A Logical extension of the ASTM standard E96 to determine the dependence of water vapour transmission on relative humidity

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TypeArticle
Journal titleASTM Special Technical Publication
Volume1320
Pages456470; # of pages: 15
AbstractIt is well known that the water vapour transmission properties of hygroscopic building materials depend on the local relative humidities(rh). Traditionally, the ASTM Standard E96 specifies only two conditions of rh. The dry cup method in the standard corresponds to a mean rh of 25 % and the wet cup to 75 %. This information is not enough to describe the behaviour of the material through the entire range of rh. European standards have already proposed an extension of the existing standard to address this issue. ASTM standard should follow this change. A logical extension of the E96 standard to include the effect of rh on water vapour transmission properties has been proposed and is being discussed by one of the C16 Committee Task Groups.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierASTM-STP-1320
NRC number40105
6891
NPARC number20358931
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Record identifier3c5216bb-b988-4b0e-964e-ac0537e4ccf0
Record created2012-07-20
Record modified2016-05-09
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