METHOD TO PREPARE MIXTURE FOR SAND-LIME BRICK AND SAND-LIME BRICK Russian patent published in 2011 - IPC C04B28/18 C04B111/20 

FIELD: construction.

SUBSTANCE: method to prepare mixture for sand-lime brick includes grinding of cellular glass down to grain size of 3.0-10.0 mm, its impregnation to saturation with lime suspension, containing 10 wt % of solid substance Ca(OH)₂ and 0.5-7.0 wt % of hydroxide of univalent alkaline metal, mixing of produced material with slaked lime, additional moistening to moulding humidity. Sand-lime brick is characterised by the fact that it is made of raw mix prepared by the method specified above, is moulded as a piece under pressure and has been through hydrothermal treatment in autoclave.

EFFECT: expanded arsenal of technical facilities to produce strengthened sand-lime brick with low heat and sound conductivity.

2 cl, 1 tbl, 1 ex