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BSI BS EN 933-9:2022

Tests for geometrical properties of aggregates -- Assessment of fines. Methylene blue test
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BSI BS EN 933-9:2022

Tests for geometrical properties of aggregates -- Assessment of fines. Methylene blue test

PUBLISH DATE 2022
PAGES 22
BSI BS EN 933-9:2022
This document specifies the reference method used for type testing and in cases of dispute, for the determination of the methylene blue value of the size 0/2 mm fraction in fine aggregates or all-in aggregates (MB). It also specifies the reference method for the determination of the methylene blue value of the size 0/0,125 mm fraction (MBF) in normative Annex A. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the suitable reference method has been established. Annex B specifies the preparation of 10 g/l methylene blue solution and Annex C specifies the procedure for the determination of the methylene blue value of kaolinite (MBk). Annexes B and C are normative. A conformity check, adding a single quantity of dye solution equivalent to a specified limiting value and which can be used as part of a production control process, is described in informative Annex D. An example of a test data sheet is given in informative Annex E. WARNING – The use of this part of EN 933 can involve hazardous materials, operations and equipment (such as dust, noise and heavy lifts). It does not purport to address all of the safety or environmental problems associated with its use. It is the responsibility of users of this document to take appropriate measures to ensure the safety and health of personnel and the environment prior to application of the standard, and fulfil statutory and regulatory requirements for this purpose.
SDO BSI: British Standards Institution
Document Number EN 933-9
Publication Date March 14, 2022
Language en - English
Page Count 22
Revision Level
Supercedes
Committee B/502/6
Publish Date Document Id Type View
March 14, 2022 BS EN 933-9:2022 Revision
April 30, 2010 BS EN 933-9:2009 Revision
April 15, 1999 BS EN 933-9:1999 Revision
April 30, 2013 BS EN 933-9:2009+A1:2013 Consolidated
April 30, 2013 BS EN 933-9:2009:2013 Consolidated