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Aerosol injection in soft soils: permeability enhancement by fractures.
- Source :
-
Acta Geotechnica . Jul2024, p1-10. - Publication Year :
- 2024
-
Abstract
- In our recent paper, we reported the development and application of the aerosol injection technique to accelerate the consolidation in soft soils. Aerosol injection technique is a process that involves injecting air under high pressure into soft soil to create a network of fractures, which gives rise to enhanced permeability. In this paper, we present an experimental study on the permeability of soft soil specimens with pre-made fractures in a triaxial device. Some emphasis is given to the variation of permeability with time. Some major influence factors are considered, e.g. the fracture roughness, confining pressure, pre-consolidation pressure, soil structure and mineral composition. The decrease in permeability with time is mainly due to the self-healing mechanism in soft soils, which is dictated by the soil deformation and migration of fines driven by the confining pressure and hydraulic gradient. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SOIL permeability
*AEROSOLS
*SOIL mineralogy
*SOIL mechanics
*SOIL consolidation
Subjects
Details
- Language :
- English
- ISSN :
- 18611125
- Database :
- Academic Search Index
- Journal :
- Acta Geotechnica
- Publication Type :
- Academic Journal
- Accession number :
- 178273518
- Full Text :
- https://doi.org/10.1007/s11440-024-02356-2