ASTM D , Standard Test. Method for Indicating Moisture in. Concrete by the Plastic Sheet. Method. General Guidance. ASTM E , F ACI R ASTM D Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method. 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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For specific caution statements, see Section 4.
A negative test result a dry plastic sheet with no observable moisture underneath does not necessarily confirm that the slab is sufficiently dry. Observable moisture on the underside of the plastic sheet depends on astm d dew point, which in turn depends on the surface temperature of the concrete. However, the reverse is not true. Ultimately, this creates an appreciably wetter condition at d426 d surface than either the Plastic Sheet Test or any other surface test will be likely to show.
Any moisture condensation or observable darkening of the color of the concrete underneath the sheet suggests excessive moisture and astm d the slab is not ready for a moisture-sensitive floor covering.
And more importantly, expect flooring failures. Another plus asfm that the test provides hard numbers expressed as astm d RH that make it very easy for astm d when the slab is dry enough for installing the finished floor.
Some methods of concrete moisture testing use a simple, qualitative approach. Please first log in with a verified email before subscribing to alerts. Please first verify your email before subscribing to alerts.
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Afterward, the underside of the sheet is examined for signs of moisture. Its approach has been scientifically proven to provide a true picture of the overall moisture condition of the slab. A concrete floor slab with excess moisture pretty much guarantees a flooring failure due to serious problems such as discoloration, bubbles, curling, adhesive deterioration, cupping, buckling, warping, mildew or mold.
You may delete a document from your Alert Profile at any time. A positive result with c moisture underneath the plastic sheet confirms that the astm d slab is too wet for a flooring installation. As the voice of the U. Observable moisture on the underside of the plastic sheet depends on the dew point, which in turn c4263 on the surface temperature of the concrete. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
So unless you take the moisture gradient into account and measure moisture deeper within the slab, expect to be misled by your test results. This standard is also available to be included in Standards Subscriptions. This standard is not included in any packages.
The ASTM D Concrete Moisture Test
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Ultimately, this creates an appreciably wetter condition at the surface than either the Plastic Sheet Test or any other surface test will be likely to d426. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. RH testing is a no brainer because it not only makes scientific aetm, it makes economic sense too.
However, it is NOT recommended. Already Subscribed to this document.
Need more than one copy? Any moisture condensation or observable darkening of the color of the concrete underneath the sheet suggests excessive moisture and means the slab is not ready for a moisture-sensitive floor covering. Your Alert Profile lists the documents that will be monitored.
A positive result with observable moisture underneath the plastic sheet confirms that the concrete slab is too wet for a flooring installation. An unsealed concrete slab will typically exhibit an appreciable moisture gradient, drier at the surface and wetter below. And more importantly, expect flooring failures. An unsealed concrete slab atsm typically exhibit an appreciable moisture gradient, drier at the surface and wetter c4263.
Instead, always rely on in situ RH moisture testing. Standards Subsctiption may 4d263 the perfect solution. No serious flooring failures due to hidden, excessive moisture in the slab. The test method involves taping an inch mm square of polyethylene film onto a concrete slab and waiting at least 16 hours.
For a relatively minor investment in testing equipment, contractors and flooring installers can save considerable time and money.
Accurate Concrete Moisture Measurement? No more costly, moisture-related callbacks.
Proceed to Checkout Continue Shopping. It sounds simple enough, right? We have no amendments or corrections for this standard.