BS EN 13055-2:2004

Foreword
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Requirements
  4.1 General
  4.2 Density
  4.3 Aggregate size
  4.4 Grading
  4.5 Particle shape
  4.6 Fines
  4.7 Grading of LWA filler
  4.8 Water content
  4.9 Water absorption
  4.10 Bulk crushing resistance
  4.11 Percentage of crushed particles
  4.12 Resistance to disintegration
  4.13 Freezing and thawing resistance
  4.14 Water suction height
  4.15 Compaction and load bearing capacity
  4.16 Resistance to cyclic compressive loading
  4.17 Stiffening properties
  4.18 Voids of dry compacted LWA filler
  4.19 Resistance to thermal shock
  4.20 Resistance to polishing
  4.21 Resistance to wear by abrasion from studded tyres of
       coarse LWA in surface treatments
  4.22 Compatibility between LWA and bitumen
  4.23 Chemical requirements
  4.24 Thermal conductivity
5 Testing
  5.1 Sampling
  5.2 Quantity of test specimens
  5.3 Preparation of test specimens
6 Evaluation of conformity
  6.1 General
  6.2 Initial type tests
  6.3 Factory production control
7 Designation, supply marking and labelling
  7.1 Designation
  7.2 Supply
  7.3 Marking and labelling
Annex A (normative) Compaction and load bearing capacity
      A.1 General
      A.2 Principle
      A.3 Sampling
      A.4 Apparatus
      A.5 Preparation of test specimens
      A.6 Procedure
      A.7 Calculation and expression of results
      A.8 Test report
Annex B (normative) Determination of resistance to freezing and
        thawing of lightweight aggregates
      B.1 Introduction
      B.2 Principle
      B.3 Apparatus
      B.4 Sampling
      B.5 Test specimens
      B.6 Procedure
      B.7 Calculation and expression of results
      B.8 Test report
Annex C (normative) Factory production control
      C.1 Introduction
      C.2 Organization
      C.3 Control procedures
      C.4 Management of the production
      C.5 Inspection and test
      C.6 Records
      C.7 Control of non-conforming product
      C.8 Handling, storage and conditioning in production areas
      C.9 Transport and packaging
      C.10 Training of personnel
Annex D (informative) Guidance on how to convert quantities by mass
        to quantities by volume
      D.1 Background
      D.2 Example calculation
Annex ZA (informative) Clauses of this European Standard addressing
         the provisions of the EU Construction Products Directive

Describes the properties of lightweight aggregates and fillers derived thereof obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for bituminous mixtures and surface treatments and for unbound and hydraulically bound applications other than concrete, mortar and grout.

This European Standard specifies the properties of lightweight aggregates and fillers derived thereof obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for bituminous mixtures and surface treatments and for unbound and hydraulically bound applications other than concrete, mortar and grout. This European Standard covers lightweight aggregates of mineral origin having particle densities not exceeding 2000 kg/m3 (2,00 Mg/m3) or loose bulk densities not exceeding 1200 kg/m3 (1,20 Mg/m3) including: a) natural aggregates; b) aggregates manufactured from natural materials and/or from by-products of industrial processes; c) by-products of industrial processes; d) recycled aggregates. It provides for the evaluation of conformity of the products to this European Standard. The requirements specified in this standard may not be relevant to all types of lightweight aggregates. For particular applications the requirements and tolerances can be adapted for the end use. NOTE Aggregates used in construction should comply with all the requirements of this European Standard. As well as familiar and traditional natural and manufactured aggregates Mandate M/125 \'Aggregates\' included recycled aggregates and some materials from new or unfamiliar sources. Recycled aggregates are included in the standards and new test methods for them are at an advanced stage of preparation. For unfamiliar materials from secondary sources, however, the work on standardization has only started recently and more time is needed to define clearly the origins and characteristics of these materials. In the meantime such unfamiliar materials when placed on the market as aggregates should comply fully with this standard and national regulations for dangerous substances (see annex ZA) depending upon their intended use. Additional characteristics and requirements can be specified on a case by case basis depending upon experience of use of the product, and defi