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See Chinese contents: GB/T 14685-2022 GB/T 14685-2022: Pebble and crushed stone for construction
This document stipulates the classification and categories, general requirements, technical requirements, test methods, inspection rules, marking, storage, transportation of pebbles and crushed stone used for construction. This document applies to pebbles and crushed stone, which are used in cement concrete and its products in construction projects (except hydraulic buildings).
