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  • NBN EN 12697-31 : 2007

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    BITUMINOUS MIXTURES - TEST METHODS FOR HOT MIX ASPHALT - PART 31: SPECIMEN PREPARATION BY GYRATORY COMPACTOR

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    Published date:  12-01-2013

    Publisher:  Belgian Standards

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions, symbols and abbreviations
      3.1 Terms and definitions
      3.2 Symbols
    4 Principle
    5 Apparatus
      5.1 Test device
      5.2 Metallic moulds
      5.3 Round metallic inserts
      5.4 Device for measuring the distance between inserts
      5.5 Device for counting the number of rotations to within
          one revolution
    6 Preparation of specimens
      6.1 Mass of mixture to be introduced in the mould
          6.1.1 Preparation of specimens of a given height at a
                predetermined bulk density
          6.1.2 Derivation of a curve density versus number of
                gyrations
      6.2 Preparation of test pieces
    7 Test procedure
      7.1 Preliminary setting
          7.1.1 Pre-load
          7.1.2 Force F
          7.1.3 Setting of the angle of inclination
          7.1.4 Speed of rotation
          7.1.5 Test temperature
      7.2 Compaction of specimens
          7.2.1 Start of compaction
          7.2.2 Preparation of specimens of a given height at
                a predetermined density
          7.2.3 Derivation of a curve density or void content
                versus number of gyrations
    8 Test report
    9 Precision
    Annex A (normative) Procedure for setting the gyratory-type
                        angle and the type conformity (force F
                        is fixed)
      A.1 Gyratory-type testing procedure
          A.1.1 Central reference materials for gyratory-type
                testing
          A.1.2 Gyratory-type angle test
      A.2 Procedure to test the conformity of a gyratory compactor
          to a type
      A.3 Summary of the gyratory calibration chain

    Abstract - (Show below) - (Hide below)

    Defines the method for compaction of cylindrical specimens of bituminous mixtures using a gyratory compactor.

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    Document Type Standard
    Publisher Belgian Standards
    Status Current
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