This document specifies the method for compaction of cylindrical specimens of bituminous mixtures using a gyratory compactor. The method is used for: ?? 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; ?? preparation of specimens of given height and/or at a predetermined density@ for subsequent testing of their mechanical properties. Annex A and Annex B describe method of complying for the equipment. This document 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.
EN 12697-31-2019由CEN - European Committee for Standardization 发布于 2019-03-01,并于 2019-03-18 实施。
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