BS EN 1097-2. Tests for mechanical and physical properties of aggregates. Part 2. Methods for the determination of resistance tofragmentation|Aggregates, Cement and concrete technology, Mechanical properties of materials, Physical properties of materials, Natural aggregates, Synthetic aggregates, Coarse aggregates, Fragmentation tests, Impact testing, Mechanical testing, Strength of materials, Impact strength, Drop tests, Hardness, Hardness testing, Test equipment, Test specimens, Specimen preparation, Testing conditions, Reproducibility, Classification systems, Ballast (aggregates)