We had replaced our driveway with concrete in 2003. Soon after, it started to chip and peel away. What we eventually found out that the cement started to set to fast, so the contractor sprayed water on it- not a good thing to do. Can the repair I found in TOH help that- "How to renew concrete surfaces"?? Or will this just make the matter worse? I’ve also heard that once it starts to wear away, it should just be replaced.