Repair Crumbling Cinder Block

Learn how to repair crumbling cinder block.  Find out how to remove old paint and use an epoxy patching compound to repair cracked or crumbled cinder blocks.

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cinder block pops

I have a cinder block basement, about 50 yrs old. There are "pops", similar to what a popped drywall nail would look like. There is no moisture or water at all, no cracks or crumbling, just the pops. They occur on the outside wall as well as a wall that backs to a workshop. They also occur all over, not just one place. I picked one out and there isn't a hole, just solid cinder block behind the pop outs. Any idea what causes this?