Excavation Pit for Wastewater Treatment Plant Construction
OBJECTIVE
To eliminate water inflow and soil washout through the concrete retaining structure of the excavation (diaphragm wall).
TECHNOLOGY
Sealing of contact zones between jet grouting columns within the excavation under active water inflow conditions using two-component fast-reacting resin injection.
MATERIAL
PolyJet GT hydro-active high-strength polyurethane resin with controlled reaction time.
DESCRIPTION
During excavation works, soil washout occurred through joints between jet grouting columns, accompanied by increasing water inflow.
As a result, ground voids formed behind the excavation retaining structure (diaphragm wall), and further construction works inside the pit were suspended.
RESULTS
The works were performed from within the excavation using PolyJet GT resin with a reaction time of approximately 15 seconds.
The two-component resin was injected under controlled pressure through small-diameter injection lances installed behind the diaphragm wall.
Upon contact with water, the resin expands, binds the surrounding soil, and displaces water. This process forms a high-strength, impermeable soil–polymer barrier with excellent adhesion to adjacent structural elements.
As a result, the issue was resolved within several hours. Water inflow into the excavation was completely eliminated, and the joints of the diaphragm wall were effectively sealed and structurally bonded.
To eliminate water inflow and soil washout through the concrete retaining structure of the excavation (diaphragm wall).
TECHNOLOGY
Sealing of contact zones between jet grouting columns within the excavation under active water inflow conditions using two-component fast-reacting resin injection.
MATERIAL
PolyJet GT hydro-active high-strength polyurethane resin with controlled reaction time.
DESCRIPTION
During excavation works, soil washout occurred through joints between jet grouting columns, accompanied by increasing water inflow.
As a result, ground voids formed behind the excavation retaining structure (diaphragm wall), and further construction works inside the pit were suspended.
RESULTS
The works were performed from within the excavation using PolyJet GT resin with a reaction time of approximately 15 seconds.
The two-component resin was injected under controlled pressure through small-diameter injection lances installed behind the diaphragm wall.
Upon contact with water, the resin expands, binds the surrounding soil, and displaces water. This process forms a high-strength, impermeable soil–polymer barrier with excellent adhesion to adjacent structural elements.
As a result, the issue was resolved within several hours. Water inflow into the excavation was completely eliminated, and the joints of the diaphragm wall were effectively sealed and structurally bonded.
If you’re dealing with a similar issue, request a free consultation — we’ll be happy to assist you.
Case studies
GeotechSintez — the manufacturer of materials and developer of technologies for soil stabilization and geotechnical solutions.
We create geotechnical solutions where traditional methods are ineffective or uneconomical by combining a scientific and technical approach with practical experience. Thanks to our unique expertise, comprehensive range of modern technologies, and dedicated service, our experts have successfully solved over 100 geotechnical tasks, including highly critical projects and those in harsh climatic conditions.
We create geotechnical solutions where traditional methods are ineffective or uneconomical by combining a scientific and technical approach with practical experience. Thanks to our unique expertise, comprehensive range of modern technologies, and dedicated service, our experts have successfully solved over 100 geotechnical tasks, including highly critical projects and those in harsh climatic conditions.
More than 100 projects completed by company experts
100+
Over 200 satisfied clients
200+
Over 40 years of combined expertise
40+