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View Poll Results: So??
Asphalt 92 80.70%
Concrete 22 19.30%
Voters: 114. You may not vote on this poll

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Old April 2nd, 2008, 09:20 AM   #381
Bartolo
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Its probably the type of stone they use, here in ontario we have pink asphalt in areas
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Old April 2nd, 2008, 11:46 AM   #382
ChrisZwolle
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I'm working in the field here, but i'm not a pavement expert.

Concrete
Pro's
Much longer durability
Lower construction costs
Cons
Can crack easily
Noise pollution is considerably higher
Can get slippery, because the water drainage is much worse than asphalt
People often see concrete more as urban blight than asphalt

Asphalt
Pro's
In case of PAC, no splashing water when it rains
Higher capacity because of better drainage
Less slippery except with icy conditions
Far less noise pollution (favorable in urban area's)
More Aesthetic
Con's
(far) higher construction costs
Higher maintenance costs
Not favorable on roads with a lot of trucks, unless you like high maintenance costs
Can also crack, but can be repaired better

Besides that, Asphalt is normally black, but can be constructed in any color.
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Old April 2nd, 2008, 11:56 AM   #383
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I'm not a civil engineer so this is just my personal opinion based on real experience. Currently most of Czech highways are being built using concrete wherever possible.

Pro's:
- durability (R35 in CZ is 10 years old and stil very comfortable to drive)
- no "rails" (I mean truck traces) since concrete rather cracks than bend
- the surface is rough therefore the safety is improved due to shorter stopping distance

Con:
- drive is noisy and shaky more than asphalt
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Old April 2nd, 2008, 04:05 PM   #384
Mateusz
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I thought there is already such topic as asphalt vs. concrete roads...
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Old April 2nd, 2008, 04:55 PM   #385
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I've noticed that asphalt in Germany is way more black than here in Sweden...
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Old April 2nd, 2008, 05:01 PM   #386
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Concrete might be more cost efficient in the long run (lower maintanance, no potholes and cracks) but as far as i know it costs more to build, than asphalt.
I think asphalt looks better, but concrete would look great with black markings, dont you think?
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Old April 2nd, 2008, 05:37 PM   #387
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cocrete is more costly, but for the long run it is not(concrete's durability is around 30 years, and asphalt's - 10 or 15)

But when it comes to maintance it is not the same - cocrete need to be provessionally "supervised" all the time

Following things support cocrete:
- it's far more smooth than asphalt(when made prperly)
- very durable
- rut - proof
- IMO it looks better
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Old April 2nd, 2008, 05:50 PM   #388
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Quote:
Originally Posted by RKC View Post
I think asphalt looks better, but concrete would look great with black markings, dont you think?
No, because have you ever seen black markings at night? Of course not, because they are not visible then
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Old April 2nd, 2008, 09:48 PM   #389
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Quote:
Originally Posted by Schweden View Post
I've noticed that asphalt in Germany is way more black than here in Sweden...
In Estonia asphalt is black at first but after the first winter it becomes light grey. I think it's caused by stubbed tyres. This might be the case in Sweden also.
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Old April 2nd, 2008, 10:04 PM   #390
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Quote:
Originally Posted by Bartolo View Post
Its probably the type of stone they use, here in ontario we have pink asphalt in areas
I think that's concrete mixed in with dye or oxidized iron (rust basically). I remember a discussion in Ottawa a few years back to pave Wellington St. with the stuff to mark the Confederation route I believe it was called which would run in a loop between Ottawa and neighbouring Hull. I've seen the "pink asphalt" as you call it and it bears a greater similarity to sidewalk cement than road asphalt.
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Old April 3rd, 2008, 04:36 AM   #391
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If you like concrete expressways, you should go to Michigan.
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Old April 3rd, 2008, 04:56 AM   #392
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Quote:
No, because have you ever seen black markings at night? Of course not, because they are not visible then
Quote:
I think asphalt looks better, but concrete would look great with black markings, dont you think?
Don't they just have white reflective markings outlined in black, combined with reflective buttons?

You can see them just fine night or day.
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Old April 3rd, 2008, 10:25 AM   #393
FM 2258
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Concrete is much better in my opinion. I also really love the whistling noise your tires make when driving over the grooves. I've noticed in Houston and Dallas some of the surface streets are being built with concrete like on the freeways. I was telling one of my friends who knows I'm a nerd that I love how her street sounds like a freeway when I'm speeding.

Asphalt in the rain just really sucks unless it's that type of asphalt that makes that low grumbling noise. Smooth asphalt is the worst.
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Old April 3rd, 2008, 11:42 AM   #394
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Quote:
Originally Posted by Chriszwolle View Post
No, because have you ever seen black markings at night? Of course not, because they are not visible then
oh yeah never thought of that hahahahahaha
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Old April 3rd, 2008, 12:06 PM   #395
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Prices asphalt vs. concrete

I think nowadays the problem of costs/km is the biggest. Post here if you know how high are the expenses/km in your country for: -asphalt vs. concrete on highway (4lanes+2emergency lanes); - asphalt vs. concrete on expressway (4lanes splitted in the center). Let's say the roads are normal ones build on land, without bridges or tunnels.
I am quite curious about this issue.
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Old April 3rd, 2008, 12:14 PM   #396
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We do not construct any concrete motorways, so i can't really tell.
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Old April 3rd, 2008, 03:22 PM   #397
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Quote:
Originally Posted by Chriszwolle View Post
We do not construct any concrete motorways, so i can't really tell.

What about the asphalt ones Chris?
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Old April 3rd, 2008, 03:37 PM   #398
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Well, i think our road construction is one of the most expensive in the world, but sometimes more money goes to natural compensations, procedures, bureacracy etc, than the actual road. A good compensation is therefore hard to make.

For instance, the A4 Delft - Rotterdam is planned for 700 million euro's. This road is only 7000 meters long...
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Old April 3rd, 2008, 03:39 PM   #399
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Dutch higways can differ very much in colour. See this:

[IMG]http://i26.************/3537fhk.jpg[/IMG]

[IMG]http://i31.************/24cusr4.jpg[/IMG]

Both pics are taken on the A7, Afsluitdijk. The road on the last pic has been resurfaced recently. The upper one is still waiting for reconstruction, but it will have black asphalt after resurfacing.
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Old April 3rd, 2008, 04:24 PM   #400
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Yeah, it fades over the years but freshly laid asphalt is sooo quiet and stays dry in the rain. That effect degrades over time but it's way better than concrete. There is a small section of road near me built using concrete in the early 1990s and the quality of the road is shocking.
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