To main content

25 years of field exposure of pre-cracked concrete beams; combined impact of spacers and cracks on reinforcement corrosion

Abstract

The state of corrosion of three pre-cracked concrete beams was investigated after 25 years of marine exposure (atmospheric, tidal and submerged). The influence of inadequate plastic spacers was found to overrule the possible impact of bending cracks on reinforcement corrosion. Increased chloride ingress was detected in cracked areas, but very little corrosion was observed where cracks reached the reinforcement. Also, high chloride content was measured in uncracked parts of the beams, but no or very limited corrosion was observed outside spacers and a few cracks. It is hypothesised that corrosion, initiated early at weak spots (here at plastic spacers) can protect the remaining reinforcement from corrosion
Read the publication

Category

Academic article

Language

English

Author(s)

Affiliation

  • SINTEF Community / Architecture, Materials and Structures
  • Technical University of Denmark
  • Lund University
  • Norwegian University of Science and Technology
  • Norwegian public roads administration

Year

2021

Published in

Construction and Building Materials

ISSN

0950-0618

Volume

286

View this publication at Norwegian Research Information Repository