daily menu » rate the banner | guess the city | one on oneforums map | privacy policy | DMCA | news magazine | posting guidelines

Go Back   SkyscraperCity > Infrastructure and Mobility Forums > Highways & Autobahns

Highways & Autobahns All about automobility



Global Announcement

As a general reminder, please respect others and respect copyrights. Go here to familiarize yourself with our posting policy.


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

Reply

 
Thread Tools
Old September 26th, 2007, 07:56 PM   #161
keber
Moderator
 
Join Date: Nov 2006
Location: Slovenia
Posts: 9,878
Likes (Received): 1364

Hm, Slovenian motorways (even new ones) are not smooth at all, if comparing to let's say 25 years old A10 (Spittal-Villach).

And I was on pictured autobahn last year, which smoothness is much better to A10, so I know, what I speak/write.
keber no está en línea   Reply With Quote

Sponsored Links
Old September 26th, 2007, 07:58 PM   #162
radi6404
Registered User
 
radi6404's Avatar
 
Join Date: May 2007
Location: Blagoevgrad/ Nürtingen
Posts: 3,054
Likes (Received): 27

Quote:
Originally Posted by keber View Post
Hm, Slovenian motorways (even new ones) are not smooth at all, if comparing to let's say 25 years old A10 (Spittal-Villach).

And I was on pictured autobahn last year, which smoothness is much better to A10, so I know, what I speak/write.
why aren´t they smooth, the motorway from Croatian border to Lubljana has some parts which were very smooth or maybe just the Bus was good, don´t know, anyway you wont feel a thing on the struma, no matter what car you drive. I also drive the A10, it´s really good, for it´s age, is it concrete, you almost don´t feel a thing
radi6404 no está en línea   Reply With Quote
Old September 27th, 2007, 05:08 PM   #163
Wallaroo
Registered User
 
Wallaroo's Avatar
 
Join Date: Aug 2007
Posts: 126
Likes (Received): 1

Can anyone please explain to me how a motorway like the below one have been built?

Is it pre-fabricated concrete elements that have been transported to the construction site, and then placed on the ground with high precision? Or is liquid concrete that have been filled in metal frames right on the construction site?

I would also like to know how much faster is is to built concrete motorway like this instead of an asphalt one - lets say a 100 km stretch?


Last edited by Wallaroo; September 27th, 2007 at 05:38 PM.
Wallaroo no está en línea   Reply With Quote
Old September 27th, 2007, 06:31 PM   #164
RawLee
Registered User
 
RawLee's Avatar
 
Join Date: Jul 2007
Location: Budapest
Posts: 9,447
Likes (Received): 1083

Quote:
Originally Posted by Wallaroo View Post
Can anyone please explain to me how a motorway like the below one have been built?

Is it pre-fabricated concrete elements that have been transported to the construction site, and then placed on the ground with high precision? Or is liquid concrete that have been filled in metal frames right on the construction site?

I would also like to know how much faster is is to built concrete motorway like this instead of an asphalt one - lets say a 100 km stretch?
In the old time,it was built just as you said,with concrete blocks. Nowadays,I think they pour it right on the spot.
RawLee no está en línea   Reply With Quote
Old September 27th, 2007, 07:45 PM   #165
keber
Moderator
 
Join Date: Nov 2006
Location: Slovenia
Posts: 9,878
Likes (Received): 1364

Quote:
Originally Posted by RawLee View Post
In the old time,it was built just as you said,with concrete blocks. Nowadays,I think they pour it right on the spot.
Actually you may be wrong. Maybe it was done so in some places, but this would be very difficult because of heavy machinery needed for transporting big concrete blocks, which was expensive at that time.
As I know, in most countries it was poured with special train machine, means machine runs on rails and pours fresh concrete on fortified tampon. Of course steel reinforcement is placed before. Then it is smoothed and dilatation slots are made to prevent damage to hardened concrete later, when it is used. This principle is used already for decades, only machines and materials got better.

Still on A3 I saw some special machine, that doesn't look like "concrete train". How does it work is mystery to me. But it does work good, that's sure.

That how German concrete pavement looks:
keber no está en línea   Reply With Quote
Old September 27th, 2007, 07:54 PM   #166
Wallaroo
Registered User
 
Wallaroo's Avatar
 
Join Date: Aug 2007
Posts: 126
Likes (Received): 1

Quote:
Originally Posted by keber View Post
Actually you may be wrong. Maybe it was done so in some places, but this would be very difficult because of heavy machinery needed for transporting big concrete blocks, which was expensive at that time.
As I know, in most countries it was poured with special train machine, means machine runs on rails and pours fresh concrete on fortified tampon. Of course steel reinforcement is placed before. Then it is smoothed and dilatation slots are made to prevent damage to hardened concrete later, when it is used. This principle is used already for decades, only machines and materials got better.

Still on A3 I saw some special machine, that doesn't look like "concrete train". How does it work is mystery to me. But it does work good, that's sure.

