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Old November 8th, 2015, 04:07 PM   #17001
Wbino49
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That concrete is only going to get worse,
I wonder if at any point they will cover the concrete with sheet metal......?
If I paid a few million (ok lots of millions) for a room, I would not want to look out my window at cracked and pitted concrete.
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Old November 8th, 2015, 04:58 PM   #17002
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Quote:
Originally Posted by Wbino49 View Post
That concrete is only going to get worse, I wonder if at any point they will cover the concrete with sheet metal......? If I paid a few million (ok lots of millions) for a room, I would not want to look out my window at cracked and pitted concrete.
This building has zero problems with it's concrete. That article sounded like total BS, in order to throw some dirt at 432 that I assume is stealing attention from other luxury buildings.

It's pretty natural that they hire a company to clean, renovate (I'm pretty sure the concrete has been drilled into several places for the hoist etc.), and seal the facade.
I walked by 432 several times recently, no cracks whatsoever.
We can probably safely say that it will never be clad in sheet metal. Luckily.
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Old November 9th, 2015, 04:46 AM   #17003
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Quote:
Originally Posted by generalscarr View Post
This building has zero problems with it's concrete. That article sounded like total BS, in order to throw some dirt at 432 that I assume is stealing attention from other luxury buildings.

It's pretty natural that they hire a company to clean, renovate (I'm pretty sure the concrete has been drilled into several places for the hoist etc.), and seal the facade.
I walked by 432 several times recently, no cracks whatsoever.
We can probably safely say that it will never be clad in sheet metal. Luckily.
What about the picture a few posts above this? Do you think it shows flawed concrete? It looks like that to me but the picture isn't terribly clear.

That's the only portion of the building I've seen with what looks like flawed concrete. It would be over a thousand feet above your head when you're walking by so it might not be visible from street level.
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Old November 9th, 2015, 04:53 AM   #17004
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The worst skyscraper in the midtown.
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Old November 9th, 2015, 02:21 PM   #17005
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That says something about the superb quality of the rest doesn`t it.
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Old November 9th, 2015, 10:17 PM   #17006
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as I look the other tall skyscrapers built and proposed, this tower is unique and is appreciable for its outwards simplicity.
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Old November 9th, 2015, 10:48 PM   #17007
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The taller the buildings the smaller cp looks, however if the architecture and lighting is right, a ride around the park can be otherworldly
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Old November 9th, 2015, 11:31 PM   #17008
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November 9th, 2015

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Old November 10th, 2015, 11:47 AM   #17009
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Old November 10th, 2015, 05:23 PM   #17010
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Quote:
Originally Posted by dfiler View Post
I think this photo shows some of the concrete issues that have been mentioned previously.
Honestly that looks like just some dirt to me. Like from rainfall. The way they are placed and the directions looks much more like rainfall than cracks
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Old November 10th, 2015, 09:25 PM   #17011
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Silane Sealer

Honestly, I put silane/siloxane sealant on concrete all the time.

Why wouldn't you want your concrete building to deflect water rather than absorb it? Makes sense to me!

ALSO: Note that Silane does NOT bridge cracks, so the argument that people are making about repairing cracking doesn't make a lot of sense. Silane is a water-like liquid that fills the microscopic cement pores, clogging the pores thus 'waterproofing' the concrete. It's barely discernible after it's applied.

If you wanted to bridge cracks, you'd need a much thicker product, Sika Masterprotect EL 750 for example. It has a color associated with it, so I can't see them applying a product like that for another 25-30 years, or until the concrete begins to break down from weathering.

I have a theory: They're putting the silane to seal the concrete surrounding the mechanical floors, thus keeping all of that condensation from the air handling units and chillers from discolouring/damaging the surrounding concrete over the next 30 years?
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Old November 10th, 2015, 09:55 PM   #17012
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Quote:
Originally Posted by AndyMEng View Post
Honestly, I put silane/siloxane sealant on concrete all the time.

Why wouldn't you want your concrete building to deflect water rather than absorb it? Makes sense to me!

ALSO: Note that Silane does NOT bridge cracks, so the argument that people are making about repairing cracking doesn't make a lot of sense. Silane is a water-like liquid that fills the microscopic cement pores, clogging the pores thus 'waterproofing' the concrete. It's barely discernible after it's applied.

