Mechanical Properties of 30 Year-Old Naturally Corroded Steel Reinforcing Bars
Artikel i vetenskaplig tidskrift, 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.

pit characterization

necking

reinforced concrete

corrosion

tensile behaviour

3D-scanning

Författare

Ignasi Fernandez

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Carlos Gil Berrocal

Thomas Concrete Group AB

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

International Journal of Concrete Structures and Materials

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

Vol. 13 1 9

Ämneskategorier

Teknisk mekanik

Annan materialteknik

Kompositmaterial och -teknik

DOI

10.1186/s40069-018-0308-x

Mer information

Senast uppdaterat

2019-10-29