MARK C.PHILLIPSON and ALASTAFR W.STUPART BRE Scottish Laboratory
The surface temperatures of sample bricks have been monitored to identify the temperature at which latent heat effects occur, these being indicators of ice formation within the material. In a porous system this temperature is depressed below O’C due to a combination of effects. Data are presented which indicate that ice formation seems to occur within the material at temperatures varying between -0.2’C and -1.9’C. It is a useful parameter for evaluation of the risk of frost damage occurring from a set of environmental conditions.