If you wanted to bridge cracks, you'd need a much thicker product, Sika Masterprotect EL 750 for example. It has a color associated with it, so I can't see them applying a product like that for another 25-30 years, or until the concrete begins to break down from weathering.

I have a theory: They're putting the silane to seal the concrete surrounding the mechanical floors, thus keeping all of that condensation from the air handling units and chillers from discolouring/damaging the surrounding concrete over the next 30 years?

Good explanation, from somebody that actually knows about the subject.

Before your explanation, I thought the same, that that silane thing had more to do with sealing the concrete than to repair it. And I think that is something planned from the beggining and not like a last time measure. It permits the concrete to last longer and also must help with something as simple as avoiding stains. It is possible that they are using it in the entire building to protect all the concrete.
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Old November 11th, 2015, 06:34 AM   #17013
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I've got no hate for this building but don't write off the possibility of faulty concrete. Remember that there are hundreds of individual pours. It is possible that some of those were not perfect. The photo I quoted earlier honestly looks like spalled concrete with surface cracks. The photo is not clear but it does look like at least cosmetic flaws.

Bad composition, delayed pouring, rapid evaporation and other conditions can lead to rapid surface failure. Sometimes the degradation can continue over time.

Hazarding a guess, at least one of the pours had issues and sealing or resurfacing that area is the normal remediation procedure. Thst doesn't mean a catastrophe. But we shouldn't presume perfect cosmetic results when looking such a massive amount of exposed concrete.
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Old November 11th, 2015, 02:29 PM   #17014
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Construction update October 2015

Hi Guys!

There is a construction update of the month of October, it seems that the building is near of gis completion :




Thank you!!
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Old November 11th, 2015, 02:32 PM   #17015
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Amazing!
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Old November 11th, 2015, 03:18 PM   #17016
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Quote:
Originally Posted by dfiler View Post
I've got no hate for this building but don't write off the possibility of faulty concrete. Remember that there are hundreds of individual pours. It is possible that some of those were not perfect. The photo I quoted earlier honestly looks like spalled concrete with surface cracks. The photo is not clear but it does look like at least cosmetic flaws.

Bad composition, delayed pouring, rapid evaporation and other conditions can lead to rapid surface failure. Sometimes the degradation can continue over time.

Hazarding a guess, at least one of the pours had issues and sealing or resurfacing that area is the normal remediation procedure. Thst doesn't mean a catastrophe. But we shouldn't presume perfect cosmetic results when looking such a massive amount of exposed concrete.

Yes, but what AndyMEng states is that that Silane product IS NOT used when the concrete is faulty or have cracks, it is used as a mere sealant to prevent water to enter the concrete (undamaged, healthy concrete) and in no way is used to repair cracks in it, as an article posted earlier said. If there were cracks in the concrete they would need to use other products.

Of course, we can't assure that there are no cracks in the concrete, probably there are, even if superficial and not important. But the use of the Silane is not proof that there is a massive crack problem as the earlier article concluded, as it is useless for repairing cracks.

Last edited by CCs77; November 11th, 2015 at 03:26 PM.
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Old November 11th, 2015, 04:27 PM   #17017
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Pretty tall
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Old November 11th, 2015, 04:28 PM   #17018
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And looks so thin
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Old November 11th, 2015, 05:20 PM   #17019
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Quote:
Originally Posted by CCs77 View Post
Yes, but what AndyMEng states is that that Silane product IS NOT used when the concrete is faulty or have cracks, it is used as a mere sealant to prevent water to enter the concrete (undamaged, healthy concrete) and in no way is used to repair cracks in it, as an article posted earlier said. If there were cracks in the concrete they would need to use other products.

Of course, we can't assure that there are no cracks in the concrete, probably there are, even if superficial and not important. But the use of the Silane is not proof that there is a massive crack problem as the earlier article concluded, as it is useless for repairing cracks.
Why fixate only on that? Reporters routinely get the details wrong. When cracks are patched, it isn't unusual to seal the patched area afterward.

There have been reports of concrete problems and pictures appearing to show those problems, albeit a bit blurry. The fact that sealant is being used doesn't suggest that there aren't concrete problems.
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Old November 12th, 2015, 06:47 AM   #17020
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