PREN 13450 : DRAFT 2015

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Geometrical requirements
6 Physical requirements
7 Chemical requirements
8 Durability
9 Assessment and verification of constancy of
   performance
10 Designation
11 Marking and labelling
Annex A (normative) - Source materials considered
         in the development of EN 13450 and their
         status in respect of the scope of this standard
Annex B (informative) - Sampling railway ballast at
         the construction site either from a railway
         wagon or from the track
Annex C (informative) - Guidance on interpretation of
         results when samples of railway ballast have been
         taken from railway wagon or from track
Annex D (normative) - Conditions to be applied to the
         test procedure specified in EN 1367-2 for the
         determination of the resistance of railway
         ballast to the magnesium sulfate test
Annex E (normative) - Conditions to be applied to
         the test procedure specified in EN 1367-1 for
         determination of the resistance to freezing
         and thawing of railway ballast
Annex F (informative) - Procedure for the incorporation
         of new source materials
Annex ZA (informative) - Clauses of this European
         Standard addressing the provisions of the EU
         Construction Products Regulation

Describes the properties of aggregates obtained by processing natural, manufactured or recycled crushed unbound aggregates for use in construction of the upper layer of railway track.