A mixture of foam concrete with cement can't arbitrary

A mixture of foam concrete with cement can't arbitrary
A wide variety of cement strength is different also, all kinds of performance is also different, different varieties of cement with different cement, cement performance change, strength grade is reduced, the waste caused by cement, and quality accidents tend to occur, so, different varieties of different strength grade of cement should be storage and transportation, respectively, shall not be mixed, cannot optional with more use.