Jet Grout Stabilization of Peaty Soils Under a Railway Embankment in Italy

by Battista De Paoli, RODIO SpA, Italy,
Renato Tornaghi, RODIO SpA, Italy,
Donald A. Bruce, RODIO SpA, Italy,

Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices


The construction of two railway embankments on a peaty soil deposit up to 7m thick required a foundation improvement program meeting very strict specifications in terms of environmental protection, speed of execution and early effectiveness. The problem was solved by a jet grouting procedure, selected and optimized after exhaustive field testing. Design features and results of laboratory tests on samples recovered after the treatment are outlined, together with a statistical interpretation intended to estimate the in situ composition of the treated soil. Finally, the instrumentation installed for the long term monitoring of strain distribution in the ground is described, and the preliminary data collected are reviewed.

Subject Headings: Soil stabilization | Soil grouting | Field tests | Jet grouting | Soil treatment | Soil stress | Soil cement | Italy | Europe

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