The History of Asphalt(asphaltpavement.org)
asphaltpavement.org
The History of Asphalt
http://www.asphaltpavement.org/index.php?option=com_content&task=view&id=21&Itemid=41
8 comments
The volume and weight of traffic has changed too - with more and heavier cars, trucks and buses on more roads - and this will have affected some streets more than others. Quiet residential dead-end streets will barely change, while rat runs and secondary routes may be seeing significantly more traffic than they were ever designed for. Equally, main roads may have been massively overengineered at some point in the past and therefore able to cope with the increase. There's a lot more going on there than just the layer at the top.
The quality of the mix has changed due to the inputs. No natural virgin asphalt is used now, less refined asphalt is used, more recycled asphalt is used. Recycled asphalt has been exposed to more UV and oxygen leading to altered chemical composition to various degrees. This isn't necessarily a bad thing however a changed variable you must consider. Also asphalt is inherently a malleable product that is only as stable as the base upon which it is laid. Few things get the base preparation of projects in years past.
Talking about Asphalt, Here is a cool video of Asphalt Road Systems In Australia - https://www.youtube.com/watch?v=cnXvBuQsYak
If you visit Los Angeles, check out La Brea Tar Pits (- which is asphalt not tar)
Asphalt still bubbling from the ground; lots of fossils from since the last ice age.
Asphalt still bubbling from the ground; lots of fossils from since the last ice age.
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When I see speed bumps/humps/ramps I sometimes think of all the effort that has lead to durable, smooth roads.
While these traffic calming methods no doubt work, a badly made road would also slow drivers down.
While these traffic calming methods no doubt work, a badly made road would also slow drivers down.
And I thought it was about the game!
"National Asphalt Pavement Association", it's like America has a lobby for everything.
T-shirt: "One world. One people. One slab of asphalt. Committee to Pave the Earth, Newark, NJ."
As a kid, I visited an US Army Corps of Engineers training base, and they gave us the bituminous vs rigid pavement training talk, with two sergeants arguing the benefits of each.
As a kid, I visited an US Army Corps of Engineers training base, and they gave us the bituminous vs rigid pavement training talk, with two sergeants arguing the benefits of each.
Wait until you deal with government programs. You not only get a lobby[1], but there are t-shirts that need buying. I still think a healthy business could be run just by sending letters to all new grantees advertising t-shirts for their new program.
Yes, everyone has an association, often multiple.
1) yes, government grant programs (e.g. Head Start) have lobbying organizations to lobby for more money for the grant programs.
Yes, everyone has an association, often multiple.
1) yes, government grant programs (e.g. Head Start) have lobbying organizations to lobby for more money for the grant programs.
Hot Asphalt
https://youtu.be/vjVwi-kxLFI
Of course, I only have my own personal experience and just a little probing of someone who works in the industry who has evaded my questions about it...
However, despite the large amount of traffic, I can't explain why new surfaces will disintegrate in about ~4 years. We're in 2017; some roads that have been made 50 years ago are still good to go, while others, new ones just fall apart as soon as there are a couple of days of frost.
My take on this is that it's all made by the large contractors to get more or less unlimited work from the councils, as the roads needs to be repaired every few years...
Am I being cynical? ;-)