This European Standard specifies the method for compaction of cylindrical specimens of bituminous mixtures
using a gyratory compactor. Such compaction is achieved by combining a rotary shearing action and a vertical
resultant force applied by a mechanical head.
The method is used for:
a) determination of the air voids content of a mixture for a given number of gyrations or derivation of a curve
density (or void content) versus number of gyrations;
b) preparation of specimens of given height and/or at a predetermined density, for subsequent testing of
their mechanical properties.
The equipment used for the method needs to comply with Annex A, Annex B or Annex C.
NOTE Annex A is especially suitable for void content evaluation and compaction research and Annex B and Annex C
for the preparation of specimens for mechanical testing.
This European Standard applies to bituminous mixtures (both those made up in laboratory and those resulting
from work site sampling), with an upper aggregate size not larger than 31,5 mm.
BS EN 12697-31:2007 Referenced Document
EN 12697-5 Bituminous mixtures - Test methods for hot mix asphalt - Part 5: Determination of the maximum density*， 2024-04-18 Update
EN 12697-6 Bituminous mixtures - Test methods for hot mix asphalt - Part 6: Determination of bulk density of bituminous specimens*， 2012-04-01 Update
EN 12697-8 Bituminous mixtures - Test methods - Part 8: Determination of void characteristics of bituminous specimens*， 2018-12-01 Update
EN 13108-1 Bituminous mixtures - Material specifications - Part 1: Asphalt Concrete*， 2016-06-01 Update
EN ISO 4287 Geometrical Product Specifications (GPS) - Surface texture: Profile method - Terms@ definitions and surface texture parameters - Amendment 2*， 2013-04-01 Update
EN ISO 6508-1 Metallic materials - Rockwell hardness test - Part 1: Test method (ISO 6508-1:2023)*， 2023-12-20 Update
BS EN 12697-31:2007 history
2019BS EN 12697-31:2019 Bituminous mixtures. Test methods. Specimen preparation by gyratory compactor
2007BS EN 12697-31:2007 Bituminous mixtures - Test methods for hot mix asphalt - Specimen preparation by gyratory compactor
2004BS EN 12697-31:2004 Bituminous mixtures - Test methods for hot mix asphalt - Specimen preparation gyratory compactor