Effects of Drying Conditions, Phase Transformations, and Carbonation Reactions on Measurements of Sorption Isotherms of Building Materials

Kenneth Wilkes; Jerry Atchley; Phillip Childs; Andre Desjarlais

doi:10.1520/STP45404S

SYMPOSIA PAPER Published: 01 January 2007

STP45404S

Effects of Drying Conditions, Phase Transformations, and Carbonation Reactions on Measurements of Sorption Isotherms of Building Materials

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The sorption isotherm is one of the basic material properties used in hygrothermal modeling of building envelope performance. Measurement of this properly is deceptively simple. Specimens are first dried and then exposed to a series of higher relative humidities to develop a curve of moisture content versus relative humidity at constant temperature. This paper discusses some confounding effects that we have observed while performing measurements on a number of common building materials. Materials studied included gypsum products, wood and wood products, and cementitious materials.

Author Information

Wilkes, Kenneth, E.

Oak Ridge National Laboratory, Oak Ridge, Tennessee

Atchley, Jerry, A.

Oak Ridge National Laboratory, Oak Ridge, Tennessee

Childs, Phillip, W.

Oak Ridge National Laboratory, Oak Ridge, Tennessee

Desjarlais, Andre

Oak Ridge National Laboratory, Oak Ridge, Tennessee

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Details

Developed by Committee: C16

Pages: 45–54

DOI: 10.1520/STP45404S

ISBN-EB: 978-0-8031-6243-3

ISBN-13: 978-0-8031-3422-5

Effects of Drying Conditions, Phase Transformations, and Carbonation Reactions on Measurements of Sorption Isotherms of Building Materials

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