METHOD FOR PREPARING INJECTION MIXTURE FOR CEMENTATION OF SOILS AND METHOD OF ITS INTRODUCTION INTO THE SOIL Russian patent published in 2021 - IPC E02D3/12 

FIELD: building indusrtry.

SUBSTANCE: group of inventions relates to construction. In the context of the intensive development of underground space in conditions of dense urban development in complex hydrogeological and mining-geological conditions, the problem of liquidating active water seepages both at the construction stage and during the operation of underground structures becomes extremely urgent, and it is solved by the method of preparing an injection mixture for cementing soil consolidation including the preparation of an aqueous solution of sodium phosphate, by adding sodium phosphate to water in an amount of 24% mass fraction, then with continuous stirring for 120 150 seconds, prepare a cement mixture by introducing Portland cement into the specified aqueous solution of sodium phosphate in an amount of 50-60% mass fraction of the mass of the resulting an aqueous solution of sodium phosphate, and then, with continuous stirring for 120-150 seconds, an aqueous solution of sodium silicate is introduced into the prepared cement mixture in an amount of 6% of the mass fraction of the resulting cement mixture.

EFFECT: said invention is aimed at liquidating active water seepages both at the construction stage and during the operation of underground structures.

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