Remaining structural capacity of concrete beams with localized corrosion of the embedded reinforcing steel

Authors

  • A. A. Torres-Acosta Instituto Mexicano del Transporte, México
  • M. Martínez-Madrid Instituto Mexicano del Transporte, México
  • A. Muñoz-Noval Universidad Marista de Querétaro

DOI:

https://doi.org/10.3989/mc.2003.v53.i271-272.297

Keywords:

cracking, flexure load capacity, reinforced concrete, accelerated corrosion, concrete durability

Abstract


This work presents an experimental investigation which correlates the flexure load capacity loss of reinforced concrete beams with the amount of steel cross section loss due to localized corrosion of the embedded steel. Concrete beams (100x150x1500 mm) with the central portion contaminated by chlorides, placed during mixing of the concrete, were used in this investigation. By applying a 200 µA/cm2 constant anodic current for approximately 48 to 183 days, further acceleration of the corrosion process was achieved. After the corrosion-acceleration period was over, the specimens were tested in flexure under three-point loading. In addition, the average corrosion penetration, χAVER* estimated for each corroded beam from gravimetric metal loss. The results obtained show a decrease as high as 20% in the flexure load capacity values from the localized corroded specimens with only 14% of re bar radius loss.

Downloads

Download data is not yet available.

Downloads

Published

2003-12-30

How to Cite

Torres-Acosta, A. A., Martínez-Madrid, M., & Muñoz-Noval, A. (2003). Remaining structural capacity of concrete beams with localized corrosion of the embedded reinforcing steel. Materiales De Construcción, 53(271-272), 125–134. https://doi.org/10.3989/mc.2003.v53.i271-272.297

Issue

Section

Research Articles