Hey Cookieman,
Yah I have had the same problem concrete driveways. Most crack fillers aren't made to stand that kind of traffic and weather change. What I used for small cracks is a construction sealant. I never had cracks bigger than a quarter inch, but for the normal small cracks it worked great. I used Sika brand because it is flexible and matches the color of the concrete drive way. I wouldn't use anything meant for a asphalt driveway. Even though it might work it wont look pretty.-Gregg
Yah I have had the same problem concrete driveways. Most crack fillers aren't made to stand that kind of traffic and weather change. What I used for small cracks is a construction sealant. I never had cracks bigger than a quarter inch, but for the normal small cracks it worked great. I used Sika brand because it is flexible and matches the color of the concrete drive way. I wouldn't use anything meant for a asphalt driveway. Even though it might work it wont look pretty.-Gregg