"HeyBub" wrote in news:ZbSdnbq3gZ6ZMfjWnZ2dnUVZ snipped-for-privacy@earthlink.com:
I think you inadvertently switched them. Bu I do get the drift.
Concrete can be recycled as well, and I doubt that the cost differential is as big as you say. And I note you have come down from a factor of 10 to a factor of less than 7.
I don't care about Texas (smile!!).
IMNSHO a lot can be done by altering our approach for future work just slightly. This example is for moderate climates with freeze-thaw cycles, like around New York. For instance, a road surface on a local village road with good cracks in it (not HUGE, but just good cracks) can be rather easily repaired well, using a little extra effort. Not just slapping some asphalt repair stuff on it, and patting that down with a shovel, but heating the old surface, patching it and sealing it with liquid tar (whatever). The road could easily last another 10 years or more then while the slapping patching stuff just lifts in a year or two. Yes the initial repair is more than twice as costly, but it lasts much more than 3 times as long. You get what you pay for!
Then when real resurfacing is needed, a decision could be made to hae a lighter colored top layer. Many factors go into these choices, but albedo could easily be included.