METHOD TO PREPARE CONCRETE MIX ON POROUS FILLER Russian patent published in 2012 - IPC C04B38/08 C04B40/00 C04B111/20 

FIELD: construction.

SUBSTANCE: in the method to prepare a light concrete mixture on a porous filler, including mixing of portland cement with an additive, a porous filler and tempering water, first a superplasticiser additive in the amount of 0.4-0.5% of portland cement mass is added into 50-60% of the total amount of tempering water and mixed with portland cement during 50-60 s, then the whole porous filler is added, such as highly light porous filler with medium density of not more than 250 kg/m³, and again mixed for 70-80 s, afterwards the remaining part of tempering water is added, and the mixture is finally mixed for 30-40 s.

EFFECT: higher uniformity of cement dough distribution along highly light filler surface and its tighter packing in concrete, increased strength of concrete and reduction of its heat conductivity.

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