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Artificial Ground Freezing

Part of the Encyclopedia of Earth Sciences Series book series (EESS)

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Artificial ground freezing (AGF) is a technique of freezing of pore water in saturated and partially-saturated soil which changes the thermal and mechanical properties such as stiffness, strength, and creep behavior of soil. This change in properties increases the load-carrying capacity of the frozen soil which is exploited in various construction works. Originally, the AGF was first developed by F.H. Poetsch in 1883. Poetsch’s process involves the circulation of a refrigerated coolant through a series of subsurface pipes to extract heat, thus converting the soil water to ice, creating a strong, watertight material. Most ground freezing systems are quite similar in principle, with subtle differences in the engineering aspects of the individual sites. The single most important component of a ground freezing system is the subsurface refreezing system, consisting of a series of refrigeration pipes installed with various drilling techniques. The quantity, spacing, depth, and...

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© 2011 Springer Science+Business Media B.V.

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Kayastha, R.B. (2011). Artificial Ground Freezing. In: Singh, V.P., Singh, P., Haritashya, U.K. (eds) Encyclopedia of Snow, Ice and Glaciers. Encyclopedia of Earth Sciences Series. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-2642-2_28

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