Materials and Structures

, Volume 47, Issue 4, pp 729–748 | Cite as

Influence of temporal resolution and processing of exposure data on modeling of chloride ingress and reinforcement corrosion in concrete

  • Madeleine Flint
  • Alexander Michel
  • Sarah L. Billington
  • Mette R. Geiker
Original Article

Abstract

The impacts of temporal resolution and processing of exposure data on the long-term chloride ingress and reinforcement corrosion in concrete were studied. Exposure data from one simulated and two real climates was processed to create boundary conditions for a one-dimensional geometry studied using a numerical heat and mass transport model that includes full coupling of heat, moisture and ion transport. Heat, moisture, and chloride concentration distributions were passed to a simplified reinforcement corrosion initiation and propagation model. The numerical study indicates that processing and temporal resolution of the exposure data has a considerable impact on long-term hygrothermal distribution, chloride ingress, and reinforcement section loss results. Use of time-averaged exposure data in the heat and mass transport model reduces the rate of chloride ingress in concrete and affects prediction of reinforcement corrosion initiation and propagation. Randomly sampled exposure data at daily, weekly, or monthly resolution yields prediction of reinforcement corrosion initiation and propagation closer to original resolution results than time-averaged exposure data.

Keywords

Numerical model Exposure data Hygrothermal Concrete Chloride-induced corrosion 

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Copyright information

© RILEM 2013

Authors and Affiliations

  • Madeleine Flint
    • 1
    • 3
  • Alexander Michel
    • 2
    • 3
  • Sarah L. Billington
    • 1
  • Mette R. Geiker
    • 3
  1. 1.Department of Civil and Environmental EngineeringStanford UniversityStanfordUSA
  2. 2.Department of Civil EngineeringTechnical University of DenmarkKgs. LyngbyDenmark
  3. 3.Department of Structural EngineeringNorwegian University of Science and TechnologyTrondheimNorway

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