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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