بخش 2.page-8.5

2-4 EN 12350-1, Testing fresh concrete – Part 1: Sampling and moulds
2-5 EN 12390-4, Testing hardened concrete – Part 4: Compressive strength – Specification for testing machines
2-6 EN 12504-1, Testing concrete in structures – Part 1: Cored specimens – Taking, examining and testing in compression
2-7 ISO 3310-1, Test sieves; technical requirements and testing – Part 1: Test sieves of metal wire cloth