Concrete works only when needed by the number of mixing

(1) Concrete works only when needed by the number of mixing. Initial setting of the concrete has not used does not allow water or other means to change the consistency of concrete. Pouring slump should be consistent with relevant regulations.
(2) Asphalt Mixing Plant should be maintained in good condition, and any non-compliant and non-compliant equipment in good condition, or defective concrete mixing equipment shall not be used for mixing shall vacate the site. (3) concrete mixing work, various combinations of materials should be stirred into distribution, a mixture of the same color. Concrete mixing plant material per plate should not exceed the volume of the mixer indicated 10% of the rated capacity. In the cement and aggregates into the mixer, before part of mixing water added and stirring all the water cement mixing machine first 15s uniform injection. (4) footwall material mounted as before, the mixer's mixing materials should be fully inverted light. More than 30min stirring device disabled, should be thoroughly cleaned before mixing mixer new concrete. Such as changing the type of cement, mixing equipment should be thoroughly cleaned.