I was cutting a 4 inch hole in a breeze block internal wall to fit an extractor vent and during the cut the breeze block broke loose at the cement joint causing the brick to move and the potential to shatter the block and ruinn the cut.
I pulled the block out, pumped a good bead of mega strength adhesive around the inside of the hole and pushed the block back in.
As Mega Adhesive foams up slightly it fills up any gaps and the bond it like nothing else I have every used.
I left it about 6 hours and then finished the cut without any further problems this is seriously good stuff.
PS use the gloves supplied or you will be sorry!