METHOD FOR PRODUCING CONCRETE BUILDING PRODUCTS, concrete mix FOR CONCRETE BUILDING PRODUCTS, granular aggregate on the basis of natural VYSOKOKREMNEZEMISTYH sedimentary rocks for concrete mixtures and concretes building products

摘要

FIELD: construction.;SUBSTANCE: granulated filler for concrete mix is arranged in the form of granules with size of 0.5-10.0 mm, comprising nucleus and shells, where nucleus is produced by granulation of mixture of the following components jointly ground to specific surface of 150-250 m²/kg - natural sedimentary highly siliceous rock and alkaline metal hydroxide at their mass ratio of 0.70-0.95 : 0.05-0.30 with binder - aqueous solution of sodium silicate with density of 1.2-1.3 g/cm³ in amount of 0.1-7.0% from mixture, protective shell shaping on nucleus surface is carried out in medium of dry dusty mixture of jointly ground quicklime and sodium fluorsilicate at their mass ratio of 0.85-0.95 : 0.05-0.15, with further hardening to strength of at least 0.12 MPa. Concrete mix for manufacture of construction products includes the following components, wt %: above mentioned filler 5-40, binder 10-25, fine filler 15-45, water - the rest. Method for production of concrete construction products includes mixing of above mentioned mix components, moulding of construction products, soaking in molds and heat-and-moisture treatment at atmospheric pressure and temperature of 85-95°C.;EFFECT: higher water resistance and frost resistance, reduced heat conductivity with preservation of strength parameters of concrete construction products, lower energy inputs in process of products making due to lower energy inputs during filler production.;4 cl, 1 ex, 2 tbl