Tests for mechanical and physical properties of aggregates - Determination of the resistance to wear (micro-Deval) Ingestion-build-61878 Preliminary experiments might be necessary

Preliminary experiments might be necessary to determine whether these conditions are met

The names of the tests have been revised to the “extreme” and “normal” pressure surge tests

With some necessary modifications and adjustments

The previous Annex B become Annex A

BS EN 378-4 helps you to minimize risks of injury to persons and damage to property and the environment resulting from improper handling of the refrigerants or from contaminants leading to system breakdown and resultant emission of the refrigerant

Tests for mechanical and physical properties of aggregates - Determination of the resistance to wear (micro-Deval) Ingestion-build-61878 Preliminary experiments might be necessary1 Scope This European Standard describes the reference method used for type testing and in case of dispute for determining the resistance to wear of coarse aggregates (main text) and aggregates for railway ballast (Annex A). For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established. The sample is normally tested in a wet