Translartion. Region: Russians Fedetion –
Source: Peter the Great St Petersburg Polytechnic University – Peter the Great St Petersburg Polytechnic University –
The first all-Russian conference on injection technologies in construction, “Injection Days 2025”, is taking place at the Polytechnic University.
Key construction industry specialists, from leading experts and project developers to companies specializing in the implementation of injection technologies, gathered at the site to exchange practical experience and the latest achievements in this field.
Injection is the restoration of the integrity of buildings and structures made of stone, concrete, brick, strengthening of soil and rocks by filling cracks and voids with viscous polymeric materials by injection (under pressure). Injection is carried out to increase the bearing capacity of soils during their deformation, foundations and structures during their long-term operation, as well as to protect against the penetration of water or harmful substances.
The principle of operation of this technology is the point pouring of reinforcing materials into problem areas, which ensures reliable sealing of damage and returns the foundation or structure to its original solidity.
On the first day of the conference, experts discussed such issues as: structural repair using injection methods in construction, repair of cracks in foundation pylon structures using epoxy resin; sealing of underground parts of buildings and structures; repair of expansion joints of buried structures; deep injection of expansion joints; sealing of expansion joints using the deep injection method; elimination of jet seepage in concrete structures and junctions of metal cladding, stabilization of the soil base and lifting of a nine-story residential building using the polyurethane resin injection method, stabilization of foundation soils at industrial facilities, etc.
The participants also learned about the experience of their colleagues in using non-destructive methods of monitoring the condition of concrete and soil structures when planning and implementing repair and restoration work; the experience of stabilizing thawed permafrost soils; using the example of the Svetlinskaya hydroelectric power station, they learned about methods for restoring the tightness of a temperature joint, etc.
On the second day of the conference, reports were presented on the following topics: “Inspection of structures and foundation soils before their strengthening using modern non-destructive testing methods”, “Combined approach to comprehensive inspection of hydraulic structures for the purpose of developing design solutions”, “Experience in implementing projects to stabilize soil foundations in the Middle East”, etc.
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