of the countermeasure to the frost damage. As the experimental results, the self-compacting concrete incorporating ground granulated blast-furnace slag attacked by initial frost damage showed the remarkable reduction of both the strength development and the resistance to freezing and thawing. Especially, the resistance to freezing and thawing of the self-compacting concrete became much lower than that of the normal concrete. Furthermore, it was recognized that the strength and the resistance to freezing and thawing of self-compacting concrete could not completely recover to the quality of concrete not subjected to initial frost damage, even if countermeasures such as water curing and heat curing after initial frost damage were performed.
