RO
SR EN 1097-2:2020
Tests for mechanical and physical properties of aggregates - Part 2: Methods for the determination of resistance to fragmentation
This document describes the reference method, the Los Angeles test, used for type testing and in case of dispute (and an alternative method, the impact test) for determining the resistance to fragmentation of coarse aggregates (main text) and aggregates for railway ballast (Annex A). For other purposes, in particular factory production control, other methods are possible provided that an appropriate working relationship with the reference method has been established. This document applies to natural, manufactured or recycled aggregates used in building and civil engineering. Annex A describes a method for the determination of resistance to fragmentation of aggregates for railway ballast. Annex B gives alternative narrow range classifications for the Los Angeles test and the impact test. Annex C contains construction, operation and safety requirements for the impact tester. Annex D describes a method for checking of the impact tester. Annex E gives precision data. Annex F contains a worked example of calculation of impact value SZ. Annex G gives an alternative narrow range clas
Status :
Valid
Approval date : 5/29/2020
Number of pages : 44
ICS : 91.100.15 Mineral materials and products
Technical Committee : 321 - Concrete and related products
- Replaces SR EN 1097-2:2010
- Normative reference SR EN 932-2:2003
- Normative reference SR EN 932-5:2012
- Normative reference SR EN 933-1:2012
- Normative reference SR EN 933-2:2020
- Normative reference SR EN 1097-6:2013
- Normative reference SR EN 1097-6:2013/C91:2019
- Normative reference SR EN 10025-2:2004
- Normative reference SR EN 10025-2:2004/AC:2005