Estimation of elastic modulus of reinforcement corrosion products using inverse analysis of digital image correlation measurements for input in corrosion-induced cracking model

Bradley Justin Pease, Alexander Michel, Anna Emilie A. Thybo, Henrik Stang

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    A combined experimental and numerical approach for estimating the elastic modulus of reinforcement corrosion products is presented. Deformations between steel and mortar were measured using digital image correlation during accelerated corrosion testing at 100 μA/cm2 (~1.16 mm/year). Measured deformations were compared to a numerical corrosion model that considers electrochemical, transport, and mechanical processes, including penetration of corrosion products into a ‘corrosion-accommodating region,’ provided by the mortar’s capillary porosity, directly surrounding the steel. Comparing model and experimental results provides an order-of-magnitude approximation of corrosion product stiffness of 2.0 GPa.
    Original languageEnglish
    Title of host publicationProceedings of the 6th International Conference on Bridge Maintenance, Safety and Management
    Publication date2012
    Publication statusPublished - 2012
    Event6th International Conference on Bridge Maintenance, Safety and Management - Stresa, Lake Maggiore, Italy
    Duration: 8 Jul 201212 Jul 2012
    Conference number: 6
    http://www.iabmas2012.org/

    Conference

    Conference6th International Conference on Bridge Maintenance, Safety and Management
    Number6
    Country/TerritoryItaly
    CityStresa, Lake Maggiore
    Period08/07/201212/07/2012
    Internet address

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