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View Poll Results: So??
Asphalt 92 80.70%
Concrete 22 19.30%
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Old August 18th, 2007, 11:32 AM   #101
rick1016
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Quote:
Originally Posted by FM 2258 View Post
I love straight up grooved concrete that whistles. I think it's the best road surface for any weather condition and that light whistling sound with clacking sounds every few hundred feet lets you know you're on a real highway.

Asphalt is just awful. It cracks all the time and feels super slick in the rain. Why not just use all concrete? It lasts for years and feels best on the tires.
I know the sound your talking about, it's great.
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Old August 18th, 2007, 01:55 PM   #102
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Our old M7 was built using concrete blocks,similar in old commieblocks. the whole route was like tak-tak-tak-tak-tak-tak. Now it is asphalt,and much better. I think concrete,if not built properly, can damage the suspension,because the bumping,while it is hard to go wrong with asphalt.
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Old August 18th, 2007, 02:06 PM   #103
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Some older German and Polish Motorways used to have very bad concrete surface, with the concrete plates some 5cm or 2 inches apart. You could have really messed up your suspension. Nowadays, in Poland all of these roads have been replaced, but i thought Germany still has one (A11).
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Old August 18th, 2007, 05:59 PM   #104
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Asphalt is the best
It is a lot more comfortable
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Old August 19th, 2007, 03:43 PM   #105
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Quote:
Originally Posted by Wallaroo View Post
Makes a lot of sense. So why dont they build them anymore here in Europe?

How much faster is it to build a new expressway in concrete instead of asphalt?
Construction of concrete pavement takes a lot more time and it also costs a lot more (around 20-30% more for flat expressway). So it is up to highway authorities what do they want and how much will they spend.

There is also a problem, if concrete pavemenet cracks somewhere. Repairing is much more complicated and expensive and takes much more time. Repairing asphalt pavement is a matter of days, for concrete a matter of months.
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Old August 20th, 2007, 06:58 PM   #106
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The Norwegian experience with concrete roads is almost exclusively bad: In a country with winters, the concrete cracks, and it is really slippery in wet conditions. Bad on multilane motorways, outright dangerous on 2-/3-lane expressways.
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Old August 20th, 2007, 07:11 PM   #107
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Asphalt looks so much better. When I was younger it always made me curious how such a rich country like the USA has so poor looking expressways
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Old August 20th, 2007, 10:51 PM   #108
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Maybe asphalt looks better. But quality of new German concrete autobahns is in my opinion far superior to asphalt autobahns, even new ones (try driving renovated autobahn from Berlin to Nüremberg) No tak-tak-tak-tak sound, no bumps or humps, smooth as you were hovering over autobahn and not driving. But it is expensive and good only in moderate climate and appropriate local geology.
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Old August 20th, 2007, 10:53 PM   #109
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What kind of pavement do they use? SMA?
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Old August 20th, 2007, 11:24 PM   #110
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As I said, concrete (or you didn't mean me?). Berlin - Leipzig stretch is probably the smoothest road surface I've seen so far. However I've driven by construction site of that motorway (A9, converting from 2+2 to 3+3). Construction lasts few years (when looking at info signs), as I know, concrete stays without load one year, and equipement for laying concrete looked very very sophisticated. And it is expensive, you bet.
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Old August 21st, 2007, 01:57 AM   #111
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Of course concrete is more expensive. But it last for longer (up to 30 years) with much less maintenance than asphalt.
So average cost per year (important for highway agencies) is the same or lower.
Asphalt would have to be redone twice probably during concrete motorway lifespan.
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Old August 21st, 2007, 03:59 AM   #112
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What's it called when a road is built with concrete, but has a few inches of asphalt dumped on top of it, scraped away, and re-applied every few years? That seems to be the norm in Florida. I think FDOT even has machines that automatically chew up the old pavement, inject new tar into it, and spit it back out behind the machine. After 11pm on weekends, it seems like there's almost always a freeway somewhere in Miami or Fort Lauderdale that's having one or two of its lanes resurfaced (it REALLY sucks when they're resurfacing the middle lane, because then the road gets crunched down to just two or three lanes on one side of the lane being resurfaced, and traffic backs up for literally 5-7 miles at 2am).

I believe that FDOT's preference for asphalt-on-concrete is due to asphalt being less slippery when it rains heavily for the first time after a few weeks of dry weather. I think the dripped oil from hundreds of thousands of cars per day gets absorbed into the asphalt, but would just form oil slicks on raw concrete.
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Old August 21st, 2007, 04:25 AM   #113
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because of earth tremors (about 3000 per day) and earthquakes (1 every 10 years aprox.), in Chile we prefer asphalt, it's more flexible. the concrete of our streets must be 'cutted' in squares, so it can break along these lines and not everywhere.
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Old August 21st, 2007, 07:35 PM   #114
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Asphalt for the car
And concrete for the truck
Four-lane highway, three for cars and one for truck..
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Old August 21st, 2007, 07:36 PM   #115
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In my hometown, Zwolle, a new 2x2 road is being constructed. They use SMA (StoneMasticAsphalt) as pavement, it has much more durability as PAC, SMA lasts 15 - 20 years under heavy truck use.
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Old August 21st, 2007, 07:42 PM   #116
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StoneMasticAsphalt is more expensive that asphalt or concrete?.
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Old August 21st, 2007, 08:23 PM   #117
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I'm not sure. I think it's cheaper as PAC. But it has the advantages of PAC and the durability of concrete.
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Old August 22nd, 2007, 12:37 PM   #118
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Asphalt has gone through a lot of research the last few decades so i think it will get the advantages concrete has and maybe even get better than concrete in the long run.

I prefer asphalt because of the crappy weather we have in The Netherlands.
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Old August 22nd, 2007, 06:16 PM   #119
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Quote:
Originally Posted by keber View Post
Maybe asphalt looks better. But quality of new German concrete autobahns is in my opinion far superior to asphalt autobahns, even new ones (try driving renovated autobahn from Berlin to Nüremberg) No tak-tak-tak-tak sound, no bumps or humps, smooth as you were hovering over autobahn and not driving. But it is expensive and good only in moderate climate and appropriate local geology.
Concrete looks ******* ugly and is a exremly hard and exremly noisy ride, why is i a problem for you that aspahtl doesn´t last as long, don´t you think counries like Germany have enough money for adding new asphalt on their motoreways every 10 years. I drove on a asphalt motorway in Austria and it was exremly smoothly and noiseless,k than we entered the concrete motroway to vienna and it was very noisy and extremly rough, i felt like i would travel with metal tires, no joke.
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Old August 22nd, 2007, 11:59 PM   #120
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It doesn't matter how it looks. It matters how it functions!

And new concrete autobahns both in Germany and Austria look and function splendid. What could be better than this?


(taken from http://www.autobahn-bilder.de)
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