[ARC5] cement

[Kenneth G. Gordon]

On 16 Oct 2012 at 10:03, J. Forster wrote:

> This is what happens:
> 
> To Make:
> Limestone or marble + heat ==>  Calcium Oxide + CO2
> Grind that up to make cement.
> 
> To use:
> Mix w/ sand and aggregate; add water
> 
> Setup:
> 
> Calcium Oxide + water ==> Calcium Hydroxide
> Calcium Hydroxide + CO2 from the air ==> Calcium Carbonate.
> (limestone)

That is really neat, John. I never did know how it was done, but I certainly 
have always liked the result: my step-father was a general contractor in 
Montana...

Ken