You can probably slice the sonotube off after 24 hours. 48 would be safer.
but be very gentle with the pry bars.
The concrete will develop about 80% strength in a week and close to %100 in
28 days unless you get some special fast cure mix.
I would definitely keep it wet with old rugs or rags for at least the first
week to promote maximum strength.
I wouldn't put the tower up till a week has gone by.
de n0yvy steve
______________________________ Reply Separator _________________________________
Subject: Cement curing time....
Author: Tom Francis <tomf@neca.com> at ccmgw1
To: <towertalk@contesting.com>
Date: 9/25/96 11:53 AM
Hi all:
Ok, all you civil engineering types and persons
who have experience with this...
I'm putting in a second tower, a 70' crank-up,
and am planning on using a sonotube (five feet in
diamater by six feet deep) as a form.
Any hints as to what I can expect for curing time?
Thanks in advance.
73
Tom, NM1Q (tomf@neca.com)
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