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Pre Cast / Self Leveling
05-27-2013, 10:05 AM
Post: #7
RE: Pre Cast / Self Leveling
(05-23-2013 01:31 PM)jhout32 Wrote:  I have a job that has structural plank with a 3" cement based topping over it, can RH testing be performed to verify the moisture content of the topping? I have attached the mix specifications with page 1 being the topping over the plank.

Is the topping poured directly on the concrete or is there a barrier between the two?

You will have the moisture in the topping and the moisture in the precast. If the precast was clean and unsealed, I'd consider it part of the whole system as far as moisture goes.

As a direct answer to your question though, yes you can test the topping layer using Rapid RH probes. If the precast was sealed or the topping was poured on a waterproof membrane I'd drill 20% of the depth of the topping layer.

Do not drill into the precast plank without locating the tensioning cables. Exclamation

JD Grafton
Concrete Answers for Flooring Problems
[email protected]
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Messages In This Thread
Pre Cast / Self Leveling - JDJR - 01-21-2013, 11:45 AM
RE: Pre Cast / Self Leveling - CCR - 01-24-2013, 05:05 PM
RE: Pre Cast / Self Leveling - jhout32 - 05-23-2013, 01:31 PM
RE: Pre Cast / Self Leveling - eaadams - 05-24-2013, 09:57 AM
RE: Pre Cast / Self Leveling - CCR - 05-26-2013, 05:32 AM
RE: Pre Cast / Self Leveling - eaadams - 05-26-2013, 10:37 AM
RE: Pre Cast / Self Leveling - CC Solutions - 05-27-2013 10:05 AM