BS EN 451-2:2017 PDF Download

The standard BS EN 451-2:2017 titled "Method of testing fly ash: Determination of fineness by wet sieving" specifies the procedure for determining the fineness of fly ash through wet sieving. The method involves sieving the fly ash sample using a 0.045 mm sieve, according to the ISO 565 standard.

This European Standard establishes the reference procedure for determining fly ash fineness. If alternative methods are used, they must demonstrate equivalent results to those obtained from the reference method. However, in case of any disputes or conflicts, only the reference method specified in the standard should be employed.

By providing a standardized method for determining fly ash fineness, this standard ensures that consistent and reliable measurements are obtained. The use of wet sieving in this procedure allows for an accurate assessment of the particle size distribution of fly ash, which is an important factor to consider in its application in various industries, such as concrete production.