foam removed on two courses before repairs
Last Post 20 Jul 2011 09:49 AM by Jerry Coombs. 7 Replies.
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tjetsonUser is Offline
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18 Jul 2011 10:29 PM
removed 2blocks of foam on graveled icf foundation for anyone interested in seeing it.. noticed a weird occurrence while removing the foam. It is about +35(c) outside right now and while I would remove the foam there would be water droplets and sweating on the plastic ties, and the concrete was a little bit damp on the surface. anyone know what would cause that? in such hot dry weather.

http://astro.cisco.ca/gallery3/index.php/outside

arkie6User is Offline
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19 Jul 2011 12:13 AM
Why did you remove the foam?
tjetsonUser is Offline
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19 Jul 2011 01:31 AM
original contractor botched the job two years ago, recouped most of the money and now its time to repair it.

going to take alot of chipping and alot of sikka.

we are going to remove another course of block and chaise the honey combs up and then spray foam it once repaired and water proof the spray foam
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19 Jul 2011 07:11 AM
Other than a few feet of exposed rebar, what is the significance of this condition? Is this home built in a high seismic zone? I've never heard of sikka and a google search didn't turn up anything either.
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19 Jul 2011 07:36 AM
Is there a roof or anything on the top? If not, when it rains, water can get between the foam and the concrete from the exposed opening at the top. Because of the insulation, it'd probably stay wet/damp in there for a long time.

Looks like they didn't use a chip-mix. Also, some of that rebar is real close to the outside of the form. How thick is the wall.
tjetsonUser is Offline
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19 Jul 2011 01:38 PM
8" thick wall
schlegelUser is Offline
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19 Jul 2011 07:12 PM
Very basic ... concrete was colder than ambient air therefore condensation took place, water condensing from the hotter air on the colder concrete!
Jerry D. Coombs, PEUser is Offline
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20 Jul 2011 09:49 AM
One of 2 thing, based on this info. Most likely, it's "bleed water". That's the excess water in the concrete that isn't used in the hydration process. It migrates toward the surfaces and collects there because it can't get through the foam. It does eventually. I've seen the water run down the wall and puddle on the floor in humid areas. The second is rare, and only if it's been in place a while. If it's exposed to exterior water for a length of time, it goes through the ICF jopints inward. Not likely.
Jerry D. Coombs, P.E.<br>Coombs Engineering, P.C.<br>

<br>You can have with quality; You can have it fast; You can have it cheap.
Pick any two.
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