ИСТИНА

State University Currently, in the technical and regulatory documentation, the acidity module is used to describe and select raw materials for the production of basalt fibers. To calculate this parameter, a formula is usually used that includes the mass content of oxides [Perevozchikova, 2014]. In scientific articles, researchers also usually present composition data in mass percent. However, from a chemical point of view, the molar content of glass components is more significant. For example, based on molar concentration, the quantitative structural characteristic of glasses (NB /T) is calculated. NBO/T is the ratio of non-bridging oxygen atoms to tetrahedrally coordinated cations. Based on the data obtained, it was concluded that the use of the structural parameter NBO / T more accurately allows predicting the strength of basalt fibers based on their chemical composition.