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Void-Ratio Evolution in Deformable Soils Undergoing Solid-Mass Exchange
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DOI：10.1016/j.gete.2026.100906.png)
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Abstract
En 中文
Classical Soil Mechanics describes void-ratio evolution under the assumption of solid-mass conservation. While appropriate for many geotechnical problems, this assumption precludes the rigorous treatment of processes involving solid-mass exchange, such as erosion, dissolution, precipitation and cementation. This paper derives a general equation governing void-ratio evolution in deformable soils from the local balance of solid mass. The resulting formulation relates void-ratio changes to both skeleton deformation and source-sink terms accounting for solid-mass production or loss. It recovers the conventional Soil Mechanics relationship as an exact limiting case when solid-mass exchange vanishes and may therefore be regarded as a natural extension of the classical theory. The framework is independent of the constitutive law adopted to describe solid-mass exchange. Its scope is illustrated through montmorillonite dissolution in compacted bentonite under highly alkaline conditions. The formulation provides a unified theoretical basis for describing void-ratio evolution in deformable soils undergoing solid-mass exchange.
Keywords:
Void-ratio evolution
Reactive soils
Solid-mass exchange
Mass balance
Soil Mechanics
Journal
IF:
3.7
Papers:
754
Citations:
1.6K
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