Cements -a Special Category of Ice Nucleants

Abstract

Using drop-freezing technique, suspensions of different cements as well as of certain calcium compounds have been tested. The suspensions have also been tested after they have aged for given time periods. The study, besides pointing out that the threshold temperature of cement is around -5° to -6°C, has suggested that hydration could be the contributory cause for their ice nucleating behaviour. A special category of ice nucleants, having a transitory ice nucleating property, has been identified for the first time.