Modeling of damage-healing and nonlinear self-healing concrete behavior: Application to coupled and uncoupled self-healing mechanisms

Oucif, Chahmi; Voyiadjis, George Z.; Rabczuk, Timon

doi:10.1016/j.tafmec.2018.04.010

Cited by 39 publications

(43 citation statements)

References 63 publications

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“…The values of h = 0, 0 < h < 1, and h = 1 represent the unhealed, partially healed, and fully healed material states, respectively. In [88], the authors defined two healing variables that reflect the healing effect in the case of coupled and uncoupled self-healing mechanics. The former mechanism assumes that the healing and damage occur simultaneously, while the latter one assumes that the healing is introduced when damage is constant (more details are given in Section 3.6).…”

Section: Damage and Healing Configurationsmentioning

confidence: 99%

“…The former mechanism assumes that the healing and damage occur simultaneously, while the latter one assumes that the healing is introduced when damage is constant (more details are given in Section 3.6). The expression of the healing variable in the case of coupled self-healing mechanism (h c ) is similar to Equation (7), while, for the uncoupled self-healing mechanism (h u ), it is written as follows [88]: When damages are removed from (Figure 1c), the relationship between the nominal stress σ and effective stressσ becomes as follows [43,66,76]: According to CDHM and following the configurations in Figure 2, Equation (9) becomes in the case of self-healing materials as follows [88,90]:…”

Section: Damage and Healing Configurationsmentioning

confidence: 99%

“…In the previous work [88], a continuum damage-healing model for autonomous and autogenous self-healing concrete was proposed. In this model, a time-dependent healing variable representing the opposite of the damage variable was proposed.…”

Section: Damage-healing Law For Concretementioning

confidence: 99%

“…The damage healing model proposed in [88] was formulated based on the introduction of the healing variable into the damage model. When Mazars damage model for concrete material was adapted, the damage variable was expressed as [143]…”

Section: Damage-healing Law For Concretementioning

confidence: 99%

“…Moreover, the softening behavior of brittle materials leads to mesh-dependence of their responses due to strain localization when local damage-healing models are used. This issue was thoroughly addressed in CDM using non-conventional damage models (e.g., gradient and nonlocal damage models), while non-conventional damage-healing model is not yet addressed except for a short explanation given in [88].…”

mentioning

confidence: 99%

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Continuum Damage-Healing and Super Healing Mechanics in Brittle Materials: A State-of-the-Art Review

Oucif

Mauludin

2018

Applied Sciences

Self Cite

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Over the last several years, self-healing materials have become more and more popular in terms of damage reparation. Moreover, a recent theoretical investigation of super healing materials that aims at repairing and strengthening itself was also developed. This research area is well known by the rich experimental studies compared to the numerical investigations. This paper provides a review of the literature of continuum damage-healing and super healing mechanics of brittle materials based on continuum damage and healing mechanics. This review includes various damage-healing models, methodologies, hypotheses and advances in continuum damage and healing mechanics. The anisotropic formulations of damage and healing mechanics are also highlighted. The objective of this paper is also to review the super healing theory based on continuum damage-healing mechanics and its role in material and structure strengthening. Finally, a conclusion of the reviewed damage-healing models is pointed out and future perspectives are given.

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Section: Damage and Healing Configurationsmentioning

confidence: 99%

Section: Damage and Healing Configurationsmentioning

confidence: 99%

Section: Damage-healing Law For Concretementioning

confidence: 99%

Section: Damage-healing Law For Concretementioning

confidence: 99%

mentioning

confidence: 99%

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Continuum Damage-Healing and Super Healing Mechanics in Brittle Materials: A State-of-the-Art Review

Oucif

Mauludin

2018

Applied Sciences

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The simulation of transport processes in cementitious materials with embedded healing systems

Freeman

Jefferson

2019

Num Anal Meth Geomechanics

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A new model for simulating the transport of healing agents in self-healing (SH) cementitious materials is presented. The model is applicable to autonomic SH material systems in which embedded channels, or vascular networks, are used to supply healing agents to damaged zones. The essential numerical components of the model are a crack flow model, based on the Navier-Stokes equations, which is coupled to the mass balance equation for simulating unsaturated matrix flow. The driving forces for the crack flow are the capillary meniscus force and the force derived from an external (or internal) pressure applied to the liquid healing agent. The crack flow model component applies to non-uniform cracks and allows for the dynamic variation of the meniscus contact angle, as well as accounting for inertial terms. Particular attention is paid to the effects of curing on the flow characteristics. In this regard, a kinetic reaction model is presented for simulating the curing of the healing agent and a set of relationships established for representing the variation of rheological properties with the degree of cure. Data obtained in a linked experimental programme of work is employed to justif the hoi e a d fo of the o stituti e elatio ships, as ell as to ali ate the odel s evolution functions. Finally, a series of validation examples are presented that include the analysis of a series of concrete beam specimens with an embedded vascular network. These examples demonstrate the ability of the model to capture the transport behaviour of this type of SH cementitious material system.

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Damage and Nonlinear Super Healing with Application to the Design of New Strengthening Theory

Voyiadjis¹,

Oucif²,

Kattan³

et al. 2020

Handbook of Damage Mechanics

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Modeling of damage-healing and nonlinear self-healing concrete behavior: Application to coupled and uncoupled self-healing mechanisms

Cited by 39 publications

References 63 publications

Continuum Damage-Healing and Super Healing Mechanics in Brittle Materials: A State-of-the-Art Review

Continuum Damage-Healing and Super Healing Mechanics in Brittle Materials: A State-of-the-Art Review

The simulation of transport processes in cementitious materials with embedded healing systems

Damage and Nonlinear Super Healing with Application to the Design of New Strengthening Theory

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