[snapplebobapple]

I think maybe some of the confusion is over how asphalt works. It's really easy to reclaim because it is essentially just a phase change operation. I forget the exact temperatures but you heat asphalt up past a certain point and it turns into basically a slurry of whatever hydrocarbon (plus additives) that is doing the phase change and stuff like sand, small stone, etc. The sand and small stone is infinitely reusable so when they resurface they are often scraping up the old, loading it into a machine that heats it up, adds a small amount of the hydrocarbon (and additives) plus some more filler (think sand) and putting it right back down to cool down and solidify.

Cement is a chemical process that can't be easily undone so once you use cement you are hooped, very limited recycling options other than grind it up and use it as filler in the new batch.