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Cal Chlor Test

#1
Set to perform my first MVER test in over a year!! Anybody doing many of these anymore??? Hope I remember how. Big Grin
JK Nixon
Concrete Restoration Services, LLC
Pittsburgh, PA
http://www.rhtester.com
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#2
Did a couple last year. I think they changed the rules, better check. Also, I never let the dish sit out open, everything is ready and weighed prior to setting. Will you grind it and come back the next day or just plop'r down on the existing surface?
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#3
I was just messin with you guys. Everything will be according to ASTM F1869-11. That's the latest version I'm aware of. Always prep to CSP 1 or 2, 24 hours before placing the test kits. Can't tell you the number of people who just grind and slap the kits downHuh

A painter, of all people told me this morning he was just on a job where the tester did exactly that, AND placed all the kits in the middle of the room. ASTM actually leaves it up to the general discretion of the tester where to place the kits. Obviously, this person didn't even think about the variables that can occur from perimeter walls to interior areas. Ugh! No wonder we still have failures on "tested" slabs!!!Huh
JK Nixon
Concrete Restoration Services, LLC
Pittsburgh, PA
http://www.rhtester.com
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#4
I knew that you were messin with us, as I with you. I have but one question. My question is obvious though. Do I have to say it? Rolleyes
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#5
Ya, I think you'd better state the ??? It's almost 7 pm here, been a long day and I had a relaxing beverage or two already...in other words, I'm stumped.
JK Nixon
Concrete Restoration Services, LLC
Pittsburgh, PA
http://www.rhtester.com
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#6
(01-15-2013, 04:56 PM)CCR Wrote:  Ya, I think you'd better state the ??? It's almost 7 pm here, been a long day and I had a relaxing beverage or two already...in other words, I'm stumped.

Just wondering why your even doing a CaCl test in the first place. Smile
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#7
Cal. Chlor. test was requested by the epoxy manufacturer. As far as I can tell, (most of) the epoxy guys aren't recognizing RH testing yet. And if they let you do RH testing, the first question is: "If it measures 85%, what is that in Lbs. per 1,000 sf in 24 hours?" And when you try to explain the two are measuring two different things, they just don't seem to get it (just my experience). Now if I perform both tests, and the RH is 90% and Cal. Chlor. is say, 4lbs., what do you think they want to do? INSTALL IT!!!! Sad
JK Nixon
Concrete Restoration Services, LLC
Pittsburgh, PA
http://www.rhtester.com
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#8
Yup, I had an outfit call me from Phoenix asking if I would come up and do CaCl for epoxy. I said no thanks and asked why are they doing that. It takes to many trips for one thing. Thats what I dislike the most.
Never had a floor fail when I did a CaCl test though. Must be lucky I guess. Cool
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#9
You're right about the extra trips for sure. I just charge for the extra mobilization and tell them that's the ASTM testing standard. If they don't like it, they can call somebody else and waste time and money.

As far as RH for epoxy, I'm waiting on word to proceed with RH testing at another epoxy job, but this one's failing. Turns out someone did CaCl, but not sure if it was done per F1869. More on that one later if I get it.
JK Nixon
Concrete Restoration Services, LLC
Pittsburgh, PA
http://www.rhtester.com
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#10
Good ol' MVER. You must feel so nostalgic JK! We still have some carpet manufacturers who spec MVER. The Carpet Standard has not been reviewed for a while, at least not the testing part. I'm dreading my first official test job being MVER.

Do you leave 24 hours between grinding and placing the kit regardless of the subfloor? 1869 says you don't need to for new concrete or where coverings were removed minimum 30 days prior so I'm assuming that it's a good idea to do it anyway.

Also, pardon my ignorance, can someone explain the difference between lightweight and heavyweight- I know it's to do with the density of the aggregate but is there a clear boundary of definition or is it a shade of grey- if that makes sense..?
The problem with socialism is that you soon run out of other people's money.
- Margaret Thatcher

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