CRUDE MIXTURE FOR PRODUCTION OF CARBONIZED CONSTRUCTION ARTICLES Russian patent published in 2021 - IPC C04B2/00 

FIELD: chemistry; construction.

SUBSTANCE: invention relates to production and use of construction materials and articles, specifically to crude mixtures for production of carbonized construction materials and articles hardening in a medium with high concentration of carbon dioxide (CO₂). Raw mixture for production of carbonized construction articles, including binder and carbonate aggregate, wherein said binder is dolomite cement obtained by firing a dolomite material at a temperature of not more than 750-850°C, and as filler - fine granularity of up to 5 mm secondary dolomite material obtained during crushing initial dolomite on sorted crushed stone fractions, with following ratio of ingredients by dry substance, wt%: dolomite cement 20-50; fine-dispersed secondary dolomite material 50-80, water in amount of 5-20% of total weight of binder and filler, and hardening of construction articles is carried out in medium of carbon dioxide with concentration of 30% for 180 minutes.

EFFECT: technical result consists in reduction of prime cost, expansion of raw material base for production of construction materials, reduction of CO₂ emission, improvement of ecological situation of territories with considerable accumulation of various mineral secondary raw materials, in particular, fine dolomites with fraction up to 5 mm.

1 cl, 3 tbl