SECTION 900 - CONCRETE WORKS 901 SCOPE OF SECTION 5 902 DEFINITIONS 5 903 MATERIALS FOR CONCRETE 材料 5 A General 5 B Cement水泥 6 C General requirements for aggregates一般规格的骨料 7 D Fine aggregate细集料 9 E Coarse aggregate粗骨料 9 F Testing aggregates骨料试验 11 1) Acceptance testing验收测试 11 2) Compliance testing 顺应性测试 10 G Water for concrete and mortar混凝土和砂浆用水 10 H Admixtures and cementitious extend