BS EN 196-6:2018 PDF Download

BS EN 196-6:2018 standard describes three methods for determining the fineness of cement. The first method is the sieving method, which is primarily used to check and control the production process by demonstrating the presence of coarse cement particles. The second method is the air-jet sieving method, which measures the retention on sieving and is suitable for particles that pass a 2.0 mm test sieve. This method can also determine the particle size distribution of agglomerates of very fine particles. The third method is the air permeability method, known as the Blaine method, which measures the specific surface area of the cement by comparison with a reference material sample. This method is primarily used to check the consistency of the grinding process in the same plant. However, it may not give significant results for cements containing ultrafine materials. These methods are applicable to all types of cement defined in EN 197-1.