Ключевые слова:
Ballast (aggregates), Test equipment, Specimen preparation, Impact strength, Mechanical testing, Test specimens, Physical properties of materials, Testing conditions, Mechanical properties of materials, Cement and concrete technology, Fragmentation tests, Impact testing, Hardness testing, Aggregates, Classification systems, Synthetic aggregates, Reproducibility, Hardness, Coarse aggregates, Strength of materials, Drop tests, Natural aggregates