An attempt was made to interpret the structural changes of glass in the temperature interval of glass transition based on the study of values of the coefficient of linear thermal expansion (CTEL) of Na2O-SiO2 and Na2O-CaO-SiO2 systems. In most cases, CTEL in this interval takes a leap of its value. However, for different glass compositions, the size of this leap is different, and in some cases it is not observed at all.
Influence of different functional purpose additives complex on mechanical properties of light-weight plugging mortar was investigated. Prescriptions of expanding light-weight plugging mortars with usage of low reactive lime were made.
This paper is devoted to the results of deformation characteristics of concrete and reinforced foam concrete with fiber polypropylene fiber. Tests were carried out by the standard method and a method based on the values of equality elastic modulus of concrete in compression and tension using a chart based "stress-strain".