MATEC Web Conf.
Volume 364, 2022International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2022)
|Number of page(s)
|Condition Assessment of Concrete Structures - Degradation and Condition Assessment
|30 September 2022
Condition assessment of two prestressed concrete slabs after 60 years in service
Department of Civil Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
* Corresponding author: firstname.lastname@example.org
Two concrete deck slabs extracted from a Canadian bridge have been evaluated using non-destructive testing (NDT), followed by destructive testing. Throughout its service life, the bridge experienced harsh environmental conditions with frequent freeze-thaw cycles, hot and humid summers, and the use of de-icing salts during winters. This study presents the preliminary results of an exhaustive condition assessment of two prestressed concrete slab panels, where NDT techniques (visual assessments, electrochemical and concrete soundness tests) have been conducted prior to destructive testing. Although visual inspection did not indicate poor concrete quality, the results of the ultrasonic pulse velocity testing showed that both concrete slabs are of poor quality and may be suffering from internal defects. Chlorides may have also been introduced through the strand conduit anchor points. These findings raise concerns regarding the structural integrity of corrosion-affected members.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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