From: Leftfieldstar{at}aol.com
To: rflrs{at}rcn.com
CC: atm{at}shore.net
Reply-To: Leftfieldstar{at}aol.com


FWD to:

In a message dated 8/9/03 4:39:15 AM Eastern Daylight Time, rflrs{at}rcn.com writes:

> Assuming that whatever water in it goes away with drying, that would
>  make a cubic foot of it weigh 1728*0.05 lbs or about 86 lbs.  If
>  water is 62 lbs per cubic foot, that would make the specific gravity
>  of it about 1.39.  This seems suspiciously low to me.  Am I missing
>  something here?
>

Yes. There is much air in a given volume of dry powdered material. SG is
about 1.6 dry and 2.3-2.6 hardened with water. The water becomes chemically
combined.

Dominic DiLeo

--- BBBS/NT v4.01 Flag-5