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Re: H2O at Bottom of Forms
- To: <seaoc(--nospam--at)seaoc.org>
- Subject: Re: H2O at Bottom of Forms
- From: "Michael Donoghue" <cmd(--nospam--at)ibm.net>
- Date: Thu, 14 May 1998 15:08:26 -0500
Providing the water is "clean" at hat height you
ought to tremie the concrete into place. Place the end of the tremie in
the water and take the usual precaution and you shoud have a good placement
assuming the mix design is appropriate.
I got another problem I'm hoping you all may
be able to help me with.
The form work for a 15 foot high basement wall is in place
with the reinforcing in place as well. We got rain (hasn't
everyone). Anyways, there is probably standing water at the bottom of
the formed wall in the key way (as can be seen else where on the site where
the walls are not formed). There appears to be no way to remove the
water without removing one side of the forms. Besides, what's to
prevent mother nature from delivering another rain shower once the form is
removed and then replaced?
My question, does anyone see a potential problem with
pouring the concrete? The concrete will fall the 15 feet to the bottom
of the form and should displace the water. I'm hoping that the water
will flow through the cracks of the form work and to the top. I am
aware that there is potential to separate the paste of the concrete at the
bottom and edges of the concrete and therefore a bond will not occur with
the aggregate. However, I believe this will only happen at the surface
and therefore may be repaired once the forms are stripped. My concern
is if this happens in the core of the concrete where I cannot see/detect any
voids or problems.
Does anyone have any advice?
Thanks in advanced.
Mike Brown, P.E.