Talk:Asphalt concrete/Archive 1

Untitled
In the article "Asphalt paving" (which has been merged with this article), there was a statement, "The ancient Chaldeans used asphalt paving inside buildings as a flooring." There was confusion between asphalt paving and tarmac in the asphalt paving article, so I left out the Chaldean refrence until someone can confirm whether their process used asphalt or tar. Also, there is no mention of this in the Chaldea article. -SCEhardt 16:23, 3 Apr 2005 (UTC)


 * Almost certainly asphalt as Chaldea is in an oil producing region. I would be surprised to see such a use of tar before the mid 1800s, when it became an industrial waste product.  Before that tar would have been specifically manufactured for that use, which seems unlikely.  Most tars get sticky above 100 F which would also make them unsuitable for that use.  Toiyabe 17:54, 23 November 2005 (UTC)


 * "Tar" is an imprecise colloquial term that is applied to a variety of different substances. Tar made from asphalt is the same thing as simply asphalt, and is probably the only kind of "tar" that would work as flooring. The Chaldeans probably heated heavy, solid (at normal temperatures) natural asphalt and mixed it with sand or gravel to make flooring. Or, they may have used "bituminous rock", which is natural sandstone impregnated with asphalt. The same material was used to make paving in the US well into the 20th century, before it was replaced by modern asphalt concrete. WCCasey (talk) 20:56, 16 September 2013 (UTC)

Please edit description of the second photo as necessary, I'm not sure what I entered is accurate. Also, please link to photo from other articles if appropriate.

Estr4ng3d 17:34, 22 December 2005 (UTC)

History
It would be interesting to learn more about the history of the technology, and the reasons why it has changed. -- Beland 00:50, 4 January 2007 (UTC)
 * Still no history section.--78.49.5.97 (talk) 01:16, 12 March 2013 (UTC)

Superpave
Superpave redirects here, but this article doesn't seem to talk at all about superpave mix design. —The preceding unsigned comment was added by Notthe9 (talk • contribs) 16:23, 4 May 2007 (UTC).
 * I've started a paragraph on Superpave under the Hot mix topic. --&#39;Triskele Jim (talk) 17:36, 19 August 2011 (UTC)

Cutback asphalt illegal?
The article states that cutback asphalt is illegal in the U.S. This isn't true. It may be banned in particular jurisdictions, but I know for sure that's legal in at least one State (New York)Psychlist 18:05, 18 September 2007 (UTC)
 * I've removed the statements about legality since they were uncited. - SCEhard T 19:06, 18 September 2007 (UTC)
 * I've added a section describing the concerns about cutback. The reference I found doesn't mention whether it is illegal or not.--[[User:Triskele Jim (talk) 17:36, 19 August 2011 (UTC)Example.jpg]]

AC = Asphalt Concrete (North America)
I'm from North America, and have never heard or seen the abbreviation AC as referring to Asphalt Concrete. Is this really true? (It may be, I've just never seen it....) Kingsfold (talk) 19:45, 3 May 2010 (UTC)

I work for the California Dept. of Transportation and we use the term "AC" as a generic abbreviation for many types of hot mixed asphalt concrete. Stephen Cameron —Preceding unsigned comment added by 67.53.105.86 (talk) 04:25, 5 August 2010 (UTC)

Blacktop
The term 'blacktop' is largely restricted to North America. Any paved road is commonly referred to as tarmac in British English. I'm not sure about usage in Australia, India etc. I'll modify the article slightly to reflect this. --Ef80 (talk) 14:02, 28 August 2010 (UTC)

This is not what I would call blacktop, except generally. Blacktop is smooth.

Nantucketnoon (talk) 03:26, 15 December 2010 (UTC)

Interwiki links
This version of Asphalt http://en.wikipedia.org/w/index.php?title=Asphalt&oldid=445131330 has several interwiki links that probably should be here, and not on that page. Please check them. Imgaril (talk) 14:05, 16 August 2011 (UTC)

Maintenance and management
I'm considering a section on how asphalt concrete is maintained. Is there any interest? Is anyone willing to help? --&#39;Triskele Jim (talk) 17:36, 19 August 2011 (UTC)


 * I'm adding a section on asphalt degradation. Yes, I know it needs more citations. I'm working on it!--&#39;Triskele Jim (talk) 17:39, 25 August 2011 (UTC)

