| 摘要 |
FIELD: manufacture of building materials. ^ SUBSTANCE: building mortar destined for masonry and plastering, which contains Portland cement (43.93-47.59%), sand (42.05-45.37%), foaming additive (0.16-0.17%), and water (9.46-9.47%), is distinguished by having resin-saponin foaming agent as said foaming additive and further containing (i) 0.28-0.29% of 20% solution of orthosilicic acid (H4SiO4) sol, pH 3.1-4.0, modified with 0.9% of tartaric acid and (ii) 0.46-0.48% of additive "Antifreeze-DS". ^ EFFECT: reduced splitting, increased water-retention capacity, and lowered coefficient of heat conductivity. ^ 1 tbl |
