Artificial ground freezing 001
Site: Cesena
Activity: drilling for Naples subway
Frigo Tecnica Internazionale designs and manufactures refrigeration plants for artificial ground freezing, a technique with which it is possible to temporarily consolidate and waterproof the subsoil in the presence of aquifers or unstable soils.
This technology is used in highly critical geotechnical contexts, such as excavations in urban areas, railroad construction sites or infrastructure works near waterways. The systems supplied by Frigo Tecnica Internazionale reach temperatures as low as -80 °C and use closed circuits with refrigerant fluids, capable of solidifying the moisture present in the soil without contamination or environmental alteration.
Each system is custom-designed to adapt to the geological conditions of the site, the constraints of the construction site and the temporal requirements of the work. The work includes: refrigeration system, cryogenic piping, and temperature control and monitoring systems.
Frigo Tecnica Internazionale manages the entire cycle of industrial refrigeration equipment implementation, from design to commissioning.
Each project is the result of a detailed analysis that considers thermal loads, operating conditions, and current regulations (F-Gas, ATEX), with the goal of developing efficient and reliable solutions.
Engineering includes refrigeration system sizing, component selection, and control logic. In-house manufacturing ensures construction quality and traceability. Onsite installation includes assembly, wiring, and integration with any existing systems.
Testing, performance checks and issue of technical documentation are performed during commissioning of the refrigeration system.
Structured after-sales services complete the offering: maintenance, service, retrofit and revamping to ensure operational continuity and compliance with environmental regulations.
Preliminary technical analysis, definition of needs, assessment of regulatory and operational constraints, with the goal of developing a tailored, highly efficient solution.
Refrigeration system sizing, component selection, and control logic design. Everything is geared toward ensuring reliability, performance, and ease of operation.
In-house production of components in controlled environments to ensure build quality, traceability, and certain lead times.
On-site system installation, including mechanical assembly, electrical wiring, thermal insulation piping works and integration with any existing systems.
Performing functional testing, performance verification, testing and issuing technical documentation upon completion of the system.
Routine and extraordinary maintenance, technical support, retrofitting and revamping to ensure operational continuity and compliance with environmental regulations.
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In 2021, Frigo Tecnica Internazionale joins the Arneg Group, a leader in the refrigeration industry, thus being able to count on a widespread presence internationally.




Frigo Tecnica Internazionale has designed and installed systems for artificial ground freezing in critical geotechnical settings. Our devices are used to safely consolidate and waterproof the subsurface, providing temperatures down to -80 °C with sustainable and reversible solutions.
Site: Cesena
Activity: drilling for Naples subway
Site: Cesena
Activity: subway drilling in AUSTRALIA
Frigo Tecnica Internazionale stands out for its high level of specialization in the construction of cryogenic systems for the complex infrastructure sector.
The proposed solutions allow for safe operation even in sandy, silty or highly permeable soils, minimizing the risks of subsidence or infiltration. Automation systems allow continuous temperature monitoring and dynamic adaptation to excavation conditions.
The modular approach ensures rapid installation and easy removal at the end of the operation, with no permanent impact on the soil. The technology is also perfectly suited to urban settings and confined operating spaces.
It is used to consolidate unstable or water-saturated soils near excavations, tunnels, subway stations or deep foundations, especially in urban areas with high geotechnical criticality.
The systems designed by Frigo Tecnica Internazionale can reach -80 °C, which is enough to transform groundwater into a solid, impermeable structure without the use of chemical additives.
Yes, the process takes place in a closed loop and does not involve soil injections. Refrigerants do not come into contact with the environment, which avoids contamination risks to groundwater or natural substrates.
Stabilization is temporary and lasts as long as the operation. Once the system is removed, the soil gradually returns to its natural state, making this technique ideal for reversible or temporary construction sites.