American term only?
I don't think the term 'asphalt concrete' is used much, if at all, in Britain. The usual term would be just 'asphalt' (as here: http://www.asphaltindustryalliance.com/why.asp ) or colloquially 'tarmac'. I don't know about other parts of the English-speaking world (Australia, etc).86.143.237.89 (talk) 13:02, 24 June 2012 (UTC)
 * The problem is asphalt is just part of asphalt concrete. In the U.S., people often call asphalt concrete "asphalt" as well, much as Portland (cement) concrete is often called "cement". Tarmac is a different substance. In the U.S., the term "tarmac" is often used to refer to the area between airport boarding ramps and the run ways (which are usually covered in asphalt concrete). - Sum mer PhD  (talk) 15:06, 24 June 2012 (UTC)


 * Asphalt Concrete in this context is a dated term in the US as well, the only place I see it used in modern literature (since SHRP back in the 90's) is in reference to the asphalt binder itself, the mix is usually referred to as Hot Mix Asphalt, but this, of course, doesn't work for cold mixes (emulsions and cutbacks). 'Bituminous Mixes' would probably be the most technically accurate term to describe this article, but using such a term would likely confuse most visitors to the page. But at least all the products described have Asphalt Concrete in them...that's something. Physics1915 (talk) 20:36, 2 July 2012 (UTC)


 * The term 'asphalt concrete' or 'asphaltic concrete' is commonly used in US civil engineering and architectural design. On engineering/architectural drawings, the term is usually abbreviated as 'A.C.' or 'A/C', as in 'A.C. paving' or 'A.C. driveway'. WCCasey (talk) 06:43, 17 November 2012 (UTC)

Differences between european and north american styles
If you compare the second and third images in this article you will see something that I have noticed in the past - asphalt in the US and Canada is very different than what I typically see in the UK and Ireland. On the east bank of the pond the material is more "open" or "bumpy", apparently due to the nature of the aggregate. Does anyone know about this, who is able to add something about this in the article?

Maury Markowitz (talk) 16:49, 16 November 2012 (UTC)


 * There may be differences in gradation (the mix of stone sizes) between US and European asphalt mixes, but I couldn't find any information on UK gradations in a cursory Google search.


 * The third photo actually is not asphalt, but the stone base course that forms a foundation for the the asphalt concrete.--Triskele Jim 17:43, 16 November 2012 (UTC)
 * Not according to the caption… is the caption wrong? Maury Markowitz (talk) 11:44, 21 November 2012 (UTC)
 * It appears to be. I can't see any asphalt binder between the stones.--Triskele Jim 02:24, 23 November 2012 (UTC)

Asphalt degradation
Is there support for splitting off this section into a separate article, analogous to concrete degradation? An alternative would be a general article on pavement distress, covering asphalt, concrete and perhaps even surface-treated roads. --Triskele Jim 17:12, 16 September 2013 (UTC)

Oxidation?
In Asphalt concrete is this sentence: "Mastic asphalt concrete or sheet asphalt is produced by heating hard grade blown bitumen (oxidation) in a green cooker (mixer) until it has become a viscous liquid after which the aggregate mix is then added."

What information is the word "oxidation" in the above sentence intended to express? Would this say what's intended: "...produced by heating hard grade blown bitumen in order to promote oxidation"? -- Dough34 (talk) 15:58, 13 November 2013 (UTC)


 * Not exactly, the "blown bitumin" is oxidized bitumen, so the clearer sentence might be "Mastic asphalt concrete or sheet asphalt is produced by heating hard grade blown bitumen (also referred to as oxidized bitumen) in a green cooker (mixer) until it has become a viscous liquid at which point the aggregate mix is added." Ref: What is Oxidized Bitumen Carter (talk) 19:53, 13 November 2013 (UTC)

Paver discussion (vehicle)
Hey, I was hoping to get some other editors thoughts on how to deal with asphalt and concrete/slipform paver. There is not really any coverage of concrete pavers. The discussions is located here. XFEM Skier (talk) 06:01, 16 November 2013 (UTC)

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Rubberized Asphalt
There is an article Rubberized asphalt that should probably be integrated into this article. There is one link in the recycling section but I think it should be a more prominent part of this article. Not sure if Rubberized asphalt should even be a stand alone article. MB (talk) 19:09, 4 March 2016 (UTC)

Possibly useful picture
Example of asphalting work, no earlier than 1922, probably very shortly thereafter. Might be a worthwhile addition in the article, though I don't see much history in the article, so I leave it to someone else to make the call. - Jmabel &#124; Talk 20:35, 13 March 2016 (UTC)

Edward De Smedt
Edward De Smedt can be found in the Dutch Wiki. Peter Horn User talk 16:19, 2 September 2016 (UTC)

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