Re: scheme: fly ash in concrete

[Sam McClintock <mac@ensanity.com>]

>       I'll put in my 2c here. Sam, the point is that the fly ash FROM
> INCINERATORS is some of the most toxic crap on earth. It's loaded with
> dioxin, mercury, cadmium, lead, arsenic, and a host of other super-toxins,
> both soluble and non-soluble. Fly-ash usage schemes all share the same
> problem as all toxic waste usage schemes: 1. It justifies and cheapens the
> disposal of toxic waste and 2. It appears to hide the toxic waste but the
> toxins eventually leach out.

My 2 cents worth -> cement already contains all of this: metals, dioxins, etc.
When you add a few pounds of ash per hour to something drawing 200 tons per
hour or more, you are not impacting the overall makeup of  the cement and any
significant fashion.  And since I don't see a whole bunch of leachate horror
stories from cement (some but few), just as with glass and chromates, then what

are we talking about?   The justification of disposal that will have to done
anyway, in a concentrated area, susceptible to leaking? That we have
alternatives that somehow overlook recycling problems or long-range transport
for disposal?  ????

Sam