Structural Integrity of RC Columns Retrofitted with FRP Wraps
Matching Research Agency
|Missouri Department of Transportation (MoDOT)|
|Abdeldjelil Belarbi, Associate Professor|
University of Missouri-Rolla
Rolla, MO 65409
|Two (2) M.S. students|
|To study the durability performance and structural integrity of RC columns retrofitted with FRP jackets and subjected to harsh environmental conditioning.|
|It is well known that properly designed FRP jackets can improve not only column strength in compression, flexure and shear, but also its ductility, so vital for resistance to ground motion during earthquake. However, before the full advantages of these techniques can be realized, modes of failure and environmental durability of the strengthened structures must be understood. The structural integrity monitoring of reinforced concrete (RC) columns confined with FRP wraps is the focus of the proposed research. The research will address on the following areas: (i) fabrication of FRP wrapped RC columns with integrated sensors; (ii) testing under compression loadings following different environmental conditions (temperature, moisture and salt spray, and ultraviolet rays); (iii) finite element modeling; and (iv) signal processing. The proposed strengthening and health monitoring approach, if successful, will lead to an economical and effective rehabilitation of RC columns. This will allow building on existing knowledge and further international cooperation.|
- Understand modes of failure and environmental durability of strengthened structures.
- Monitor structural integrity.
- Report results.
|Improve existing design guidelines for bridge pier strengthening using FRP jackets, to include the durability factor and long-term exposure to environmental conditions.|
|Project Start Date:||05/01/2000|
|Project End Date:||08/31/2001|
Relationship to other Research/Projects
|The study of RC columns retrofitted with FRP composites is one of the many ongoing research projects carried by the investigator and his team under the Center for Infrastructures Engineering Studies (CIES).|
Technology Transfer Activities
|Findings will be published in structural, construction and FRP-related journals and will be also disseminated through seminars and workshops organized by UMR centers.|
Transportation Research Board Keywords
|FRP jackets, structural integrity and compression loadings|