This International Standard specifies the pretreatments for measuring the structural stability of soil aggregates. It can be applied to a wide range of materials, essentially coming from the cultivated horizon of cultivated soil. It can also be applied to any soil horizon, regardless of whether it is cultivated or not. The measurement detects aggregates from 3 mm to 5 mm. The presence of gravel in the 2 mm to 5 mm fraction can distort the results. If the proportion of gravel is between 10% and 40%, the gravel fraction > 2 mm should be washed and a mean weighted diameter (MWD, see 6.1), each with and without gravel content, should be calculated. If the proportion of gravel is more than 40%, the structural stability tests are not significant. The process cannot be used for unstructured materials because they are not sufficiently cohesive to form millimeter-sized aggregates.
EN ISO 10930:2013 Referenced Document
ISO 3310-1:2000 Test sieves - Technical requirements and testing - Part 1: Test sieves of metal wire cloth
EN ISO 10930:2013 history
2013EN ISO 10930:2013 Soil quality - Measurement of the stability of soil aggregates subjected to the action of water