本欧洲标准规定了天然粗骨料样品中具有破碎和破碎表面的颗粒百分比的测定方法。它适用于砾石或含有砾石的混合骨料。本欧洲标准本部分规定的试验方法适用于Di = 63mm，di> = 4mm的粒度分数di/Di

This European Standard specifies a method for the determination of the percentage of particles with crushed and broken surfaces in a sample of natural coarse aggregate. 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.