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BS EN 933-7:1998
Tests for geometrical properties of aggregates. Determination of shell content. Percentage of shells in coarse aggregates (British Standard)
This European Standard specifies a method for the determination of shell content of coarse aggregates. It applies to gravel or mixed aggregate containing gravel. The test method specified in this part of this European Standard is applicable to particle size fractions di/Di where Di<=63 mm and di>=4 mm. NOTE: 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.
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British Standards Institution [bsi]
British Standards Institution [bsi]