That how German concrete pavement looks:
So the question is how much faster and cheaper it is to built an expressway like this compared to building it with conventional asphalt?
Wallaroo no está en línea   Reply With Quote
Old September 27th, 2007, 08:02 PM   #167
RawLee
Registered User
 
RawLee's Avatar
 
Join Date: Jul 2007
Location: Budapest
Posts: 9,447
Likes (Received): 1083

Quote:
Originally Posted by keber View Post
(...)
Thats why I said "I think",because I've never seen any motorway construction by myself. And we only have a short concrete segment now,and a longer u/c,so is a rare sight.
There was a concrete motorway in Hungary,but we repaved that because it was made out of blocks similar to the ones in commieblocks,an the cars were going tak-tak-tak all the way,just like trains.
RawLee no está en línea   Reply With Quote
Old September 28th, 2007, 01:27 AM   #168
Nephasto
Enlightened user
 
Nephasto's Avatar
 
Join Date: Feb 2004
Location: Porto
Posts: 5,802
Likes (Received): 71

Quote:
Originally Posted by Wallaroo View Post
So the question is how much faster and cheaper it is to built an expressway like this compared to building it with conventional asphalt?
It's much less expensive to build it using asphalt, and probably faster too (although it may be otherwise).
__________________
Long live rail freight!!
Nephasto no está en línea   Reply With Quote
Old September 28th, 2007, 10:20 AM   #169
keber
Moderator
 
Join Date: Nov 2006
Location: Slovenia
Posts: 9,878
Likes (Received): 1364

Quote:
Originally Posted by Nephasto View Post
It's much less expensive to build it using asphalt, and probably faster too (although it may be otherwise).
It is not (otherwise). Concrete surfaces are much more expensive and take much more time to build. And talking about time: you can drive over new asphalt virtually right away (but after few days it is usual), but over concrete it needed to wait for about one month, even better it is to wait for one year.
keber no está en línea   Reply With Quote
Old September 28th, 2007, 10:12 PM   #170
Nephasto
Enlightened user
 
Nephasto's Avatar
 
Join Date: Feb 2004
Location: Porto
Posts: 5,802
Likes (Received): 71

You agree with me then. My "otherwise" was refered to the time it took to build, which I wasn't sure(although quite certain) that asphalt was faster.
__________________
Long live rail freight!!
Nephasto no está en línea   Reply With Quote
Old September 29th, 2007, 07:04 AM   #171
Shukie
Anti-pipi
 
Shukie's Avatar
 
Join Date: Mar 2007
Location: The Netherlands
Posts: 495
Likes (Received): 6

I've never driven on concrete, but in these pictures it looks much more slippery than asphalt.
Shukie no está en línea   Reply With Quote
Old September 29th, 2007, 01:27 PM   #172
keber
Moderator
 
Join Date: Nov 2006
Location: Slovenia
Posts: 9,878
Likes (Received): 1364

If it were so, they certainly wouldn't build them in Austria.
Concrete can be modified between construction so it's not slippery. Asphalt can't be modified much.
keber no está en línea   Reply With Quote
Old September 29th, 2007, 09:26 PM   #173
Shukie
Anti-pipi
 
Shukie's Avatar
 
Join Date: Mar 2007
Location: The Netherlands
Posts: 495
Likes (Received): 6

I know it's not, but it seems like it.
Shukie no está en línea   Reply With Quote
Old September 29th, 2007, 09:31 PM   #174
ChrisZwolle
Road user
 
ChrisZwolle's Avatar
 
Join Date: May 2006
Location: Zwolle
Posts: 43,571
Likes (Received): 19362

SMA can actually be very slippery, especially the first 2 years.
ChrisZwolle está en línea ahora   Reply With Quote
Old September 30th, 2007, 06:17 PM   #175
radi6404
Registered User
 
radi6404's Avatar
 
Join Date: May 2007
Location: Blagoevgrad/ Nürtingen
Posts: 3,054
Likes (Received): 27

How is it possible to make asphalt apsolutely smooth, there are sections on the E-79 / Struma where there´s no bump for 5 km, how is this possible?
radi6404 no está en línea   Reply With Quote
Old September 30th, 2007, 08:45 PM   #176
ChrisZwolle
Road user
 
ChrisZwolle's Avatar
 
Join Date: May 2006
Location: Zwolle
Posts: 43,571
Likes (Received): 19362

That's pretty normal for any new road...

They do that with road rollers.
ChrisZwolle está en línea ahora   Reply With Quote
Old September 30th, 2007, 09:48 PM   #177
radi6404
Registered User
 
radi6404's Avatar
 
Join Date: May 2007
Location: Blagoevgrad/ Nürtingen
Posts: 3,054
Likes (Received): 27

Quote:
Originally Posted by Chriszwolle View Post
That's pretty normal for any new road...

They do that with road rollers.
but what´s between the space where the roadrollers don´t go over?
radi6404 no está en línea   Reply With Quote
Old September 30th, 2007, 09:50 PM   #178
keber
Moderator
 
Join Date: Nov 2006
Location: Slovenia
Posts: 9,878
Likes (Received): 1364

And what spaces should that be?
keber no está en línea   Reply With Quote
Old September 30th, 2007, 10:31 PM   #179
RawLee
Registered User
 
RawLee's Avatar
 
Join Date: Jul 2007
Location: Budapest
Posts: 9,447
Likes (Received): 1083

Quote:
Originally Posted by keber View Post
And what spaces should that be?
I suppose dilatation bridge parts...
RawLee no está en línea   Reply With Quote
Old September 30th, 2007, 11:38 PM   #180
keber
Moderator
 
Join Date: Nov 2006
Location: Slovenia
Posts: 9,878
Likes (Received): 1364

Sure, but asphalt is not present in dilatation.
keber no está en línea   Reply With Quote


Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Related topics on SkyscraperCity


All times are GMT +2. The time now is 10:06 PM.


Powered by vBulletin® Version 3.8.11 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Feedback Buttons provided by Advanced Post Thanks / Like (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.

SkyscraperCity ☆ In Urbanity We trust ☆ about us | privacy policy | DMCA policy

tech management by Sysprosium