ASTM D 6490 Standard Test Method for Water Vapor Transmission of NonFilm Forming Treatments Used on Cementitious Panels

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ASTM D 6490 Document Information:

Title
Standard Test Method for Water Vapor Transmission of NonFilm Forming Treatments Used on Cementitious Panels

ASTM International

Publication Date:
Dec 10, 1999

Scope:

This test method covers the determination of the rate at which water vapor passes through non film forming treatments, such as silanes, siloxanes and blends of silanes/siloxanes applied to cementitious substrates.

This test method covers the use of the wet cup technique, which most closely approaches the exterior conditions for use for these materials. Other conditions can be used if agreed upon between purchaser and supplier. Agreement should not be expected between results obtained by different methods or test conditions.

The values stated in SI units of measurement are designated as the standard. Factors for conversion to inch-pound units are given in 9.2.1.1 and 9.2.2.1.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords:

perms
permeance
permeability
water vapor transmission
water vapor permeance

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