Tests for mechanical and physical properties of aggregates - Determination of the resistance to wear (micro-Deval) Ingestion-build-61878 BS EN 378-4 helps you

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

as defined in Annex A of IEC 61753-1

Unless one of the alternative heating regimes is specifically required

a list of additional parameters has been defined to support the definition of the measurement specifications and their associated test procedures

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

Tests for mechanical and physical properties of aggregates - Determination of the resistance to wear (micro-Deval) Ingestion-build-61878 BS EN 378-4 helps you1 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