NEN EN 771-3 : 2011 + A1 2015

Foreword
1 Scope
2 Normative references
3 Definitions, terms and symbols
  3.1 Terms and definitions
  3.2 Symbols
4 Materials
  4.1 General
5 Requirements for aggregate concrete masonry units
  5.1 General
  5.2 Dimensions and tolerances
  5.3 Configuration
  5.4 Density
  5.5 Mechanical strength
  5.6 Thermal properties
  5.7 Durability
  5.8 Water absorption by capillarity
  5.9 Moisture movement
  5.10 Water vapour permeability
  5.11 Reaction to fire
  5.12 Shear bond strength
  5.13 Flexural bond strength
6 Description, designation and classification of concrete
  masonry units
  6.1 Description and designation of units
  6.2 Classification
7 Marking
8 Evaluation of conformity
  8.1 General
  8.2 Initial type tests
  8.3 Factory production control
Annex A (normative) Sampling for initial type testing and for
        independent testing of consignments
Annex B (normative) Compliance criteria for initial type testing and
        for independent testing of consignments
Annex C (informative) Examples of different shapes of concrete
        masonry units
Annex ZA (informative) Clauses of this European Standard addressing
         the provisions of the EU Construction Products Directive

Defines 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.