ISO 22146:2018
Carbonate liming materials — Determination of reactivity — Automatic titration method with citric acid
This document specifies a method for determining the reactivity of calcium carbonate and calcium magnesium carbonate liming materials. It assesses the speed and effectiveness of their neutralising potential by automatic titration with citric acid.
This method is applicable only to liming materials with a maximum particle size of 6,3 mm determined in accordance with ISO 20977.
NOTE For marble dolomite (BET procedure as defined in ISO 9277 below 500 m2/kg), see EN 14984.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Sampling and sample preparation
7.1 General
7.2 Preparation of the test sample
7.3 Preparation of the test portion
8 Procedure
8.1 General
8.2 Calibrations
8.3 Measurement
8.4 Determination of neutralising value
8.5 Determination of MgO content
9 Calculation and expression of the results
10 Precision
10.1 Inter-laboratory tests
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A (normative) Preparation of the test portion of liming materials coarser than 1 mm
Annex B (normative) Arrangement of the test apparatus
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Sampling and sample preparation
7.1 General
7.2 Preparation of the test sample
7.3 Preparation of the test portion
8 Procedure
8.1 General
8.2 Calibrations
8.3 Measurement
8.4 Determination of neutralising value
8.5 Determination of MgO content
9 Calculation and expression of the results
10 Precision
10.1 Inter-laboratory tests
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A (normative) Preparation of the test portion of liming materials coarser than 1 mm
Annex B (normative) Arrangement of the test apparatus
Bibliography