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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 October 16th, 2005, 04:00 PM   #41
thunder head
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asphalt. looks way better and very smooth, especially on new freeways! All roads here in Melbourne and Victoria are asphalt. Although in Queensland and NSW, concrete highways are more common.

few asphalt highways from around Melbourne






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Old October 16th, 2005, 05:09 PM   #42
DrJoe
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Asphalt
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Old October 17th, 2005, 01:53 AM   #43
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The 401 through Toronto, Canada was concrete in the 60-70s but it seems to have been replaced with some sort of asphalt compound.

1. Anyone knows the precise reason for their decisions?

2. Does open asphalt concrete of the types shown in Japan and Holland work in the harsher Canadian winters?

Personally, the concrete highways I've driven on definitely suck -- noisy, bumpy, ugly -- and on well-worn concrete surfaces where it has been polished to a shiny surface, I think it is just as slippery if not more so than good asphalt.

On the other hand, I know that asphalt gets compressed into ruts after a few years - particularly on heavy truck routes.

But new asphalt is great.
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Old October 17th, 2005, 02:47 AM   #44
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asphalt road in kuwait ,



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Old October 17th, 2005, 04:01 PM   #45
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Quote:
Originally Posted by TO_Joe
The 401 through Toronto, Canada was concrete in the 60-70s but it seems to have been replaced with some sort of asphalt compound.

1. Anyone knows the precise reason for their decisions?

2. Does open asphalt concrete of the types shown in Japan and Holland work in the harsher Canadian winters?

Personally, the concrete highways I've driven on definitely suck -- noisy, bumpy, ugly -- and on well-worn concrete surfaces where it has been polished to a shiny surface, I think it is just as slippery if not more so than good asphalt.

On the other hand, I know that asphalt gets compressed into ruts after a few years - particularly on heavy truck routes.

But new asphalt is great.
Ontario used concrete as the base for its GTA area highways simply because concrete is so much more durable then asphalt. Even under most asphalt paved highways, there is a thick concrete base. Utilizing the concrete base as a driving surface for 20 years (roughly half of the concretes life) lowers initial construction costs since the paving project is simply deferred. This is also the plan for the 407. The 407 is to be paved over with asphalt after about 20years of being in operation.

Cheers.
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Old October 17th, 2005, 05:27 PM   #46
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Quote:
Originally Posted by TO_Joe
2. Does open asphalt concrete of the types shown in Japan and Holland work in the harsher Canadian winters?
In Japan, open asphalt is said to have a little weak side in the place where snow tyres are used in winter (especially in heavily snowy and cold northern Japan).
Snow tyres chip off the front face of asphalt, and snow tends to remain on roads, and meltwater freeze in open asphalt. Thus, roadways have to be equiped with 'road heating system'.



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Old October 17th, 2005, 06:35 PM   #47
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amazing stuff with the road heating
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Old October 17th, 2005, 06:45 PM   #48
TO_Joe
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road heating must be incredibly expensive to build and operate
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Old October 17th, 2005, 08:26 PM   #49
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Wow that is pretty cool and as said must be awfully expensive to build and maintain. I wonder if it is just used in certain sections or along the whole road??? I know here some bridges have de-icer systems which sprays some type of film over the road surface so it wont freeze but thats just on bridges.



Quote:
Originally Posted by sonysnob
Ontario used concrete as the base for its GTA area highways simply because concrete is so much more durable then asphalt. Even under most asphalt paved highways, there is a thick concrete base. Utilizing the concrete base as a driving surface for 20 years (roughly half of the concretes life) lowers initial construction costs since the paving project is simply deferred. This is also the plan for the 407. The 407 is to be paved over with asphalt after about 20years of being in operation.

Cheers.
I never knew that, thats a pretty smart technique actually.
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Last edited by DrJoe; October 17th, 2005 at 08:35 PM.
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Old October 18th, 2005, 05:17 AM   #50
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Dunno about other countries, but India should use concrete for rural and semi-urban/semi-rural areas. Coz in those areas, its the ruggedity that matters. For the main highways, they should use asphalt.
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Old October 18th, 2005, 05:21 AM   #51
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India

Asphalt







Concrete



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Old October 18th, 2005, 05:32 AM   #52
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Imagine if one section of a heated road got severed because of a nearby earthquake or cracked from age. They'd have to tear the section up, assuming there is equipment to determine where it was damaged!
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Old October 18th, 2005, 06:30 AM   #53
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hey, imagine if they planned for earthquakes! none of what you said would happen!

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Old October 20th, 2005, 03:14 PM   #54
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Quote:
Originally Posted by NerveAgent
Pretty much every road in the Uk is asphalt (we call in tarmac for some reason, think its a brand name)
Tarmac is an abbreviation of tarmacadam, which was a road surface invented by a Scot named MacAdam in the 19th Century, made by mixing tar with gravel. Tarmac became obsolete once asphalt was invented, but the name (wrongly) persists in the UK...
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Old October 20th, 2005, 08:33 PM   #55
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For a tropical climate where there is a rainning season, which one would best best to have, ashphalt or concrete? Many African countries have rainning season and it damages the roads, one of the reason they are in poor qualities.
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Old October 20th, 2005, 09:00 PM   #56
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Asphalt by a mile! I was actually taken aback when I first went to the US, being driven along ugly (and very uncomfortable) concrete monstrosities!
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Old October 21st, 2005, 01:05 PM   #57
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Quote:
Originally Posted by Machiavel
For a tropical climate where there is a rainning season, which one would best best to have, ashphalt or concrete? Many African countries have rainning season and it damages the roads, one of the reason they are in poor qualities.
Roads and highways are mainly made of asphalt in Malaysia, though some sections of the tolled highways were made of concrete. If I am not mistaken, cost was a major factor. However, I believe the highways built in the late 80s and early 90s were mainly built using concrete in order to use up the surplus cement production capacity in the country at the time. So in this case, it was macro-economics that choose the material.

Which one is most suitable? I think it really depends on the run off of surplus rain water. Eitherway, if one speed in the rain, one might come to grief in due time, whether it is concrete or asphalt. I personally prefer asphalt. Less noisy.
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Old October 22nd, 2005, 12:04 AM   #58
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Asphalt
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Old April 24th, 2007, 09:47 AM   #59
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Whisper concrete.What is it?

Anyone have heard or seen this type of concrete used on roads before?The Public Works Ministry suggests the whisper concrete to be used on some sections of Malaysia highway.Pictures are also welcome.
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Old April 24th, 2007, 01:04 PM   #60
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whisper concrete, or whisper asphalt, is a pavement with extreme noise reducing. It is even so quiet, that it may give dangerous situations, i have seen it in the netherlands, and driving with 50km/h you don't hear a car coming, unless it is almost next to you.

However, it is a lot more expensive, but great on motorways, it really reduces noise pollution. Most noise comes from the tires, not necessarily from the engine.
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