Are sawed joints more susceptible to salt damage than the rest of the concrete? Sawed joints tend to be raveled. Does this do significant damage to the concrete at joints?
Sawed joints have survived well in laboratory salt scaling tests, and there has been no general complaint from the field about their resistance to salt scaling. Small pieces of concrete do sometimes break loose adjacent to the joint sealant, but this does not appear to be much of a problem. Perhaps when it occurs it is only localized damage that was initiated during sawing and completed by penetration of water and ice into the cracks.