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BS EN ISO 12571:2021 – TC

BS EN ISO 12571:2021 – TC

$186.33

Tracked Changes. Hygrothermal performance of building materials and products. Determination of hygroscopic sorption properties

Published By Publication Date Number of Pages
BSI 2021 60
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This document specifies two alternative methods for determining hygroscopic sorption properties of porous building materials and products:

  1. using desiccators and weighing cups (desiccator method);

  2. using a climatic chamber (climatic chamber method).

The desiccator method is the reference method.

This document does not specify the method for sampling.

The methods specified in this document can be used to determine the moisture content of a sample in equilibrium with air at a specific temperature and humidity.

PDF Catalog

PDF Pages PDF Title
36 National foreword
38 European foreword
40 Foreword
41 1 Scope
2 Normative references
3 Terms and definitions, symbols and units
3.1 Terms and definitions
42 3.2 Symbols and units
4 Principle
4.1 Sorption curve
4.2 Desorption curve
43 5 Apparatus
5.1 Desiccator method
5.2 Climatic chamber method
6 Test specimens
6.1 Specification of the test specimens
6.2 Number of test specimens
7 Procedure
7.1 Test conditions
44 7.2 Desiccator method
7.2.1 General
7.2.2 Sorption curve
45 7.2.3 Desorption curve
46 7.3 Climatic chamber method
7.3.1 Sorption curve
47 7.3.2 Desorption curve
8 Calculation and expression of results
8.1 Hygroscopic sorption
8.2 Equilibrium moisture content curves
48 9 Accuracy of measurement
9.1 Error in moisture content
9.2 Control of environmental conditions
9.2.1 Desiccator method
49 9.2.2 Climatic chamber method
10 Test report
50 Annex A (informative) Air relative humidities above saturated solutions in equilibrium
53 Annex B (informative) Preparation of saturated solutions
56 Annex C (informative) Example of the procedure for determining a point on a sorption curve
57 Annex D (informative) Method using a glass jar
59 Bibliography

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BS EN ISO 12571:2021 - TC
$186.33