David
I think the concern is what "might" happen. We all know the control joints
should have been installed either during the concrete finishing or soon
after. I prefer "during" finishing as this controls shrinkage cracks that
occur during curing. However you now have cracks where you didn't intend
them. Will this lead to failure of your radiant slab tubing? I don't know.
What risk do you have if you leave it? Are you working for an Owner? Who
designed it, you, an architect, an engineer or the owner? What do they say?
If I were the architect I would be inclined to have it redone but if the
owner wants to use it sooner they may be more flexible. What does the pipe
manufacturer or heating system manufacturer say? Also, I had sent you some
info on epoxy injection and vacuum injection. Did you get any response from
them? I don't know the site conditions (the cracks need to be super-clean
for injection to work) or design requirements well enough to give any more
advice in that direction. 
That is about the extent of what I can do from my "armchair". I'd be happy
to help further but would need more info. 
Eric 

 -----Original Message-----
From: 	[log in to unmask] [mailto:[log in to unmask]]
Sent:	Wed Jul 19 08:21:42 2006
To:	[log in to unmask]
Subject:	Re: [BP] Fwd: [BP] Concrete Epoxy Repair

Anybody have any ideas on the concrete thing?????????????????????????????
 
David Dauerty
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To terminate puerile preservation prattling among pals and the
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<http://listserv.icors.org/archives/bullamanka-pinheads.html>