Real-time water permeability evolution of a localized crack in concrete under loading

Rastiello, Giuseppe; Boulay, Claude; Pont, Stefano Dal; Tailhan, J.-L.; Rossi, Pierre

doi:10.1016/j.cemconres.2013.09.010

Cited by 81 publications

(108 citation statements)

References 27 publications

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“…This can be seen as purely heuristical but this choice seems consistent with the double scale asymptotic analysis of an elastic saturated porous matrix leading to Biot's modeling, see Auriault and Sanchez-Palencia [2] and Auriault [4]. On the other hand, the dependence of the permeability K with respect to d (e) is completely phenomenological (e.g.Rastiello et al [24]). The damage of the cracks is due to the opening and the shearing of the cracks.…”

Section: Damage Parameter and Evolution Law Dmentioning

confidence: 76%

“…As in the previous section, the macroscopic behaviour is obtained through the solution of a self balanced problem set on the elementary cell, namely problem (31). The self balanced filtration problem (24) remains essentially unchanged and is not considered in this section.…”

Section: Numerical Results: Damagementioning

confidence: 99%

“…As problems (22) and (24) are linear, it is standard (see Sánchez-Palencia [25]) or (Bensoussan et al [6]) to prove that u (1) linearly depends on e x u (0) and p (0) , and p (1) on − − → grad x p (0) . Consequently, by the constitutive equation (21b) and the expression (21b), σ (0) and κ (0) depend linearly on e x u (0) and p (0) and so does σ and κ defined by (14) and (18).…”

Section: Macroscopic Constitutive Equationsmentioning

confidence: 99%

“…Similarly to the computation of the macroscopic mechanical characteristics of the homogenized poroelastic medium and according to section 3.5, the macroscopic permeability matrix is obtained through the solution of problem (24), for a macroscopic pressure gradient − − → grad x p (0) successively parallel to the directions 1 and 2, i.e. respectively e 1 and e 2 .…”

Section: Numerical Validation: Permeabilitymentioning

confidence: 99%

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Homogenization of a cracked saturated porous medium: Theoretical aspects and numerical implementation

Argilaga

Papachristos

Caillerie

et al. 2016

International Journal of Solids and Structures

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The purpose of this work is to determine, via a homogenization technique and in the framework of small strains, the macroscopic poroelastic properties of a saturated, deformable, cracked porous medium. The poroelastic matrix is assumed to be homogeneous and the cracks to be periodically distributed, the size of the period being small with respect to the size of the sample. The considered up-scaling method (based on asymptotic expansions) will provide two uncoupled mechanical and hydraulic problems describing the overall behavior of the material. The degradation of the mechanical properties due to damage is then introduced. Damage depends on cracks' opening, thus making the problem non-linear. A numerical solution of the problem is provided using finite elements. Stress-strain time-histories corresponding to an oedometric and a biaxial test are used as numerical examples. The numerical solution allows the exploration of the non-linear anisotropic behavior along with the bifurcation phenomenon.

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Section: Damage Parameter and Evolution Law Dmentioning

confidence: 76%

Section: Numerical Results: Damagementioning

confidence: 99%

Section: Macroscopic Constitutive Equationsmentioning

confidence: 99%

Section: Numerical Validation: Permeabilitymentioning

confidence: 99%

See 2 more Smart Citations

Homogenization of a cracked saturated porous medium: Theoretical aspects and numerical implementation

Argilaga

Papachristos

Caillerie

et al. 2016

International Journal of Solids and Structures

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“…This regime is characterized by a slower rate of permeability increase with respect to the second regime. Many authors have shown that Poiseuille's law overestimates a fluid flow in a real crack because secondary effects such as crack roughness, crack opening variation and tortuosity are not taken into account. A correction factor, generally denoted as ξ in the literature, is introduced in order to account for those geometrical parameters.…”

Section: Introductionmentioning

confidence: 99%

An original semi‐discrete approach to assess gas conductivity of concrete structures

Dandachy

Briffaut

Dufour

et al. 2016

Num Anal Meth Geomechanics

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Summary For civil engineering structures with a tightness role, structural permeability is a key issue. In this context, this paper presents a new proposition of a numerical modelling of leakage rate through a cracked concrete structure undergoing mode I cracking. The mechanical state of the material, considered in the framework of continuum mechanics based on finite element modelling, is described by means of the stress‐based nonlocal damage model which takes into account the stress state and provides realistic local mechanical fields. A semi‐discrete method based on the strong discontinuity approach to estimate crack opening is then considered in the post‐treatment phase. Using a Poiseuille's like relation, the coupling between the mechanical state of the material and its dry gas conductivity is performed. For validation purposes, an original experimental campaign is conducted on a dry concrete disc loaded in a splitting setup. During the loading, gas conductivity and digital image correlation analysis are performed. The comparison with the 3D experimental mechanical global response highlights the performance of the mechanical model. The comparison between crack openings measured by digital image correlation and estimated by the strong discontinuity method shows a good agreement. Finally, the results of the semi‐discrete approach coupled with the gas conductivity compared with experimental data show a good estimation of the structural conductivity. Consequently, if the mechanical problem is well modelled at the global scale, then the proposed approach provides good estimation of gas conductivity. Copyright © 2016 John Wiley & Sons, Ltd.

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Autogenous self‐healing of concrete: Experimental design and test methodsA review

Lahmann

Edvardsen

Keßler

2022

Engineering Reports

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Cracks in concrete structures can serve as pathways for aggressive chemical substances that can lead to a progressive deterioration of the cement stone as well as of the reinforcement, affecting the load capacity, service life and useability of concrete structures. However, concrete and reinforced concrete exhibit an intrinsic ability to heal cracks, defined as autogenous self‐healing. This effect includes the precipitation of calcium carbonate in the presence of water and CO2 and is accompanied by continued hydration, swelling, and mechanical blocking of the crack pathway. Experiments led to the inclusion of crack sealing by autogenous self‐healing in Eurocode 1992–3 for water retaining concrete structures. However, despite code restrictions, autogenous self‐healing of concrete shows limited effectiveness in practice. This indicates the need for further research to provide engineers with reliable design rules. Therefore, this study aims for giving a broad literature review on the state‐of‐the‐art knowledge on autogenous self‐healing, the boundary conditions, consensus, and controversy of processes and factors influencing the efficiency of autogenous self‐healing. Regarding the transferability of laboratory results to real concrete constructions, materials, crack initiation techniques, experimental concepts, and methods for assessing the effectiveness of autogenous self‐healing are discussed and recommendations for future experiments are set.

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Real-time water permeability evolution of a localized crack in concrete under loading

Cited by 81 publications

References 27 publications

Homogenization of a cracked saturated porous medium: Theoretical aspects and numerical implementation

Homogenization of a cracked saturated porous medium: Theoretical aspects and numerical implementation

An original semi‐discrete approach to assess gas conductivity of concrete structures

Autogenous self‐healing of concrete: Experimental design and test methodsA review

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