What is the best method of repair?
How should one repair freeze damaged brick?
by
Car24740634
+3
Over the last 30 years, the face of several brick have “popped” off due to freezing.
I hope this will help you.
https://www.youtube.com/watch?v=_516IASh-xg
Thats because your mortar is failing and you haven't kept up pointing the brickwork, and when moisture gets in and it freezes it destroys the brick. It could ultimately cause the whole wall to fail. I would get a mason out there to repair the wall and then work out a maintenance plan.
You could face them up with concrete mix, or dig them out and replace.
You got this! https://www.youtube.com/watch?v=xaaNzdggWr0
Dig it out and replace it.