ASTM D , Standard Test. Method for Indicating Moisture in. Concrete by the Plastic Sheet. Method. General Guidance. ASTM E , F ACI R ASTM Dpdf – Download as PDF File .pdf) or read online. 1 Sep This standard is issued under the fixed designation D ; the 1 This test method is under the jurisdiction of ASTM Committee D33 on.

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Instead, always rely r4263 in situ RH moisture testing. Ultimately, this creates an appreciably wetter condition at the surface than either the Plastic Sheet Test or any other astm d4263 test will be likely to show.

The test method involves taping an inch mm astm d4263 of polyethylene film onto a concrete slab and waiting at least 16 hours. A concrete floor slab with excess moisture pretty much guarantees a astm d4263 failure due to serious problems such as discoloration, bubbles, curling, adhesive deterioration, cupping, buckling, warping, mildew or mold.

ASTM D4263

And more importantly, expect flooring failures. For a relatively minor investment in testing equipment, contractors astm d4263 flooring installers can save considerable time and money. What happens next is that the moisture gradient will tend to disappear, bringing some moisture that was deeper down, up toward the astm d4263. The ASTM D Concrete Moisture Test A concrete floor slab with excess moisture pretty much guarantees a flooring failure due to serious astm d4263 such as discoloration, bubbles, curling, adhesive deterioration, cupping, buckling, warping, mildew or mold.


Accurate Concrete Moisture Measurement?

Any moisture condensation or observable darkening of the color of the concrete underneath the astm d4263 suggests excessive moisture and means the slab is not ready for a moisture-sensitive floor covering. No more costly, moisture-related callbacks. However, it is NOT recommended.

Its approach has been scientifically proven to provide a true picture of the overall moisture condition of the slab. An unsealed concrete slab will typically exhibit an appreciable moisture gradient, drier at the surface and wetter below.

Another plus is that the test provides hard astm d4263 expressed as percent RH that make it very easy for deciding when the slab astm d4263 dry enough for installing the finished floor.

A negative test result a astm d4263 plastic sheet with astm d4263 observable moisture underneath does not necessarily confirm that the slab is sufficiently dry. Nor does it indicate whether additional moisture is entering the slab from below, such as in the absence of a vapor retarder.


It sounds simple enough, right? Observable moisture on the underside of the plastic sheet depends on the dew point, which in turn depends on the surface x4263 of the concrete.

So astm d4263 you take the moisture gradient into account and measure moisture deeper astm d4263 the slab, expect to be misled by your test results.

The ASTM D Concrete Moisture Test

Yes, it matters a great deal. Some methods of concrete moisture testing ast, a simple, qualitative approach. However, the reverse is not true. For astm d4263 information about RH testing, click here.

No serious flooring failures due to atsm, astm d4263 moisture in the slab. Afterward, the underside of the sheet is examined for signs of moisture.

It can no longer evaporate through the surface. A positive result with observable moisture underneath the plastic sheet confirms that the concrete slab is too wet for a flooring installation. RH testing is a no brainer because astm d4263 not only makes scientific sense, astm d4263 makes economic sense too.