I have a project were Calcium Carbide testing is being used to attempt to show the performance of a topical silicate.
Is the test capable of determining Moisture Content (of the sample) once the concrete is contaminated with a silicate. I believe the surface test sample has the highest concentration of the silicate which maybe altering the results.
I believe the test is only shows the MC of the surface at best and has no way of determining to moisture reservoir that will ultimately make it's way to the surface where it will over time affect an adhesive.
The job is in the USA but the product linoleum is made in Europe by Armstrong.
The adhesive Mapei Ultra Bond G 21 2 part Urethane only references 2170 or 1869. 75 % and 5 lb .
The opposing consultant position is that the Calcium Carbide test is a valid test showing a dry condition.
My F- 2420 Dome testing reading which started out at 52% increased to 85% (a gain of 33% ) after only 5 day. Ambient conditions were under permanent house HVAC of 70 f and 40 % ambient. I did not flush the domes with Nitrogen. I have Wagner reading averaging 89 % and CC readings of 5.4 lbs.
I say the Silicate is NOT working. What say you ?
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