DRY CONSTRUCTION MIXTURE FOR MAKING FLOOR UNDERLAYS Russian patent published in 2025 - IPC C04B28/02 

FIELD: construction materials.

SUBSTANCE: invention relates to the industry of construction materials, namely to dry construction mixtures which can be used in industrial and civil construction for making floor underlays. Dry construction mixture for making floor underlays contains cement, foam glass, limestone flour and functional additives, with the following ratio of components, wt.%: cement – 35-55, foam glass with fraction of not more than 4 mm – 25-45, limestone flour – 15-30, functional additives 0.17-0.43, in the composition: air-entraining additive – 0.01-0.05%, cellulose ether – 0.15-0.35%, polyamide – 0.01-0.03%.

EFFECT: levelling horizontal surfaces and increasing sound insulation and heat insulation of the floor.

1 cl, 1 tbl, 2 ex