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BS EN 14944-4:2025 Influence of cement based products on water intended for human consumption. Test methods - Migration of substances from site-applied cement based materials and associated non-cement based products/materials >
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BS EN 14944-4:2025 Influence of cement based products on water intended for human consumption. Test methods - Migration of substances from site-applied cement based materials and associated non-cement based products/materials, 2025
- undefined
- European foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Reagents [Go to Page]
- 6 Apparatus [Go to Page]
- 7 Samples and test pieces [Go to Page]
- Table 1 — S/V ratio for use in the test procedure
- 8 Pre-treatment of samples (curing and preconditioning) [Go to Page]
- 9 Test procedure [Go to Page]
- 10 Analysis
- 11 Calculation of test results [Go to Page]
- 12 Test report [Go to Page]
- Table 2 — Example of presentation of test results
- Annex A (normative) Testing and assessing migration of substances from the constituents of concretes
- A.1 General
- A.2 Method
- A.3 Normative references
- A.4 Terms and definitions
- A.5 Principle
- A.6 Reagents
- A.7 Apparatus
- A.8 Reference (or control) concrete
- A.8.1 General
- A.8.2 Reference aggregate
- A.8.3 Reference cement
- Table A.1 — Combined limit for metals in cement and additions
- A.8.4 Mixing water
- A.8.5 Reference control concrete mix proportions
- A.9 Sampling of constituents
- A.10 Control mix, test mixes and test pieces
- A.10.1 General
- A.10.2 Test piece preparation
- A.10.2.1 Test pieces made from control concrete mix
- A.10.2.2 Test pieces made by incorporating an unapproved constituent in the reference concrete
- A.10.2.2.1 General
- A.10.2.2.2 Test mix for cements
- A.10.2.2.3 Test mix for aggregates
- A.10.2.2.4 Test mix for type I additions
- A.10.2.2.5 Test mix for type II additions
- A.10.2.2.6 Test mix for admixtures
- A.10.2.2.7 Test mix for polymer modifiers
- A.10.2.2.8 Test mix for fibres
- A.11 Concrete mixing and compacting procedure
- A.12 Curing and preconditioning of test pieces
- A.12.1 Curing
- A.12.2 Preconditioning
- A.13 Surface area to volume (S/V) ratio
- A.14 Test procedure
- A.14.1 Migration procedure at 23 C
- A.14.2 Migration procedure at elevated temperature
- A.14.3 Control samples (procedural blank test)
- A.14.3.1 Procedural blank to be used with cements
- A.14.3.2 Control sample to be used with aggregates, additions type I, additions type II, admixtures, polymer modifiers and fibres
- A.15 Test arrangement
- A.16 Assessment of unapproved constituents
- A.16.1 Assessment of cements
- A.16.2 Assessment of aggregates
- A.16.3 Assessment of type I additions
- A.16.4 Assessment of type II additions
- A.16.5 Assessment of admixtures
- A.16.6 Assessment of polymer modifiers
- A.16.7 Assessment of fibres
- A.17 Analysis
- A.18 Calculation of test results
- A.18.1 Calculation of the concentration of the substances in the migration water contributed by the unapproved constituent
- A.18.2 Calculation of the migration rate of the measured substances
- A.18.3 Calculation of the mean migration rate
- A.19 Test report
- Annex B (normative) Testing and assessing migration of substances from the constituents of mortars
- B.1 General
- B.2 Method
- B.3 Normative references
- B.4 Terms and definitions
- B.5 Principle
- B.6 Reagents
- B.7 Apparatus
- B.8 Reference (or control) mortar
- B.8.1 General
- B.8.2 Reference aggregate
- B.8.3 Reference cement
- B.8.4 Mixing water
- B.8.5 Reference control mortar mix proportions
- B.9 Sampling of constituents
- B.10 Control mix, test mix and test pieces
- B.10.1 General
- B.10.2 Test piece preparation
- B.10.2.1 Test pieces made from control mortar mix
- B.10.2.2 Test pieces made by incorporating an unapproved constituent in the reference mortar
- B.10.2.2.1 General
- B.10.2.2.2 Test mix for cements
- B.10.2.2.3 Test mix for aggregates
- B.10.2.2.4 Test mix for type I additions
- B.10.2.2.5 Test mix for type II additions
