METHOD TO REINFORCE SOILS IN BUILDING FOUNDATIONS AND EARTH BED OF LINEAR STRUCTURES ON PERMAFROST SOILS Russian patent published in 2015 - IPC E02D27/35 E02D17/20 

FIELD: construction.

SUBSTANCE: method consists in drilling of wells, damage of highly icy fragments via drilled wells with subsequent formation of reinforcing elements in the base under the structure in the form of piles by means of filling of the produced cavities with a soil and cement pulp. Piles are formed by formation of a soil and cement body simultaneously with drilling of wells by injection of cement mortar under high pressure with soil mixing at reverse movement of a drilling tool. Simultaneously with formation of the soil and cement body they thaw permafrost soil by addition of a concrete strength gain accelerator into the injected cement mortar for activation of concrete hydration and increased heat evolution in the process. The concrete strength gain accelerator in the injected cement mortar is burned anhydrous lime in the amount of 10-15% and hydrochloric acid in the amount of 1-2%.

EFFECT: reduced time for erection of reinforcing piles and accelerated strength gain by erected piles.

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