MAGNESIAL BINDING MATERIAL Russian patent published in 1998 - IPC

FIELD: building industry, more particularly filling up voids in barren rock. SUBSTANCE: claimed magnesial binding material comprises caustic magnesite and working fluid in amount of 55 and 45 wt %, respectively. Caustic magnesite is fired to 40- 65 wt % intermediate decarbonization product with elementary cell parameter of and light refraction index of n= 1.60-1.70, 25-35 wt % periclase and 5-25 wt % MgCO₃. The claimed magnesial binding material has rapid setting power of 40-100 min and rapid strengthening power within early hardening period (300-400 kg/sq.cm), especially at low positive temperatures: at 6-10 C (200- 220 kg/sq.cm). EFFECT: improved properties of the magnesial binding material. 1 tbl