---Would you think they would declare road base toxic? It would be a
liability nightmare - of course bitumin is toxic - but then mechanics
regularly wash grease off there hands with gasoline-if I forget to
wear gloves, I get alkaline dermatitus on my hands - the worst thing
about portland is that they burn coal to make it ( releasing mercury
etc.) - perhaps at some point we will make portland with a solar kiln-
still portland ends up to be the glue of choice - so far- keep
looking- Clyde In papercreters@yahoogroups.com, "Ernie Phelps"
<eepjr24@...> wrote:
>
> --- In papercreters@yahoogroups.com, "John Annesley" <John@>
> wrote:
> >
> > Nick,
> > Asphalt Emulsion isn't a hydrocarbon, nor does it contain any of
> > those.
>
> False.
>
> "Asphalt itself is a hydrocarbon mixture that is heated until it has
> the consistency of tar."
> http://www.wisegeek.com/how-is-asphalt-made.htm
>
> > There are asphalt lakes in various parts of the world which occur
> > naturally.
>
> True.
>
> Here is a study of some. However, you will note that they specify
> they are hydrocarbons. Bitumen = Asphalt (asphalt is the common name
> in the US, bitumen out side of the US).
>
> http://www.ags.gov.ab.ca/publications/ABSTRACTS/GEO_2002_01.html
>
> > Asphalt whether its a derivative of the petroleum industry or a
> > naturally occurring deposit, is non-toxic.
>
> All depends on your defintion of toxic. About 12 states say it is,
> the rest don't think so.
>
> <snip>
>
> Lastly, there is an interesting discussion on the wiki
> (http://en.wikipedia.org/wiki/Asphalt) about using vegetable oil
> derivatives for the same purpose. Personally I would find these
> easier to justify using than a by-product of the petroleum industry.
>
> - Ernie
>
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