Influence of Water Saturation on the geotechnical behaviour of a lime treated silt

To reduce soil excess, the refill of trenches for sewage systems with the excavated soil is being developed in Flanders – Belgium. Clayey and silt soils need to be stabilised to allow their application in these refills. A one-year trial program has been executed to evaluate the geo-mechanical evolution of a lime treated soil facing water saturation. A silt, treated with 2 % quicklime was dynamically compacted, at different compaction energies, in four big metallic barrels. The mechanical evolution of the soil was assessed. In parallel, shear box strength tests were carried out on the treated soil before saturation, and after one year of saturation, in order to demonstrate the cohesion and friction angle evolution of the treated soil.status: publishe