I agree with Smitty's thinking also. Concrete as I know it (with Portland cement) was invented in the 1820s. Up to that time they made a concrete with magnesium oxide or phosphates. This concrete was much stronger then the present stuff and even stuck well to wood and steel. It's still available today but runs about $30 a bag instead of the $5 for Portland cement. You can find it as a concrete floor leveler compound or quick drying patcher. Try www.ceratechinc.com
Joel
--- In papercreters@yahoogroups.com, Perry Way <perryway@...> wrote:
>
> Actually there is merit to what Smitty mentioned. There are illustrious
> Egyptologists out there in the world who all agree, the center "stones" were
> poured into molds.
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