I think I'm going to have to find a copy of the book, because this
really looks interesting:

"...The Concrete Battleship by Francis J. Allen. Revised edition of the
fascinating pictorial on Fort Drum, the "Concrete Battleship" in Manila
Bay. Great information on construction, the battle for Manila,
repossession from the Japanese and Fort Drum today. Soft., 64 pages,
photos, illus...."

http://www.warbooks.com/wwallies.html





Short Wave Sportfishing wrote:
On Thu, 18 Jan 2007 18:17:41 -0500, JohnH wrote:

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?

Funny you should mention that.

I know a guy who experiments with different concrete for boats. He
uses a concrete with really small hollow glass beads as the aggregate
and some kind of hinky type of epoxy stringers - I don't know all the
specifics of it, but he built a canoe out of the stuff and damned if
it didn't float and two people could handle it.

Last I heard, he was planning on building a sailboat using the
mixture.