Effect of crack opening on the local diffusion of chloride in cracked mortar samples

Ismail, Mohammad; Toumi, Ahmed; François, Raoul; Gagné, Richard

doi:10.1016/j.cemconres.2008.03.009

Cited by 188 publications

(72 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In turn, cracking modifies the mass transport by creating continuous pathways that facilitate the penetration of aggressive ions [7], thus leading to a strongly coupled process. Such effect, experimentally observed in [8,9], is amplified by the external loads.…”

Section: Introductionmentioning

confidence: 94%

Towards multiscale modeling of the interaction between transport and fracture in concrete

2016

View full text Add to dashboard Cite

Transport, fracture and their interaction in concrete are complex phenomena of great practical relevance for the durability of civil engineering structures. Due to the heterogeneous nature of the materials, encompassing a wide range of length scales, multiscale approaches are essential. In this paper, we outline some recent research results and open issues in this field. First, we present a microscale model which aims at simulating chloride diffusion and binding in cement. Then, we outline a mesoscale model addressing coupling between cracking and diffusion. Finally, we discuss open issues in the acquisition of the mesoscale geometry from X-ray computed tomography techniques.

show abstract

Section: Introductionmentioning

confidence: 94%

Towards multiscale modeling of the interaction between transport and fracture in concrete

2016

View full text Add to dashboard Cite

show abstract

“…Diffusion coefficients and drying rates were shown to increase by a pproximately 5 0% in these conditions. However, recent results of chloride ingress in cracked samples [23] showed that for macrocracks (> ≈100m), chloride diffuses at a velocity corresponding to its freewater value, which represents approximately a 50-fold increase in diffusion properties.…”

Section: Srns-sti-2008-00050 Revision 0 August 19 2008mentioning

confidence: 99%

Evaluation of Sulfate Attack on Saltstone Vault Concrete and Saltstonesimco Technologies, Inc. Part1 Final Report

Langton¹

2008

View full text Add to dashboard Cite

“…In ( [12]), the authors integrate the diffusion coefficient through the crack obtained in ( [6]) in their numerical model of diffusion based on the FE method. Then they compare their numerical results with the experimental ones of ( [10]). Note that in ( [12]), only artificial cracks are considered (no mechanical simulations are performed).…”

Section: Introductionmentioning

confidence: 99%

Meso-macro modelling of crack-induced diffusivity in heterogeneous materials

Benkemoun

Amiri²

2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

View full text Add to dashboard Cite

Abstract. This paper presents a meso-macro numerical approach for the determination of macroscopic diffusivity tensors in heterogeneous materials such as concrete. These macroscopic tensors account for important features of heterogeneous materials: (1) cracking process (evolution from diffuse cracks in the bulk to localized macro-crack), (2) tortuosity and connectivity of the crack, (3) induced-anisotropy and (4) presence of aggregates. We present numerical examples in the context of concrete-like materials. We show how the crack pattern and the presence of aggregates induce the anisotropy of the macroscopic diffusivity tensor.

show abstract

Effect of crack opening on the local diffusion of chloride in cracked mortar samples

Cited by 188 publications

References 4 publications

Towards multiscale modeling of the interaction between transport and fracture in concrete

Towards multiscale modeling of the interaction between transport and fracture in concrete

Evaluation of Sulfate Attack on Saltstone Vault Concrete and Saltstonesimco Technologies, Inc. Part1 Final Report

Meso-macro modelling of crack-induced diffusivity in heterogeneous materials

Contact Info

Product

Resources

About