MORTAR Russian patent published in 2013 - IPC C04B28/02 C04B24/08 C04B24/18 C04B111/20 

FIELD: chemistry.

SUBSTANCE: mortar, which contains Portland cement, water and plasticising additive, additionally contains carbamide, and as plasticising additive applied is mixture of lignosulfonate and mixture of oxyethyl and oxypropyl ethers of polyacrylic acids, and ratio of mixture of ethers of polyacrylic acids is from 1:2 to 1:60, excluding ratio 1:3n, where n=1,2,3…20, with content of lignosulfonate in quantity from 0.20 to 0.45 wt% of Portland cement content, and content of carbamide constitutes from 0.01 to 0.10% of Portland cement weight with content of water being from 40 to 60% of Portland cement weight. Mortar can additionally contain sodium sulfate in quantity, equal to quantity of carbamide.

EFFECT: increased strength of obtained cement stone.

2 cl, 17 ex, 1 tbl