ДСТУ EN 196-10:2022 Методы испытания цемента. Часть 10. Определение содержания водорастворимого хрома (VI) в цементе (EN 196-10:2016, IDT)

ДСТУ EN 196-10:2022
(EN 196-10:2016, IDT)

Методи випробування цементу. Частина 10.
Визначення вмісту водорозчинного хрому (VI) у цементі

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

Contents

European foreword

Introduction

1 Scope

2 Normative references

3 General requirements for testing

3.1 Number of tests

3.2 Repeatability and reproducibility

3.3 Expression of masses, volumes, factors and results

3.4 Blank determinations

4 Reagents

5 Apparatus

6 Preparation of a test sample of cement

7 Extraction procedure

7.1 Principle

7.2 Preparation of mortar

7.3 Filtration

8 Determination of chromium (VI)

8.1 General

8.2 Measurement of absorbance without oxidation

8.3 Measurement of absorbance with oxidation

9 Calculation and expression of results

9.1 Calculation

9.2 Expression of results

10 Reporting of results

11 Repeatability and reproducibility

Annex A (normative) Evaluation of the compliance of cement with the regulatory limit in 47 to Annex XVII of Regulation (EC) No. 1907/2006 on water-soluble hexavalent chromium content

Annex В (informative) Guidance on the application of this European Standard to the determination of the water soluble chromium (VI) content of cement-containing preparations

Annex C (informative) Guidance on screening test method (1) using paste extraction - method based on DS 1020

Annex D (informative) Guidance on screening test method (2) using paste extraction - method based on TRGS 613

Annex E (informative) Guidance on the photometric determination of chromium reduction capacity in cements

Bibliography