New semiempirical temporal model to predict chloride profiles considering convection and diffusion zones

Reichert, Thiago Alessi; Pansera, Wagner Alessandro; Balestra, Carlos Eduardo Tino; Medeiros-Junior, Ronaldo A.

doi:10.1016/j.conbuildmat.2022.130284

Cited by 4 publications

(1 citation statement)

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“…Although available literature is scarce, this has been modeled for the socalled skin effect at the concrete surface. 6,7 The models of Andrade et al and Reichert et al 6,7 assume that there are no chlorides present at the start of the diffusion process. However, in practical situations, when a repair mortar is applied, chlorides have likely already penetrated the concrete.…”

Section: Introductionmentioning

confidence: 99%

Modeling and probabilistic evaluation of repair strategies in the initiation phase of chloride‐induced corrosion of the reinforcement of concrete structures

Van Den Hende,

Helderweirt,

Botte

et al. 2024

Structural Concrete

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Chloride ingress is a common issue in concrete structures that can result in reinforcement corrosion. In order to extend the lifetime of a structure, several preventive repair methodologies are available, which reduce the ingress of chlorides. In this work, the computational efficiency of the analytical model for a two‐material diffusion problem has been improved to model the effect of a mortar overlay or partial cover replacement, and is further implemented to model the influence of a coating. This enables the assessment of each repair method in a probabilistic framework using Latin hypercube samples within an acceptable timeframe. A parameter study executed in both a deterministic and probabilistic framework demonstrated the model efficiency and the importance of the timing and quality of the intervention for successful repair when applying a repair intervention in the initiation phase.

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