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PD CEN/TR 17365:2019 Method for the determination of C3A in the clinker from cement analysis, 2019
- National foreword
- European foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle of the method
- 5 Expression of masses, volumes, factors and results
- 6 Ignitions
- 7 Determination of constant mass
- 8 Preparation of a test sample of cement
- 9 Reagents [Go to Page]
- 9.2 EDTA - dihydrated disodium salt of ethylenediaminetetra-acetic acid.
- 9.3 0,025M EDTA solution
- 9.11 Hydrochloric acid, dilute (1 + 1)
- 9.12 Hydrochloric acid, dilute (1 + 100)
- 9.14 Sulfo-5-salicylic acid dehydrate
- 9.15 Sulphosalicylic acid indicator:
- 9.17 Acetic buffer solution at pH 4,7-4,8
- 9.20 buffer solution, ammoniacal
- 9.22 Potassium hydroxide solution 4N,
- 9.23 Methylthymol blue complexone indicator
- 9.24 Methyl orange indicator
- 9.26 Methylthymol blue mix complexone indicator
- 9.28 Copper complexonate solution
- 9.30 Murexide indicator
- 9.33 Reagent for determination of carbon dioxide
- 10 Apparatus [Go to Page]
- 10.3 Electric furnace or Bunsen burner for temperatures up to 950 °C
- 10.4 Electromagnetic stirrer
- 10.6 Vacuum filtration device
- 10.10 Platinum crucibles, 10 to 20 cm3 capacity, with lids
- 10.11 Hot plate (or sand bath) capable of being set to temperatures up to 350°C.
- 10.12 Sand bath set to a temperature of 105 ± 5°C (or bain-marie).
- 11 Determination of BCR residue on cement [Go to Page]
- 11.1 Procedure
- 12 Decomposition of the test sample for CEM I and IV type cements [Go to Page]
- 12.1 General
- 12.2 Precipitation of silica: treatment with perchloric acid in covered beaker
- 13 Decomposition of the BCR residue and precipitation of silica in the residue
- 14 Chemical analysis of the filtrate obtained from treatment of the test sample and of the filtrate obtained from treatment of the BCR residue [Go to Page]
- 14.1 General
- 14.2 Determination of ironoxide (Fe2O3)
- 14.3 Determination of aluminium oxide (Al2O3)
- 15 Determination of Sulfur trioxide (SO3)
- 16 Volumetric determination of carbon dioxide (CO2) in the cement test sample
- 17 Chemical analysis by X-ray fluorescence
- 18 Calculation and expression of results [Go to Page]
- 18.1 General
- 18.2 Calculation of the gypsum content
- 18.3 Calculation of the CaCO3 content
- 18.4 Calculation of the pozzolana content
- 18.5 Calculation of the correction factor for cement types I
- 18.6 Calculation of the correction factor for cement types IV/A and IV/B
- 18.7 Calculation of the C3A, C4AF of clinker according to Bogue for cement types I:
- 18.8 Calculation of the C3A, C4AF of clinker according to Bogue for cement types IV/A and IV/B:
- 19 Repeatability and reproducibility
- Bibliography [Go to Page]