- B.10.2.2.6 Test mix for admixtures
- B.10.2.2.7 Test mix for polymer modifiers
- B.10.2.2.8 Test mix for fibres
- B.11 Mortar mixing and compacting procedure
- B.12 Curing and preconditioning of test pieces
- B.13 Surface area to volume (S/V) ratio
- B.14 Test procedure
- B.14.1 Migration procedure at 23 C
- B.14.2 Migration procedure at elevated temperature
- B.14.3 Control samples (procedural blank test)
- B.14.3.1 Procedural blank to be used with cements
- B.14.3.2 Control sample to be used with aggregates, additions type I, additions type II, admixtures, polymer modifiers and fibres
- B.15 Test arrangement
- B.16 Assessment of unapproved constituents
- B.16.1 Assessment of cements
- B.16.2 Assessment of aggregates
- B.16.3 Assessment of type I additions
- B.16.4 Assessment of type II additions
- B.16.5 Assessment of admixtures
- B.16.6 Assessment of polymer modifiers
- B.16.7 Assessment of fibres
- B.17 Analysis
- B.18 Calculation of test results
- B.18.1 Calculation of the concentration of the substances in the migration water contributed by the unapproved constituent
- B.18.2 Calculation of the migration rate of the measured substances
- B.18.3 Calculation of the mean migration rate
- B.19 Test report
- Annex C (normative) Testing and assessing migration of substances from associated non-cement based products/materials
- C.1 Introduction
- C.2 Method
- C.3 Normative references
- C.4 Terms and definitions
- C.5 Principle
- C.6 Reagents
- C.7 Apparatus
- C.8 Reference (or control) concrete/mortar
- See A.7 for concrete or B.7 for mortar.
- C.9 Sampling of constituents and unapproved products
- C.10 Control mix, test mix and test pieces
- C.10.1 General
- C.10.2 Test pieces
- C.11 Concrete/mortar mixing and compacting procedure
- C.11.1 Mixing
- C.11.2 Mould release agents
- C.12 Curing and preconditioning of test pieces
- C.12.1 General
- C.12.2 Curing compounds
- C.12.3 Porous seal coats
- C.12.4 Preconditioning
- C.13 Surface area to volume (S/V) ratio
- C.14 Test procedure
- C.14.1 Migration procedure at 23 C
- C.14.2 Migration procedure at elevated temperature
- C.15 Test arrangement
- C.16 Assessment of unapproved products
- C.17 Analysis
- C.18 Calculation of test results
- C.18.1 Calculation of the concentration of the substances in the migration water contributed by the unapproved product
- C.18.2 Calculation of the migration rate of the measured substances
- C.18.3 Calculation of the mean migration rate
- C.19 Test report
- Annex D (informative) Examples of typical test pieces and test conditions as a function of S/V ratio
- Annex E (informative) Test arrangements for site-applied cement based materials and associated non-cement based products/materials
- Figure E.1 — Typical test arrangement for stainless steel test plates coated with porous seal coat
- Figure E.2 — Typical test arrangement for testing, fully immersed, cubes prepared from fresh concrete or prisms prepared from fresh mortar
- Annex F (normative) Additional procedures for testing site-applied cement based products at elevated temperature
- F.1 General
- F.2 Test procedure at elevated temperature
- F.2.1 General
- F.2.2 Preparation of migration water for analysis of substances
- F.3 Control samples (blank test)
- F.4 Expression of results
- F.5 Reporting
- Annex G (informative) Discrimination between porous and non-porous coating on site applied cement based products
- G.1 Principle
- G.2 Apparatus
- G.3 Materials and reagents
- G.4 Test procedure
- G.4.1 General
- G.4.2 Laboratory blank
- G.4.3 Coated product
- G.5 Determination of pH
- G.6 Expression of results
- G.7 Classification criteria
- Annex H (informative) Schematic description of the test procedure
- H.1 Preconditioning
- Figure H.1 — Schematic description of the preconditioning
- H.2 Production of migration water at 23 C
- Figure H.2 — Schematic description of the test
- H.3 Typical schedule
- H.3.1 Preconditioning
- H.3.2 Production of migration waters
- Annex I (informative) Procedural tests using standard additions (positive control)
- Bibliography [Go to Page]