I need some proof that a trace gas has that much effect.
The CO2 in the atmosphere (0.003%) is equivalent to the blood stain left on
a football field after an official received 17 stab wounds when he made
three consecutive bad calls against the home team (i.e., less than two
I suspect that if power plants exhaled Argon or Helium, proof would be
constructed that these gases are sealing our doom.
And asphalt costs what? Ten times that of installing concrete?
I can see it now: In an effort to increase the earth's albido, concrete is
mandated. States with thousands of miles of two-lane Farm-To-Market or rural
roads, each hosting 50 vehicles per day, are to be resurfaced. Two-lane
concrete roadways cost a bit over $1 million per mile to construct. (Asphalt
is about $150,000 per mile and can be recycled.)
There are over 41,000 miles of Farm and Ranch roads in Texas.
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.
Albedo be damned, if using concrete results in roads that don't have to be
rebuilt every ten years or so then I'm all for it. The Romans built roads
through swamps that Moshe Dayan could drive tanks over 2000 years later, but
we can't build roads in a desert that you can drive a Jeep over 50 years
later (try to follow the original path of Route 66 if you disbelieve).
If the bean counters got their way, that would be the standard
everywhere. But they can't get that kind of funding package together
-and- give all the payouts in the rest of the political infrastructure
at the same time...and get away with it. If we could keep track of it
(IE: keep it out of pols' hands) and get competitive bids for
everything, it would actually cost taxpayers a lot less money in the
long run. The question is: How do you stop the pols from spending
every last cent in the kitty (and then some) every year?
That's a great idea. I really like the gold and ruddy roads in AZ and
Imagination is the beginning of creation. You imagine what you desire,
you will what you imagine and at last you create what you will.
-- George Bernard Shaw
You would if the federal government is to pay to replace all the asphalt
roads with concrete. Some of the dump trucks used to haul sand and cement
would have to be diverted to haul money from your state to mine.
That's new to me. Shouldn't it be the aggregate in new concrete?
Highway funds should go to railroads in the Northeast <smile>.
I walk/bike a few minutes to the NJTransit railroad station ("Radburn"),
then ride the trains at half fare (over 62) to either Hoboken or
Manhattan. I like railroads ...
Whatever. At least they're open.
From the U.S. Geological Survey:
"Aggregates produced from recycled concrete supply roughly 5 percent of the
total aggregates market (more than 2 billion t per year), the rest being
supplied by aggregates from natural sources such as crushed stone, sand, and
Total aggregate usage: 1,120,000 (x 1,000) metric tons (Table 6)
Total recycled asphalt and concrete: 7,210 (x 1,000) metric tons (Table 14)
All that statistic says is that more aggregate is being used for concrete
production than can be supplied by recycled concrete/asphalt. (only ~
0.7% could be supplied by recycling). Seems to me at least. Don't
confuse us with incorrect data/conclusions.
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