concrete plant concrete quality inspection 

 (1) the concrete casting must be made before the slump of sampling inspection, and shall be in mixing and pouring location, respectively. 2.4.2 concrete strength test sample, the sampling frequency in accordance with the concrete strength inspection approval documents, and group management measures.

(2) used in concrete production control of concrete test specimen shall be in place to collect, stir to delivery inspection of concrete test specimen should be in casting site acquisition, after the completion of the standard curing, implement the inspection on schedule.

(3) concrete sample should be randomly drawn from carrier, should be between a quarter to three quarters of the discharge capacity is taken, the sample size should be 1.5 times for concrete testing required for the project, and should not be less than 0.02 m3.

(4) concrete inspection acceptance of the project, should according to the national standards for ordinary concrete mechanics performance test method of GB/T50081-2002, ordinary concrete mixture performance test method of GB/T50080-2002, the concrete strength inspection evaluation standard GBJ107-87.