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Impact of Colloidal Silica Treatment on an Earthfill Dam
The impact of the use of sand treated with Colloidal Silica (CS) on a model 80 m high-earthfill dam was assessed through numerical modelling. The hydro-mechanical properties of the CS-treated soil were taken from a previous laboratory study. Different strategies of treatment placement were studied, with increasing volumetric fractions of the dam being replaced by the treated material. Staged construction of the earthwork was simulated to evaluate the horizontal and vertical displacements at critical points within the dam. Different kinematics have been observed, depending on the quantities of CS-treated material included in the soil structure. Moreover, the use of the treated soil was beneficial in terms of water outflow and upstream slope stability, in correspondence with different water reservoir levels. Different strategic patterns of CS-treated sand placement are proposed herein to fully exploit the storage capacity of the dam, optimizing its stability.
Impact of Colloidal Silica Treatment on an Earthfill Dam
The impact of the use of sand treated with Colloidal Silica (CS) on a model 80 m high-earthfill dam was assessed through numerical modelling. The hydro-mechanical properties of the CS-treated soil were taken from a previous laboratory study. Different strategies of treatment placement were studied, with increasing volumetric fractions of the dam being replaced by the treated material. Staged construction of the earthwork was simulated to evaluate the horizontal and vertical displacements at critical points within the dam. Different kinematics have been observed, depending on the quantities of CS-treated material included in the soil structure. Moreover, the use of the treated soil was beneficial in terms of water outflow and upstream slope stability, in correspondence with different water reservoir levels. Different strategic patterns of CS-treated sand placement are proposed herein to fully exploit the storage capacity of the dam, optimizing its stability.
Impact of Colloidal Silica Treatment on an Earthfill Dam
Fraccica, Alessandro (author) / Spagnoli, Giovanni (author) / Romero, Enrique (author) / Arroyo, Marcos (author)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 167-178
2022-03-17
Conference paper
Electronic Resource
English
Impact of Colloidal Silica Treatment on an Earthfill Dam
| British Library Conference Proceedings | 2022
Impact of Colloidal Silica Treatment on an Earthfill Dam
| TIBKAT | 2022
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