Re: scheme: fly ash in concrete

[Susan Snow <sksnow@worldnet.att.net>]

 The report from the Environmental Defense Fund does not speak of
LEACHING, but rather EROSION of cement and therefore, the release of
dioxin and other persistent organic pollutants, PAHs, heavy metals,
etc., back into the environment.

If marble erodes, certainly cement will also erode.  Furthermore, once
glass  is broken,  more surfaces are exposed to the environment, and
EROSION occurs.

What's the point?  In order to reduce (not eliminate) the impact on life
on earth, air pollution controls capture some of the poisons.  Turning
these poisons into cement, alike mixed waste or sewage sludge
composting, does not eliminate the problem --only the liability at the
source, in my opinion.

Susan Snow