Mechanical Properties of 30 Year-Old Naturally Corroded Steel Reinforcing Bars
Journal article, 2019

The present paper investigates the mechanical response of more than 120 corroded reinforcing bars extracted from a real bridge after 30 years in service. Corrosion was quantified using gravimetric and 3D-laser scanning measurements. An expression to relate the average and critical corrosion levels was found, the latter being the main parameter governing the capacity of corroded bars. Whereas the strength of the material was not affected by corrosion, the ultimate strain decreased sharply. However, strains were not only affected by cross-sectional reduction but also by the shape of the critical pit and necking at failure.

corrosion

pit characterization

necking

3D-scanning

reinforced concrete

tensile behaviour

Author

Ignasi Fernandez

Chalmers, Architecture and Civil Engineering, Structural Engineering

Carlos Gil Berrocal

Chalmers, Architecture and Civil Engineering, Structural Engineering

Thomas Concrete Group

International Journal of Concrete Structures and Materials

1976-0485 (ISSN) 2234-1315 (eISSN)

Vol. 13 1 9

Subject Categories

Applied Mechanics

Other Materials Engineering

Composite Science and Engineering

DOI

10.1186/s40069-018-0308-x

More information

Latest update

5/25/2020