Feedback mechanisms in chemo-mechanical multi-scale modeling of soil and sediment compaction

Hueckel, Tomasz; Hu, Liang

doi:10.1016/j.compgeo.2009.02.005

Cited by 18 publications

(15 citation statements)

References 22 publications

(39 reference statements)

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“…For such barrier, the swelling pressure of compacted bentonite makes it possible to maintain the stability of the repository structure, and the low permeability makes it possible to restrict the transfer of radionuclide released from the waste packages after possible failure of canister. In the underground repository, there are certain chemical composition in the pore water of compacted bentonite and surrounding rock Sanchez et al, 2006;Hueckel and Hu, 2009). Meanwhile, some mineral substance will be gradually dissolved from compacted bentonite, surrounding rock, or concrete facility to the pore water in the process of long-term interaction between themselves (Fernandez et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Swelling pressure and hydraulic conductivity of compacted GMZ01 bentonite under salinization–desalinization cycle conditions

Chen

Zhu

et al. 2015

Applied Clay Science

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Section: Introductionmentioning

confidence: 99%

Swelling pressure and hydraulic conductivity of compacted GMZ01 bentonite under salinization–desalinization cycle conditions

Chen

Zhu

et al. 2015

Applied Clay Science

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“…Extensive experimental and analytical investigations on the effects of moisture on different materials have been conducted since 1932 (Nicholson, 1932;Gandhi et al, 1987;Weitsman, 1987;Liu et al, 2005;Hueckel and Hu, 2009;Muliana et al, 2009;Hu et al, 2012). Researchers developed different models to simulate the response of polymers and their composites subjected to environmental effects.…”

Section: Introductionmentioning

confidence: 99%

Microstructural modeling of asphalt concrete using a coupled moisture–mechanical constitutive relationship

Shakiba

Darabi

Al‐Rub³

et al. 2014

International Journal of Solids and Structures

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a b s t r a c tThe coupled effect of moisture diffusion and mechanical loading on the microstructure of asphalt concrete is studied. The traditional Continuum Damage Mechanics (CDM) framework is modified to model detrimental effects of moisture and mechanical loading. Adhesive/cohesive moisture-induced damage constitutive relationships are proposed to describe the time-dependent degradation of material properties due to moisture. X-ray two-dimensional (2D) computed tomography-imaging technique is used to construct finite element (FE) microstructural representation of a typical dense-graded asphalt concrete. After being calibrated against pull-off experiments, the proposed moisture-induced damage constitutive relationship, which is coupled to thermo-viscoelastic-viscoplastic-viscodamage mechanisms, is used to simulate the microstructure of asphalt concrete. Simulation results demonstrate that the generated 2D FE microstructural representation along with the coupled moisture-mechanical constitutive relationship can be effectively used to model the overall thermo-hygro-mechanical response of asphalt concrete.Published by Elsevier Ltd.

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“…He returns to this mechanism in the case of loess, where water from external reservoirs is listed as removing soluble binders destroying intergranular bond(s), with the same macroscopic effect of a decreasing cohesion. Sensitivity of basic mechanical soil properties to chemical processes in the environment has been seen to become a critical factor of stability of slopes and coastal structures for a variety of reasons, from periodic changes in salinity of pore water affecting clay behavior of coastal slopes 2,3 to oxidation and dissolution of sandstone, 4 to dissolution of calcite, 5 dissolution of silica in aging sediments, 6 dissolution of gypsum in abandoned mines, 7 to mention just a few examples. In a more modern day context one needs to add that the dissolution of cementation bonds indicated by Terzaghi 1 may be montmorillonite-illite mixtures were transformed into montmorillonite associated with a strength change, including a 30% drop in shear strength.…”

Section: Introductionmentioning

confidence: 99%

“…Rate equations for mineral dissolution and precipitation are considered as known. 13,14 Variable geometrical characteristics of the micro-structure are used to determine the evolving specific surface area (see 6,15 ) and the bond resisting cross-sectional area at the micro-scale, and variable porosity at the macro-scale, which become key variables linking the micro-scale and macro-scale mechanisms. At the macro-scale, a reactive chemo-plasticity model 17,18 is combined with a model for bonded geomaterials.…”

Section: Introductionmentioning

confidence: 99%

A micro-scale inspired chemo-mechanical model of bonded geomaterials

Gajo

Cecinato

Hueckel

2015

International Journal of Rock Mechanics and Mining Sciences

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a b s t r a c tChemical processes influence the mechanical properties of geomaterials, resulting in either strengthening or weakening effects, the latter being particularly critical for long-term safety assessment in civil and energy engineering. Coupling of chemical and mechanical processes in cemented soils and rocks is investigated starting form a micro-structural chemo-mechanical model. The model consists of an assembly of grains and bonds undergoing dissolution or precipitation of mineral mass, affecting geometrical characteristics of the assembly. The principal such characteristics are the evolution of specific surface area and of bond cross-sectional area at the micro-scale, and of porosity at the macro-scale, which become key variables linking the micro-scale and macro-scale mechanisms. This framework has the advantage of avoiding unphysical situations, such as the occurrence of mineral precipitation with no pore space available or the occurrence of dissolution with no cementing material left. The evolution of important micromechanical quantities, such as the number of active bonds and their cross section is tracked. At the macro-scale, a reactive chemo-plasticity model is combined with a model for bonded geomaterials. The resulting micro-to macro-scale transition, schematically applicable to both materials with reactive grains and bonds and materials with only reacting bonds, is validated against the available experimental evidence, concerning calcarenite with both reactive bonds and grains made of the same mineral. The model is thus shown to provide a flexible framework for a consistent interpretation of experimental loading paths, and can be readily extended to more complex circumstances.

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Feedback mechanisms in chemo-mechanical multi-scale modeling of soil and sediment compaction

Cited by 18 publications

References 22 publications

Swelling pressure and hydraulic conductivity of compacted GMZ01 bentonite under salinization–desalinization cycle conditions

Swelling pressure and hydraulic conductivity of compacted GMZ01 bentonite under salinization–desalinization cycle conditions

Microstructural modeling of asphalt concrete using a coupled moisture–mechanical constitutive relationship

A micro-scale inspired chemo-mechanical model of bonded geomaterials

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