Structural interpretation of concentration dependences of glass molar volume in systems R2O — R′2O — SiO2, RO — R′O — SiO2, and R2O — RO — SiO2

The method for structural interpretation of concentration dependences of properties of binary silicate systems based on establishing a correlation between the values of a considered parameter and the degree of depolymerization of the glass structural lattice is completely applicable in the case of ternary silicate glasses containing modifying oxides of the first and second groups of the periodic system in various combinations (the usual estimation error for glass molar volume is ∼ 1%). It is shown that the effect of the interaction between various modifying oxides on variations in glass properties is insignificant or absent.