Abstract
Test specimens of blown cellulose insulation were placed in contact with water to initiate an isothermal moisture intake process in which liquid water was allowed to enter freely against gravity into the specimens. The transient moisture distribution in the specimens was determined using the gamma-ray attenuation method over a period of 10 days. The results indicate that, as with most porous systems, the specimens first establish a characteristic water retention curve and then undergo a unique secondary moisture transport process. This paper presents the experimental data from the investigation. The data were used to derive information on the moisture diffusivity of cellulose insulation, in relation to the secondary mois ture transport process undergone by the test specimens.
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