Chloride diffusivity in saturated cement paste subjected to external mechanical loadings

Du, Xiuli; Jin, Liu; Zhang, Renbo

doi:10.1016/j.oceaneng.2014.11.028

Cited by 63 publications

(47 citation statements)

References 38 publications

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“…In light of this, the influence of external mechanical loads on chloride diffusivity in concrete could be equivalent as the effect of the porosity variation on chloride diffusivity in concrete. This comment is accordance with those in the work [12,24].…”

Section: Multi-scale Analytical Methodssupporting

confidence: 93%

“…1(b) was used. (3) In the third step, the quantitative relation between the current porosity (micro-scale) of cement paste and the ITZ and the corresponding volumetric strain will be obtained first based on the previous work [24], and the quantitative relation between the current chloride diffusion coefficient of each component (meso-scale) and the current porosity will be addressed. That is to say, the diffusivity of meso-components within concrete will be determined in this step.…”

Section: Multi-scale Analytical Methodsmentioning

confidence: 99%

“…Among these parameters, the porosity is often regarded as the primary parameter that affects the mechanical and transport performances of porous cement-based materials [5,7,24], and the others have less influences. Consequently, in this work the porosity is chosen as an independent variable to relate to the chloride diffusivity of heterogeneous concrete.…”

Section: Micro-structure Of Concretementioning

confidence: 99%

“…Herein, the total volumetric strain e total v of concrete was utilized to characterize the external mechanical loads. In the classic theory of composites, the composite spheres assemblage (CSA) model has been widely utilized to predict the effective mechanical and transport properties of composite materials, e.g., in the publications [5,7,17,24]. A typical three-phase sphere model for concrete at the meso-scale was established, in which the concrete was regarded to be composed of aggregate, the ITZ and the cement paste matrix, as shown in Fig.…”

Section: The Volumetric Strains Of the Meso-componentsmentioning

confidence: 99%

See 3 more Smart Citations

Multi-scale analytical theory of the diffusivity of concrete subjected to mechanical stress

Jin

Zhang

et al. 2015

Construction and Building Materials

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Section: Multi-scale Analytical Methodssupporting

confidence: 93%

Section: Multi-scale Analytical Methodsmentioning

confidence: 99%

Section: Micro-structure Of Concretementioning

confidence: 99%

Section: The Volumetric Strains Of the Meso-componentsmentioning

confidence: 99%

See 2 more Smart Citations

Multi-scale analytical theory of the diffusivity of concrete subjected to mechanical stress

Jin

Zhang

et al. 2015

Construction and Building Materials

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“…only the diffusion field was numerically simulated for a solid with an artificial pre-defined crack geometry. These studies investigated the influence of various parameters, such as crack position, width, density and depth, see [33,[53][54][55]. In these models, rectangular cracks were commonly considered in the simulations, since they are easily generated in conventional experiments.…”

Section: State Of the Art On The Effect Of Cracking On Diffusion In Cmentioning

confidence: 99%

A phase-field approach to fracture coupled with diffusion

Lorenzis

2016

Computer Methods in Applied Mechanics and Engineering

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Influence of compressive stress on chloride transport in the interfacial zone of precast and cast‐in‐place concrete

Zhao

Luo

2020

Structural Concrete

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The large number of interfacial zones of precast and cast-in-place concrete weakens the durability and resistance to chloride penetration of fabricated structures. This study investigated the chloride transport behavior in the interfacial zone of precast and cast-in-place concrete through long-term wet-dry cycle experiments. The two influencing factors of compressive stress and distance to the interface were investigated. A chloride concentration test was conducted to investigate the chloride distribution profile, the chloride diffusion coefficient D app , and the surface chloride concentration C s,Δx . The values of D app and C s,Δx correlated with both the location in the interfacial zone and compressive stress, and both dependencies showed complex interactions. All specimens showed different degrees of this interfacial zone effect, which was weakened by compressive stress. Based on the test results, empirical models were developed (by regression) to quantify the dependences of D app and C s,Δx to both compressive stress level and distance to the interface. Applicability of the models was verified.

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Chloride diffusivity in saturated cement paste subjected to external mechanical loadings

Cited by 63 publications

References 38 publications

Multi-scale analytical theory of the diffusivity of concrete subjected to mechanical stress

Multi-scale analytical theory of the diffusivity of concrete subjected to mechanical stress

A phase-field approach to fracture coupled with diffusion

Influence of compressive stress on chloride transport in the interfacial zone of precast and cast‐in‐place concrete

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