Walking around GoPro last year I was surprised to see how the pavement there was getting torn up in the corners. It still drives well, but there is definitely some noticeable wear and tear which I imagine will probably require some maintenance in the not-too-distant future.
Dousman is a good track to contrast that one with, as the original track layout has concrete patches in the corners with asphalt straights. The surface in Dousman is very old at this point - I don’t think it has been repaved since before I started racing there around 20 years ago. Granted, it is probably overdue for a repave, but it isn’t showing the same surface tearing around the corners. The wear and tear there is more from cracks that have developed due to the extreme temperature changes you’ll see throughout the year in Wisconsin, which have been addressed easily enough with some filler.
Granted this is entirely anecdotal - but while concrete is more expensive to lay down, it seems like it is more likely to be able to handle the forces that come with racing compared to asphalt, resulting in more infrequent repavings and less maintenance. However, in areas that aren’t going to see cornering forces, asphalt is likely more cost effective.
But as Chis said, it seems like we’re seeing fewer tracks utilizing concrete these days, and asphalt appears to be holding up better for longer as technology advances. Even at Dousman, the track addition they paved a few years ago is all pavement. Time will tell how well it holds up, but it does seem like we are seeing fewer tracks utilizing concrete now compared to 20 or so years ago.