Standards Development
This European Standard specifies procedures for the chemical analysis of aggregates. It specifies the reference procedures and, in certain cases, an alternative method which can be considered as giving equivalent results.
Unless otherwise stated, the test methods specified in this standard may be used for factory production control, for audit tests or for type tests.
This standard describes the reference methods used for type testing and in cases of dispute (and alternatives methods) for chemical analyses of aggregates. For the purpose of type testing and in cases of dispute only the reference method should be used. 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 initiation of the revision of EN 1744-1 is in line with Decision 24/2020 of CEN/TC154 Plenary meeting, October 2020:
Revision of Published Standards Noting the results of their recent Systematic Reviews, CEN/TC 154 agrees to revise the following standards:
• EN 933-10: Tests for geometrical properties of aggregates - Part 10: Assessment of fines - Grading of filler aggregates (air jet sieving) (N1603)
• EN 1744-1: Tests for chemical properties of aggregates - Part 1: Chemical analysis (Ref N1605)
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