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C15商品普通混凝土10石
C15普通混凝土配合比设计记录03
C15普通混凝土配合比设计记录03
C15普通混凝土配合比设计说明(英)
Mix Design of C15/20 1 Environment and Equipment for Test 1.1 The laboratory, the temperature in the standard curing room and the humidity shall meet the requirements of the testing regulations. 1.2 The specifications, range, accuracy of the test equipment shall adhere to the requirements of the testing regulations with passing the check to be qualified by the Institute of Measurement and Te