Preparation and properties of corundum HCBS and ceramic concretes. Part 2. Composition and properties of compacted ceramic concretes

The effect of the composition of original molding systems and firing temperature on the properties of fine-grained ( D max = 1.5 mm) and medium grain sized ( D max = 4.0 mm) specimens of compacted corundum ceramic concretes with a corundum-mullite matrix system are studied. Optimum properties (open porosity of 14 – 15%, ultimate strength in compression of 150 – 200 MPa) are achieved in compositions with a matrix system content of 30 – 35%. A calculation and experimental method is used to determine matrix system porosity in ceramic concrete specimens in relation to their composition.