METHOD OF PRODUCING CONCRETE ARTICLES Russian patent published in 2019 - IPC C04B41/50 

FIELD: construction.

SUBSTANCE: invention relates to production of construction materials and can be used to make concrete articles in civil and industrial construction, as well as for erection of special purpose. Method of producing concrete articles includes molding article, impregnating article at temperature of 20–30 °C followed by hardening. Impregnation is first carried out in a solution of iron (III) nitrate Fe(NO₃)₃ with concentration C=3 % for 36 hours, and then in a solution of ferric (III) hydroxide sol Fe(OH)₃ with concentration C=3 % for 36 hours.

EFFECT: reduction of water absorption of concrete products.

1 cl, 2 tbl, 3 ex