EN 771-3:2011+A1:2015

European foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Materials
5 Requirements for aggregate concrete masonry units
6 Description, designation and classification of aggregate
  concrete masonry units
7 Marking
8 Assessment and verification of constancy of performance
  (AVCP)
Annex A (normative) - Sampling for determination of
        product type and for independent testing of
        consignments
Annex B (normative) - Compliance criteria for product
        type determination and for independent testing
        of consignments
Annex C (informative) - Examples of different shapes
        of aggregate concrete masonry units
Annex D (informative) - Guidance for test frequencies
        for designing a FPC system to demonstrate
        conformity of finished products with the
        requirements of the standard and the
        declaration of the manufacturer
Annex ZA (informative) - Clauses of this European
         Standard addressing the provisions of the
         EU Construction Products Directive
Bibliography

This European Standard specifies the characteristics and performance requirements of aggregate concrete masonry units made from dense and lightweight aggregates or a combination of both for which the main intended uses are common, facing or exposed masonry in load bearing or non-load bearing building and civil engineering applications. The units are suitable for all forms of walling, including single leaf, external leaf to chimneys, cavity wall, partitions, retaining, and basement. They can provide fire protection, thermal insulation, sound insulation and sound absorption.This European Standard includes aggregate concrete masonry units of an overall non-rectangular parallelepiped shape, !specially" shaped and accessory units.It defines the performance related to e.g. strength, density, dimensional accuracy, and provides for the assessment and verification of constancy of performance (AVCP) of the product to this European Standard. The marking requirement for products covered by this European Standard is included.This European Standard does not specify standard sizes for aggregate concrete masonry units, nor standard work dimensions and angles of specially shaped aggregate concrete masonry units. It does not cover storey height panels, chimney flue linings nor units intended for use as a damp proof course. It does not cover units with an incorporated thermal insulation material bonded to the faces of the unit susceptible to be exposed to fire.