When concrete surfaces start to deteriorate, it’s called “spalling”. When you notice concrete flaking, chipping and cracking, ...

Purchase a small tub of pre-mixed concrete patch material and trowel it in and over the crack. —Slather on roofing cement. —Order some magic sticky material hawked by a carnival barker.

For some projects, the specifications require cracks in concrete to be repaired and may specify a crack repair procedure or may simply require cracks to be repaired as directed by the engineer.