ДСТУ EN ISO 12572:2022 Гигротермические характеристики строительных материалов и изделий. Определение паропроницаемости (EN ISO 12572:2016, IDT; ISO 12572:2016, IDT)



ДСТУ EN ISO 12572:2022
(EN ISO 12572:2016, IDT; ISO 12572:2016, IDT)

Гігротермічні властивості будівельних матеріалів та
виробів. Визначення паропроникності

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

1 Scope

2 Normative references

3 Terms, definitions, symbols, units and subscripts

3.1 Terms and definitions

3.2 Symbols and units

3.3 Subscripts

4 Principle

5 Apparatus

6 Test specimens

6.1 General principles for preparation of test specimens

6.2 Dimensions of test specimens

6.3 Number of test specimens

6.4 Conditioning of test specimens

6.5 Testing low resistance specimens

7 Procedure

7.1 Test conditions

7.2 Preparation of specimen and test assembly

7.3 Test procedure

8 Calculation and expression of results

8.1 Mass change rate

8.2 Density of water vapour flow rate

8.3 Water vapour permeance

8.4 Water vapour resistance

8.5 Water vapour permeability

8.6 Water vapour resistance factor

8.7 Water vapour diffusion-equivalent air layer thickness

9 Accuracy of measurement

9.1 General

9.2 Specimen area

9.3 Specimen thickness

9.4 Sealants

9.5 Weighing precision

9.6 Control of environmental conditions

9.7 Variations in barometric pressure during test

10 Test report

Annex A (normative) Methods suitable for self-supporting materials

Annex B (normative) Methods suitable for loose fills

Annex C (normative) Methods suitable for membranes and foils

Annex D (normative) Methods suitable for mastics and sealants

Annex E (normative) Methods suitable for paint, varnishes, etc

Annex F (normative) Correction for the effect of a masked edge of a specimen

Annex G (normative) Correction for resistance of air layers

Annex H (normative) Method for calculating the water vapour resistance of the air layer in the cup

Annex I (informative) Weighing repeatability, weighing interval and specimen size needed to achieve desired accuracy

Annex J (informative) Conversion table for water vapour transmission units

Bibliography