ДСТУ EN ISO 4590:2019 Поропласты жесткие. Определение процентного объема открытых и закрытых пор (EN ISO 4590:2016, IDT; ISO 4590:2016, IDT)



ДСТУ EN ISO 4590:2019
(EN ISO 4590:2016, IDT; ISO 4590:2016, IDT)

Поропласти жорсткі. Визначення відсоткового об’єму відкритих
та закритих пор

 

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

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Principle

5 Test specimens

5.1 Number

5.2 Preparation

5.3 Dimensions

5.4 Sectioning of test specimens

6 Conditioning and test atmospheres

7 Measurement of surface area S and geometrical volume V_g

8 Determination of impenetrable volume V_i  by method 1: pressure variation (pyknometer)

8.1 Principle of method 1

8.2 Description of apparatus for method 1

8.3 Calibration of pyknometer apparatus

8.4 Procedure for method 1

8.5 Calculation for method 1

9 Determination of impenetrable volume Vi by method 2: volume expansion

9.1 Principle of method 2

9.2 Description of apparatus for method 2a

9.3 Calibration of apparatus for method 2a

9.4 Procedure and calculation for method 2a

9.5 Description of apparatus for method 2b

9.6 Calibration of apparatus for method 2b

9.7 Test procedure for method 2b

9.8 Test sequence for method 2b

9.9 Calculations and expression of results for method 2b

10 Correction for specimen surface cells opened during specimen preparation

10.1 For the pressure-variation method (see Clause 8)

10.2 For the volume-expansion method (see Clause 9)

11 Expression of results

11.1 Apparent volume percentage of open cells

11.2 Corrected volume percentage of open cells

12 Precision

13 Test report

Annex A (normative) Notes on procedure