On Thu, 18 Jan 2007 17:13:24 -0500, "Reginald P. Smithers III"
wrote:




If you go back through the thread you will see that concrete's weight
can vary based upon the aggregate used. I am surprised that a PE does
not understand that. Now if you go back to the beginning of this thread
and read it very slowly you will have all of your questions answered.
They are all answered already.

Yeah, but what if I used styrofoam pellets instead of crushed limestone as
an aggregate. Wouldn't that give me a very light, air entrained concrete?
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John H