This year, I'd really approaching to do some crack? repairs on my driveway, but I've heard you can't a moment...

repairs on my driveway, but I've heard you can't a moment ago put new cement over matured cement. what kind of materials do I entail to fill contained by cracks in already hardened concrete?
Answers:    Just to reflect on, I was going to try to convince you not to throw your vivacity away on drugs! lol
try crack-x