Research on workability of interlocking-structure dense cement concrete

The coarse aggregate grading resulting from Bolomey calculation is mainly the continuous dense grading . According to the vibration filling test results of Professor Ma Biao, we selected the coarse aggregate with the interlocking skeleton structure,and arranged the testing with uniform design.The test results indicate that the uniform design experimental tests can significantly reduce the amount of testing; the concrete mixture slump increases linearly with the water-cement ratio, decreases linearly with the sand rate and aggregate-cement ratio, and the size of impact factor is water-cement ratio sand ratio aggregate-cement ratio.