one of my neighbors resurfaced his driveway at least 5 times, twice by a contractor who promised it would last at least 20 years. it started de-laminating with in a couple years. The neighbor was trying to correct his mistake of melting his snow and ice with salt. They tried lots of stuff to clean out the salt problems, but nothing worked. Salt is the problem, period. Even the salt from the roads dripping on the driveway and garage are potential problems. If there isn't any good slope or drainage, and the water pools in low areas, salt will eventually break down the concrete.
The best fix before you spend dollars on the resurface, is to cut out the concrete with a concrete saw in a nice sized area, or two or three places depending on the areas of damage. And pour in new concrete. If you can cut out your driveway damage in symmetrical layout, use SR concrete. It's a little darker then normal, but looks way better then crumbled sand and concrete.
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