INSULATING COMPOSITION FOR PROTECTION FROM INTENSIVE ABSORPTION IN INTERVALS OF FISSURED ROCKS Russian patent published in 2015 - IPC C09K8/467 

FIELD: mining.

SUBSTANCE: insulating composition for protection from intensive absorption in the intervals of fissured rocks, comprising cement foam material CFM of grades A, B, C and D, water and setting accelerator, characterised in that the composition additionally comprises a plasticiser and a foam stabiliser, at that it comprises the setting accelerator as a mixture of potassium chloride and sodium carbonate in a weight ratio of 1:1, respectively, the foam stabiliser - as a mixture of low molecular weight hydroxyethyl cellulose and ethoxylated nonylphenol with 9 carbon atoms in the alkyl radical and 12 moles of ethylene oxide, attached to a mole of alkyl phenol, in a weight ratio of 0.4:1, respectively, and the plasticiser - as high-molecular anionic surfactant sodium polycarboxylate in the following ratio of components, mass parts: CFM - 100.0; the said setting accelerator - 8.0-12.0; the said foam stabiliser - 0.5-0.7; the said plasticiser - 0.5-0.9; water - 50.0-60.0.

EFFECT: increase in the insulating properties in elimination of absorption by reducing the setting time, increase in the strength and adhesion properties, increase in resistance to erosion.

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