What is BS EN 196-6- Determination of fineness of cement about?
BS EN 196-6 is the sixth part of the multi-series European standards which discusses the methods of testing cement. BS EN 196-6 describes three methods of determining the fineness of the cement.
The sieving method serves only to demonstrate the presence of coarse cement particles. This method is primarily suited to checking and controlling the production process.
The sir-jet sieving method measures the retention on sieving and is suitable for particles that substantially pass a 2,0 mm test sieve. It can be used to determine the particle size distribution of agglomerates of very fine particles. This method can be used with test sieves in a range of aperture sizes, e.g., 63 μm and 90 μm.
The air permeability method (Blaine) measures the specific surface area (surface area related to mass) by comparison with a reference material sample. The determination of the specific surface area serves primarily to check the consistency of the grinding process of the same plant. This method only enables a limited assessment to be made of the properties of the cement in use.
Note-
The air permeability method may not give significant results for cement containing ultrafine materials.
Who is BS EN 196-6- Determination of fineness of cement for?
BS EN 196-6 on the determination of fineness the methods of testing cement is applicable for:
- Cement companies
- Retailers and suppliers of cement
- Civil engineers/ contractors
Why should you use BS EN 196-6- Determination of fineness of cement?
The fineness of cement is measured by sieving it on standard sieves. The mass proportion of cement of which the grain sizes are larger than the specified mesh size is thus determined.
BS EN 196-6 includes the guidance for test conditions for the laboratory. This will help you carry out the test effectively.
BS EN 196-6 provides you guidance on the storage of cement for testing.
BS EN 196-6 helps you with the specification of the containers which shall be marked with the sieve residue of the reference material. This helps you in determining the fineness of the cement.
What’s changed since the last update?
BS EN 196-6:2018 supersedes BS EN 196-6:2010, which is withdrawn. It includes:
- Elimination of the determination of bed volume by mercury volume
- In subclause 4.10, new data for the standard deviation of the repeatability and reproducibility have been introduced
