BS EN 933-7:1998 Tests for geometrical properties of aggregates - Determination of shell content. Percentage of shells in coarse aggregates
Current
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BS EN 933-7 is a European Standard that specifies a method for the determination of shell content of coarse aggregates. BS EN 933-7 applies to gravel or mixed aggregate containing gravel.
The test method specified in BS EN 933-7 is applicable to particle size fractions di/Di where Di # 63 mm and di $ 4 mm.
For aggregate sizes with D > 63 mm and/or d < 4 mm the test may be carried out on particle size fractions di/Di where Di # 63 mm and di $ 4 mm.