Degradation mechanisms of the hydro-mechanical behaviour of a lime-treated clay exposed to wetting and drying cycles
Degradation mechanisms of the hydro-mechanical behaviour of a lime-treated clay exposed to wetting and drying cycles
The present experimental study is focused on analysing the degradation processes of the mechanical performances of a lime-stabilised expansive clay exposed to wetting/drying cycles of various amplitude. Fully cured specimens were exposed to several wetting and drying cycles with suction-controlled techniques, and the maximum suction applied during the cycles ranged from 0.30 MPa to 95 MPa. This study highlighted that the main deterioration mechanism of lime-treated expansive soils exposed to cyclic wetting and drying is connected to micro-structural changes whose intensity were controlled by the amplitude of the cycles. The improved understanding of these mechanisms, as provided by this work, has the potential to more effectively forecast the conditions that could promote durability of lime-stabilised expansive soil.
Nicolas Chabrat; Gianpiero Russo; E. Vitale; Olivier Cuisinier; Farimah Masrouri
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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