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CEN/TC 154 N 1550, Aggregates for construction works: Part 1 - Product standard Part 2 - Supporting information

Scope

The Part 1 (harmonised) European Standard will specify the characteristics of aggregates for use in

• concrete for buildings, roads and other civil engineering works,

• mortar

• bituminous mixtures and surface treatments for roads, airfields and other trafficked areas,

• unbound and hydraulically bound materials for use in civil engineering work and road construction Aggregates to be covered in this European Standard, are obtained by processing natural, manufactured or recycled materials and mixtures of these materials. Families of aggregates covered will include coarse aggregates, grit, fine aggregates, natural graded aggregates, all-in aggregates and added fillers.

The standard will cover natural and manufactured aggregates having an oven dried particle density greater than 2,00 Mg/m3 and recycled aggregates with particle densities greater than 1,50 Mg/m3. Natural and manufactured aggregates of density less than or equal to 2,00 Mg/m3 are already covered by our existing standard EN 13055.

The standard will not cover

• the use of reclaimed bituminous mixtures. Reclaimed asphalt for use as a constituent of bituminous mixtures is specified in EN 13108 8.

• use of aggregates as soil

• the creation of unbound mixtures for road construction from aggregates as this aspect is specified in EN13285

The non-harmonised Part 2 standard will provide non-contradictory complementary information to assist in the practical application of the Part 1 standard, including advice on the reasons for testing and declaring various characteristics and recommendations for the practical implementation of factory production control measures.

Purpose

There is a need for a technical update and need for major reconfiguration of the following main technical standards to meet the CPR requirements for harmonised standards, whilst still complying with the Essential Requirements set out in Mandate M125

EN 12620, Aggregates for concrete;

EN 13043, Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas

EN 13139, Aggregates for Mortar

EN 13242, Aggregates for unbound and hydraulically bound materials for use in civil engineering work and road construction;

Because in many respects the same material is being produced for the different end-uses forming the scope of the existing standards, CEN TC154 agreed at their plenary meeting in Portugal in October 2019 to combine and replace these standards by a single standard. It is anticipated that the new standard will be in two parts: the Part 1 standard will be a Harmonised Standard which is cited in the OJEU; the Part 2 standard will provide additional non-contradictory complementary information for users of the Part 1 standard

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