Are these tests really accurate?

Posted by: reality

Are these tests really accurate? - 08/13/08 06:43 PM

Hi guys,

I found this article by Howard Kanare (who apparently is an extremely well-known expert) about concrete moisture, and it seems to say CaCl testing isn't accurate like I would normally assume, and it began qualitative, and migrated to quantitative with no scientific backing.

Here's Howard's Moisture Measurement Article.

Is this for real?!? I've been researching it, and I can't find anything that would prove it wrong, but it just seems, well, revolutionary.

Do you guys know anything about this?

Thanks.
Posted by: reality

Re: Are these tests really accurate? - 09/13/08 12:23 AM

Anybody?
Posted by: reality

Re: Are these tests really accurate? - 09/16/08 02:57 AM

This seems to be a very slow forum. Is anybody out there?
Posted by: CR2

Re: Are these tests really accurate? - 09/19/08 02:06 AM

It's not a slow forum, the thing is that not too many people have the time to worry about this issue,most of the OPs are either concrete pros or DYS and are not familiar with the topic,I think is a subject more for behind the desk guys than for field guys, my example, I've been doing floors for a long time,8ft below the ground(basements),sometimes with water uzzing through the block mortar joints, on $100s and $1000000s houses and I've never seen anybody showing up to do a moisture test, got it?
The question is not if the tests are accurate and important, but to whom , you might be looking for answers in the wrong forum
Posted by: PatMkcr

Re: Are these tests really accurate? - 03/13/10 10:59 AM

I think that this is very subjective and in the eyes of the beholder. Its a little biy like looking into the clouds. 2 different people will tell you that they see completely differnt things.

When it comes to moisture, detectors are alright but I've seen them emit high readings in buildings where the atmospheric humidty was extremly low, where the walls were above ground and well protected, yet the moisture meter level was high.

You have to do a physical examination lookibg for moisture or water stains, visible mold or mildew, insect problems or other staining.

A surface mold test helps to because mold needs moisture to grow. If the mold count is low, that's a good indicator that the material moisture level is also low.
Posted by: concretecost

Re: Are these tests really accurate? - 05/15/10 11:08 PM

Really nice article what part are you having trouble believing?
Posted by: CharlesGary

Re: Are these tests really accurate? - 03/21/13 02:57 AM

I've been doing floors for a long time,8ft below the ground(basements),sometimes with water uzzing through the block mortar joints.

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Posted by: swalker

Re: Are these tests really accurate? - 04/10/16 04:50 PM

The article is revolutionary indeed. I believe I've read it a long time ago but I can't remember where. Good thing I found it here as I'm doing a bit of research about it as well.
Posted by: Chris Purvis

Re: Are these tests really accurate? - 04/24/19 11:21 AM

That's a comprehensive articled indeed. We cannot prove that it is wrong though.

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Posted by: William Clark

Re: Are these tests really accurate? - 05/17/19 04:50 PM

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Posted by: Robert Sharp

Re: Are these tests really accurate? - 05/31/19 02:42 AM

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