Results of a water vapor transmission round-robin test using cup methods
Hansen, K. K. and Bertelsen, N. H.
1996
Water Vapor Transmission Through Building Materials and System: Mechanisms and Measurement, ASTM STP 1039, H. R. Trechsel and M. Bomberg, Eds., American Society for Testing and Materials, Phila-delphia, pp. 91-100
water vapor transmission, testing, cup methods, round-robin tests
Hansen, K. K. and Bertelsen, N. H., (1996), "Results of a water vapor transmission round-robin test using cup methods", Water Vapor Transmission Through Building Materials and System: Mechanisms and Measurement, ASTM STP 1039, H. R. Trechsel and M. Bomberg, Eds., American Society for Testing and Materials, Phila-delphia, pp. 91-100.
| Abstract: |
| Ten institutes and laboratories from the Nordic countries participated in the round-robin test. The materials used were 12-mm porous board, 40-~Lm 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.
Appears in Trechsel, H. R. and Bomberg, M., (Eds), 1996, Water vapor transmission through building materials and system: mechanisms and measurement |
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