Open this publication in new window or tab >>Show others...
2022 (English)In: IABSE Symposium Prague, 2022: Challenges for Existing and Oncoming Structures, Report, International Association for Bridge and Structural Engineering, 2022, p. 437-444, article id O-048Conference paper, Published paper (Refereed)
Abstract [en]
As reinforced concrete structures reach the end of their design lives, technology for improving accuracy and efficiency of inspections and structural health monitoring rapidly progresses. Concrete cracking and reinforcement strains are two relevant parameters in assessing damage and safety ofthese structures. The use of Digital Image Correlation (DIC) systems and distributed Fibre Optic Sensors (FOS) to evaluate these parameters are two of the technologies that have been gaining momentum due to their advantages over other approaches. This study presents an experimental investigation of crack propagation of a reinforced concrete beam specimen through FOS and DIC.The FOS were positioned inside a groove carved in the rebar and in the concrete immediately outside the bar for comparison. The results showed a significant difference between both positions, with more reliable data coming from inside the bar. The addition of the DIC crack propagation images to the FOS analysis complemented the results, and good visual correlation was identified between both methods. This study is part of a broader research program, which aims at applying DIC and FOS for structural health monitoring of a real scale bridge structure.
Place, publisher, year, edition, pages
International Association for Bridge and Structural Engineering, 2022
Keywords
reinforced concrete, Fibre Optic Sensors, Digital Image Correlation, crack propagation
National Category
Construction Management
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-90818 (URN)2-s2.0-85133555444 (Scopus ID)
Conference
IABSE Symposium Prague 2022 - Challenges for Existing and Oncoming Structures (CEOS), Prague, Czech Republic, May 25-27, 2022
Funder
VinnovaSwedish Research Council FormasSwedish Energy AgencySvenska Byggbranschens Utvecklingsfond (SBUF)
Note
Funder: Skanska Sweden;
ISBN for host publication: 978-3-85748-181-9
2022-05-312022-05-312023-09-04Bibliographically approved