“…The 300~ temperature was selected because of the fact that the reaction of the phosphate binders with the oxides SiO 2 and A1203 which are predominant in the ShT-2 mortar occurs in the 150-300~ range [5,6], while the temperatures 800, 1100, and 1300~ are those most frequently encountered in the service of the refractory linings of thermal equipment (the cars of tunnel kilns, claydite kilns, the chambers of circular kilns, etc. ).…”