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Modified cup for testing of water vapour transmission through thick, permeable materials

Bomberg, M., Pazera, M., Haghighat, F. and Grunewald, J.
2002
6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17
water vapour permeance, water vapour transmission, dry cup, wet cup, modified cup, steady state, experimental errors

Bomberg, M., Pazera, M., Haghighat, F. and Grunewald, J., (2002), "Modified cup for testing of water vapour transmission through thick, permeable materials", 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17.
Abstract:
This paper presents an evaluation of a modified cup test for determining the water vapour transmission properties of thick, permeable materials. Exterior Insulation Finish Systems (EIFS) lamina, were tested separately or together with a 25-mm thick layer of expanded polystyrene. Testing over one month period revealed that steady state conditions had not yet been established. It is evident that steady state methods, even in improved form such as this modified cup method, are not suitable for testing performance of the multi-layered systems with significant moisture capaci ty.

see

ASTM, 1993, E96-93 Standard test methods for water-vapor transmission of materials
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Author Information and Other Publications Notes
Bomberg, M.
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Pazera, M.
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Haghighat, F.
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Grunewald, J.
Technology University of Dresden, Faculty of Architecture, Institute of Building Climatology Zellescher Weg 17, 01069 Dresden
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  4. Numerical and experimental investigation of coupled heat and moisture transport problems
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