Results of a Water Vapor Transmission Round-Robin Test Using Cup Methods

KK Hansen; NH Bertelsen

doi:10.1520/STP22961S

SYMPOSIA PAPER Published: 01 January 1989

STP22961S

Results of a Water Vapor Transmission Round-Robin Test Using Cup Methods

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Ten institutes and laboratories from the Nordic countries participated in the round-robin test. The materials used were 12-mm porous board, 40-μm polyethylene foil, and 0.8-mm tarred paper. The measurements were performed both as wet-cup tests and as dry-cup tests. The round-robin test shows that the uncertainty of the measurements is considerably larger than the variations of the water vapor resistance (WVR) among the individual test specimens. It is also shown that the test results were greatly influenced by the moisture levels. The results show about 15% gross errors in the test.

Author Information

Hansen, KK

Building Materials Laboratory, The Technical University of Denmark, Lyngby, Denmark

Bertelsen, NH

Building Technology, Technological Institute, Taastrup, Denmark

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Details

Developed by Committee: C16

Pages: 91–100

DOI: 10.1520/STP22961S

ISBN-EB: 978-0-8031-5094-2

ISBN-13: 978-0-8031-1254-4

Results of a Water Vapor Transmission Round-Robin Test Using Cup Methods

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