METHOD TO MANUFACTURE GRANITE-CEMENT PRODUCTS Russian patent published in 2013 - IPC C04B40/00 B28B1/10 

FIELD: construction.

SUBSTANCE: in the method to manufacture granite-cement products from fine-grained concrete, including mixing within 1…5 min. of fine-grained filler - siftings of granite grinding with fraction of 2.5-5 mm, 0.315-0.63 mm and at least 0.14 mm with portland cement, water and plasticising additive - of series Glenium® ACE-430 on the basis of polycarboxylate ether, by vibration pressing of products from the produced mixture, with their subsequent hardening under normal conditions - air temperature - 15…20°C, air moisture - 90…100%, mixing is carried out in grinding-mixing mills with simultaneous vibration with pressure of rollers 0.02…0.05 MPa, vibration at frequency of vibrations 40…50 Hz and amplitude of oscillations 0.7…0.8 mm, and vibration pressing of products is carried out at frequency of oscillations 40-50 Hz, amplitude of oscillations 0.3-0.7 mm and pressure of pressing 3·10^-3-6·10^-3 MPa.

EFFECT: improved homogeneity of a concrete mix and uniformity of concrete properties with simultaneous increase of strength properties, wear resistance and frost resistance of products.

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