Ground penetrating radar as a monitoring tool: Mapping internal features with attribute analysis

I. Morris, H. Abdel-Jaber, Branko Glisic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In reinforced concrete structures, including those instrumented with embedded sensor networks, severe structural problems often begin as minor issues or maintenance oversights. Unusual behaviors like corrosion or cracking can be detected with embedded sensors as deviation from a reference state of the structure, but verifying the actual cause of the deviation, i.e. localization and characterization, is often limited to targeted nondestructive investigations. Ground penetrating radar (GPR), for example, has been used to investigate defects in structures and can be a powerful tool to compare the physically constructed details of the structure to construction documents. In this work, a post-tensioned concrete pedestrian bridge instrumented with embedded fiber optic sensors was investigated (1) to locate and map continuous internal features of the bridge deck and (2) quantify the differences between the concrete used in each of two construction phases. To this end, a survey of the main span and one of four approaches of Streicker Bridge was conducted using a 2.6 GHz GPR antenna. Analysis of the data using standard processing and filtering techniques was complemented by attribute analysis for improved mapping of features, focusing on the post-tension tendons, embedded air voids, and connections between elements. These results indicate the value of combining nondestructive investigation with SHM sensing approaches for verification of anomalies and understanding of the as-built condition of a structure, as well as providing details for continued SHM of the structure.

Original languageEnglish (US)
Title of host publicationSHMII 2017 - 8th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Proceedings
EditorsSaeed Mahini, Tommy Chan
PublisherInternational Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII
Pages686-693
Number of pages8
ISBN (Electronic)9781925553055
StatePublished - Jan 1 2017
Event8th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2017 - Brisbane, Australia
Duration: Dec 5 2017Dec 8 2017

Publication series

NameSHMII 2017 - 8th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Proceedings

Other

Other8th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2017
CountryAustralia
CityBrisbane
Period12/5/1712/8/17

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Building and Construction
  • Civil and Structural Engineering

Fingerprint Dive into the research topics of 'Ground penetrating radar as a monitoring tool: Mapping internal features with attribute analysis'. Together they form a unique fingerprint.

  • Cite this

    Morris, I., Abdel-Jaber, H., & Glisic, B. (2017). Ground penetrating radar as a monitoring tool: Mapping internal features with attribute analysis. In S. Mahini, & T. Chan (Eds.), SHMII 2017 - 8th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Proceedings (pp. 686-693). (SHMII 2017 - 8th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Proceedings). International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII.