标准号:IS 383-1970
发布日期:1971/4/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard covers the requirements for aggregates, crushed or uncrushed, derived from natural sources, such as river terraces and river-beds, glacial deposits, rocks, boulders and gravels, for use in the production of concrete for normal structural purposes including mass concrete works.