(1) is responsible for the second interview of raw materials and the inspection of concrete mixture before, during and after mixing. (2) Test and appraisal of concrete design mixture ratio, responsible for measuring the moisture content of sand and gravel before each shift, and accordingly put forward the construction mixture ratio and fill in the concrete pouring list. (3) Be responsible for making concrete mixture slump, air content, concrete strength and durability test pieces at specified frequency during concrete mixing, and carrying out maintenance and age test according to regulations. (4) Operate testing instruments and equipment according to regulations, and carry out regular cleaning and maintenance to ensure the accuracy of instruments and equipment and the cleanliness of indoor environment. (5) Do a good job of daily concrete test records. (6) Fill in the "Test Report" in time and distribute it to relevant departments, and be responsible for the authenticity of the report. (7) Adjust the construction mixture ratio in time according to the production instruction and production plan, and issue the construction ingredient list to the construction room. (8) Complete relevant tests in the process of concrete production and pouring as required. (9) According to the approach of raw materials, the sampling inspection of raw materials and related tests shall be carried out on time. (10) is responsible for sorting out and summarizing relevant test data of concrete. (1 1) is responsible for the technical and quality monitoring of concrete production in the mixing station.
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