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Re: GSBN:carbon sequestering
In a message dated 11/20/00 9:29:46 AM, bainbrid@...
(David Bainbridge) writes:
>Has anyone made a serious effort to calculate potential carbon
>sequestration in straw bale buildings? This should include an offset
>if cement plasters are used --high energy demand.
I share David's curiosity about this. But the offset from cement plasters is
itself offset by the long-term carbonation of concreteTo what extent,
however, we don't know.
(Concrete, and cement plasters, and all cement-based constructions, capture
atmospheric carbon in the outer (exposed) inch or two of any surface over a
period of years. This reaction is well known, and though some of the
ecologically-minded concrete guys I know have thought about this, no one to
my knowledge has tried to calculate how much carbon all the concrete in the
world has soaked up. But it's a bunch, you bet. Almost surely nowhere near
enough to make up for all the CO2 that was released in its manufacture, but
still, a bunch.)
a bunch of near enough engineer