Technical > Home Improvement > cement experts - does this look right?

reply to dib22

Re: cement experts - does this look right?

reply to dib22
UGH Honeycomb in concrete NOT GOOD ever.

»www.concreteconstruction.net/rep···ids.aspx

reply to dib22
You're looking at aggregate pop-out in the future when water gets into those voids and exerts pressure, nevermind when it freezes and expands.

The exposed rebar is also giving water a conduit to rust the rebar to no end, effectively making it useless.

I used to do concrete pour inspections up here, and I would have failed an inspection for that. I highly suggest you do the same.

reply to dib22
If it is a tract home he would still have a say by contacting the inspection authority himself.
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reply to dib22
I'd say that's horrendous.

Do-over.

Problem is they'll try and jack up expenses somewhere to cover it.

reply to dib22
That is sub-par work.

I just had one poured for a room addition and it was fairly smooth throughout with no gravel showing.

Dave

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I may have been born yesterday. But it wasn't at night.

reply to sancraig

reply to dib22
Do NOT let them backfill, patch, or otherwise cover this up before there is a city building inspection && an inspection by a structural engineer you hire.

Concrete vibration (consolidation) is something that is both easy to over-do & under-do. Over-do and the aggregate falls to the bottom; under-do and you get what's in the photos.

I always prefer to order self-consolidating concrete for large-scale foundation work (ie. Lafarge Agilia - or other similar 'plasticized' products from others) and then minimally vibrate using a 3/4"-1" vibrator. I have numerous core samples of concrete pour/placed this way and they always show proper uniform consolidation.

reply to dib22
I'm a little late to the party but let me add my 2 cents anyway. In your first pic the honeycomb is so deep I can see the rebar. Whenever rebar is visible to the naked eye it's a problem and in no way can that be passed off as ok or good enough.

reply to nonymous
Yes, if they poured an entire homes foundation, and this was the the only issue he should count himself lucky.

Not to say he should accept this but there are much worse pours than that. Could of had a cold joint, could have been much worse.

Hell seen worse on bridge abutments, guess what they did? They patched it.

If it were my house I would rather them patch this 2'x2' area than cut it out and re-pour it with a seam. I think everybody is very optimistic thinking its all going to be re-poured cause of a 2x2 area.

Op please let us know what becomes of this.

Thanks

reply to dib22
Ok I mentioned it to him and he was told by the general contractor that it was "ok", I asked him if he mentioned that rebar was exposed and he said he did... great ehh?

From his understanding inspection will happen tue or wed.

Will update when he tells me what they said.

My understanding is that you want a nice solid sealed stem wall no matter what, but this house will be bricked... could they be counting on the brick to protect this section?

Could it be sealed to prevent the water if indeed it has the structural integrity?

reply to dib22
Exposed rebar will rust.
Rust expands more than the steel, cracking the concrete.
What others said - take it up with the contractor, their fuck-up, their dime.

Well, the first option would have the contractor guarantee it for 20 years minimum. The second option is to call in independents for analysis, and then sue.

Gotta love the ethics these days.
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I'm not anti-social, I just don't like stupid people.

True enough. But, the cost down the road may make it viable, especially if there is negligence.

Admittedly, this may be a 50-50 proposition though. It's a CF for the owner.
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I'm not anti-social, I just don't like stupid people.

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