RAW MIXTURE AND METHOD FOR PRODUCING RAW MIXTURE FOR FOAM AND GAS CONCRETE OF NON-AUTOCLAVE HARDENING Russian patent published in 2017 - IPC C04B38/02 C04B38/10 C04B40/02 

FIELD: construction.

SUBSTANCE: raw mixture for foam and gas concrete of non-autoclave hardening comprises, wt %: Portland cement 51.76-51.90, a highly concentrated suspension with the humidity of 12-22%, with the particle content of less than 5 microns 30-50%, obtained by the wet grinding of quartz sand, 12.94 -12.97, the foaming agent "Penostrom" 0.09-0.27, the aluminium blowing agent containing more than 90 wt % of active aluminium with the particle size less than 100 microns 0.01-0.09, water 34.94-35.03. In the method for producing the above-mentioned raw material mixture comprising the preparation of the nanostructured modifier, the subsequent mixing of the resulting nanostructured modifier, the aluminium blowing agent, and water in an ultrasonic disperser under the action of ultrasound, feeding the resulting suspension to foam concrete mixer, where it is mixed at low speeds of 60 rev/min with Portland cement to complet system homogeneity, with the subsequent introducing of a predetermined amount of the blowing agent and the final stirring at high speeds of 250 rev / min for 3-5 minutes until obtaining the high foam mass stability, the nanostructured modifier preparation is carried out by means of the wet grinding of quartz sand to obtain a highly concentrated suspension with the humidity of 12-22% and the content of particles less than 5 microns 30-50%.

EFFECT: increasing the compressive strength and decreasing the thermal conductivity.

2 cl, 1 dwg, 8 tbl, 1 ex