METHOD OF AERODYNAMIC INJECTION OF WATERPROOFING COMPOSITION AT CARRYING OUT WORKS ON INTERNAL GROUND PROTECTION OF CONSTRUCTION OBJECTS Russian patent published in 2018 - IPC E02D31/02 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular, to a method for supplying a waterproofing composition for eliminating filtering cracks, channels and pores in underground parts of building objects. Method of aerodynamic injection of a waterproofing composition during the work on the internal ground protection of construction objects includes preliminary drilling of bore-holes in the underground parts of construction objects and injection of a waterproofing composition into them under a pressure of 0.2–1 MPa. For injection, a waterproofing composition is used, including dry ingredients containing natural fine-dispersed bentonite-montmorillonite minerals, natural fine-fraction silica, sodium polyacrylate or acrylic water-absorbing polymer of AK series and anionic polyacrylamide with a molecular mass of not less than 15 million, along with a structurant in the following ratio of components, wt.%: natural fine-dispersed bentonite-montmorillonite minerals 10–99, natural fine-fraction silicon dioxide 0–89.9, sodium polyacrylate or acrylic water-absorbing polymer of AK series 0.1–50, anionic polyacrylamide 0–30, structurant 0–70. Injection into the holes of underground parts of construction sites is carried out with the help of a pneumosupercharger with dry components of the waterproofing composition, with the ability to interact with the mixing chamber, communicated with the tank with the amendment and the compressor and providing a waterproofing structural mixture, the injection thereof into the bore-holes is carried out at a primary pressure of at least 0.2 MPa, followed by an increase in pressure to 1 MPa, and the time required for activation is 10–20 seconds.

EFFECT: technical result consists in improving the quality and reliability of protection of the waterproofing of underground parts, ensuring environmental friendliness when carrying out waterproofing works, expanding the operational capabilities of using components of the composition.

3 cl, 2 tbl, 1 dwg