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Old 02-20-2014, 07:11 AM   #1
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Default Anti Static/ Anti Conductive Epoxy Floors.

Does anyone have experience with these systems and testing? We did 6 floors. 5 floors six months ago that passed the ohms testing. 6 th floor was tested and failed after 48 hour cure. Question: Is cure cycle effecting the ohms readings? Full cure is 7-14 days per data sheets. 3 coat system over shot blast floor to ICRI Level 3.
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Old 02-20-2014, 12:06 PM   #2
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I'm not certain, but part of the ant static or electro static discharge (ESD) epoxy floor coating systems, are suppose to be some what conductive.

For those who don't know, like me, this Link explains a little about ESD


Note; Could it be that the conductivity of the epoxy floor system has been compromised at that sixth floor level, either during installation or afterwards?

Last edited by CApainter; 02-20-2014 at 12:17 PM..
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Old 02-20-2014, 02:28 PM   #3
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I do commercial work and quite a bit of industrial and for quite a bit of hours by now- and I have no clue as to this is about.
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Old 02-20-2014, 07:23 PM   #4
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Quote:
Originally Posted by Oden
I do commercial work and quite a bit of industrial and for quite a bit of hours by now- and I have no clue as to this is about.
Me neither!!

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Old 02-20-2014, 08:10 PM   #5
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Commercial information on PT is more like how do I cut base... I think this is way too complex for most here.

My next epoxy job I want to achieve a CSP3. Right now I just do a 2 but I'm ready to step up. By the way, the polyurea worked very nicely in the cracks on my last job.
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Old 02-21-2014, 12:12 AM   #6
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I don't buy that NACE doesn't know what was required to achieve the ESD epoxy floor coating, and I would disagree that PT is only geared towards painters with difficulty painting around cove base. OK, guilty as charged. Cove base is...REALLY SCARY!!
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Old 02-22-2014, 08:16 AM   #7
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I would question the calibration of the testing equipment.
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Old 02-22-2014, 02:18 PM   #8
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Quote:
Originally Posted by squid
I would question the calibration of the testing equipment.
Retested the floor again yesterday. Ohms came way down but still out of Navy Spec. 5 out of the 6 floors passed. Hoping the cure cycle is the issue.
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Old 02-22-2014, 02:26 PM   #9
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Quote:
Originally Posted by NACE
Retested the floor again yesterday. Ohms came way down but still out of Navy Spec. 5 out of the 6 floors passed. Hoping the cure cycle is the issue.
sounds like it is heading in the right direction. I guess.
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Old 02-22-2014, 02:29 PM   #10
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NACE,

Did the epoxy floor system, you installed, require conductive strips as described in the link I provided?
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Old 02-22-2014, 06:35 PM   #11
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Quote:
Originally Posted by CApainter
NACE, Did the epoxy floor system, you installed, require conductive strips as described in the link I provided?
Yes. Copper.
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Old 02-22-2014, 08:37 PM   #12
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Quote:
Originally Posted by NACE View Post
Yes. Copper.
Interesting.

What do they bond these copper strips to if the concrete isn't conductive?
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Old 02-22-2014, 09:35 PM   #13
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Quote:
Originally Posted by CApainter View Post
Interesting.

What do they bond these copper strips to if the concrete isn't conductive?
Steel columns.
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Old 02-23-2014, 07:39 AM   #14
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Quote:
Originally Posted by NACE View Post
Steel columns.
Copper is bonded to steel? I was taught that mixing metals will cause electrolysis, corrosion and high resistance electrical connections. If measurements are taken from the floor to electrical ground, you're reading through these connections, right?
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Old 02-23-2014, 08:04 AM   #15
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Quote:
Originally Posted by squid
Copper is bonded to steel? I was taught that mixing metals will cause electrolysis, corrosion and high resistance electrical connections. If measurements are taken from the floor to electrical ground, you're reading through these connections, right?
We did not install them.
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Old 02-23-2014, 08:19 AM   #16
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Who does the testing? Did they install them? Just curious. Hopefully the conductivity will improve with time. Keep us posted. Some of us are interested.
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Old 02-23-2014, 10:02 AM   #17
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Quote:
Originally Posted by NACE View Post
Retested the floor again yesterday. Ohms came way down but still out of Navy Spec. 5 out of the 6 floors passed. Hoping the cure cycle is the issue.
NACE,

Your point of the cure cycle contributing to the lack of conductivity, makes more sense to me now when I consider how the suspended conductive particles in the liquid coating, may need the resins and vehicle to chemically cure completely before the particles can settle and bind themselves tightly to each other. Space between these particles during curing may act as an insulator. I would also imagine there is an evaporative component to the cure cycle if the coating is not a 100% SBV epoxy. There could be a number of reasons for a slow cure. Do you have to add the conductive material to the coating?

As far as electrolysis contributing to less conductivity at the contact points between dissimilar metals, there would have to be moisture in the form of ionized liquid to complete that cathodic reaction. But I am suspecting there is a weak bond at the metal conductors, or maybe it's due to the distance of the sixth floor as it relates to the ground current.

I have no idea. But, it's fun theorizing about it!

Last edited by CApainter; 02-23-2014 at 10:05 AM..
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Old 02-24-2014, 06:02 PM   #18
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Found out today that the testing parameters used by the Navy were from 1997. The new parameters are from 2007 which puts us in full compliance. Thanks for your interest. Just saved us some big bucks.
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Old 02-24-2014, 06:10 PM   #19
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Quote:
Originally Posted by NACE View Post
Found out today that the testing parameters used by the Navy were from 1997. The new parameters are from 2007 which puts us in full compliance. Thanks for your interest. Just saved us some big bucks.
Treat yourself and the wife to dinner this week, you've earned it now.
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Old 06-24-2014, 07:19 AM   #20
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There is lots of problem to start a new business but When I read this post then I resolved my half of the business related problem.
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