Proposal of a homogenization model of the mechanical properties of a silt treated with lime and binder
Résumé
Economic and environmental imperatives are prompting project managers to switch places to the use of in situ soils for the construction of structures. Generally, the poor geotechnical performances of these soils are improved using treatment and compaction. The material studied in the present article is a lime and hydraulic binder treated low clayey silt. This article focuses on the feasibility of a numerical model to predict the mechanical behaviour of this treated soil. Previous authors' SEM (scanning electron microscope) observations of treated silt enabled to propose a microstructure of the soil which would be composed of aggregates of natural soils surrounded by a shell of hydrates. A multi-scale numerical homogenization model is presented to validate these hypotheses. Homogenized mechanical properties obtained numerically are compared with the Young modulus obtained by measuring celerity of S-waves and P-waves in a soil specimen. The experimental results lie within the range of the numerically obtained results.
| Origine | Fichiers produits par l'(les) auteur(s) |
|---|---|
| Licence |