Using non-destructive testing methods for locating the steel reinforcement in reinforced concrete structures

Fahim Al-Neshawy, Abobaker Ba Ragaa, Jari Puttonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Concrete cover for reinforcement steel is required to protect the steel rebar against corrosion and to provide resistance against fire. Determining the precise location, cover depth, and diameter of concrete reinforcement in existing structures can be rather difficult. Especially in densely reinforced elements, where there are several layers of reinforcement. The most common non-destructive methods for locating reinforcement are the electromagnetic cover meters and the ground penetrating radars (GPR) methods. This paper describes the possibilities of non-destructive determination of the location and depth of reinforcement in concrete structures using electromagnetic ProfoScope cover meter and GPR. The paper describes the use of the two methods for in-situ measurement of a steel-reinforced thick-walled concrete mock-up, presents the results of measurements of cover depth and the location of the reinforcement, and discusses the strong and weak points of the two methods. The results indicate that the cover meter is suitable for measuring the concrete cover depth while the GPR is very good in identifying and locating the rebar position in reinforced concrete structures.
Original languageEnglish
Title of host publicationProceedings of the International Conference on Non-destructive Evaluation of Concrete in Nuclear Applications - NDE NucCon 2023
PublisherAalto-yliopisto
Pages335-344
Number of pages10
ISBN (Electronic)978-952-64-1140-8
Publication statusPublished - 2023
MoE publication typeNot Eligible
EventInternational Conference on Non-destructive Evaluation of Concrete in Nuclear Applications - Espoo, Finland
Duration: 25 Jan 202327 Jan 2023

Publication series

NameAalto University publication series SCIENCE + TECHNOLOGY
Number3
Volume2023
ISSN (Electronic)1799-490X

Conference

ConferenceInternational Conference on Non-destructive Evaluation of Concrete in Nuclear Applications
Abbreviated titleNDE NucCon
Country/TerritoryFinland
CityEspoo
Period25/01/202327/01/2023

Keywords

  • reinforced concrete
  • mock-up
  • cover meter
  • GPR
  • Non-Destructive Testing

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