Load-displacement assessment of one-way reinforced concrete (RC) slabs externally strengthened using CFRP strips under blast loads

Rodrigo Mourão, Azer Maazoun, Filipe Teixeira-Dias, John Vantomme, David Lecompte

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

Abstract

Dynamic behaviour of Reinforced Concrete (RC) structures can be assessed using a Single-Degree-of-Freedom (SDOF) approach. Such a method is highly dependent on the resistance curve of the structure which is generally represented by a bilinear elasto-perfectly-plastic approximation. This approximation might lead to erroneous results when it refers to the use of externally bonded Fibre Reinforced composites for flexural capacity upgrade of Reinforced Concrete (RC), mainly when the concrete-to-FRP interface failure is to be included. One-way slabs are experimentally and numerically investigated in this study in a 3-point flexural configuration. Assessment on the load-displacement behaviour of a reference specimen and its retrofitted counterpart is performed. Special attention is given to the behaviour of the structure after the concrete-to-FRP failure. Comparison is made between experimental, numerical and analytical results and a good agreement is obtained. A complementary analytical study based on the SDOF method is conducted to understand the influence of several resistance curves on the overall displacement of the same structure when subjected to different pressure-impulse combinations.
Original languageEnglish
Title of host publicationProceedings of the 18th International Conference on Experimental Mechanics
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
DOIs
Publication statusPublished - 12 Jul 2018
Event18th International Conference on Experimental Mechanics - Brussels, Brussels, Belgium
Duration: 1 Jul 20185 Jul 2018
Conference number: 18
http://www.icem18.org

Conference

Conference18th International Conference on Experimental Mechanics
Abbreviated titleICEM
Country/TerritoryBelgium
CityBrussels
Period1/07/185/07/18
Internet address

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