Abstract
Reinforced-concrete (RC) structures are the most used in the world. The concrete is an economical and durable material resistant, insulating and easy to implement. The main causes of deterioration of structures are: mechanical damage, chemical attack (carbonatation), physical deterioration, corrosion, evil design, overloading and improper repairs. All these damage can give rise to rebuild or to repair structures by various methods. This paper presents the repair of reinforced-concrete corbel by bonded carbon fibre fabrics. Seven RC corbels were tested. Two of them are reference RC corbels, one without strengthening and the other one strengthened RC corbel. They were tested under static loading. The other three specimens were damaged at different levels 40, 60 and 80 % of the ultimate load of reference corbel, afterward they are strengthened by wrapping. Finally, the last two RC corbels were tested under dynamic loading, one without reinforcement and last one after strengthening. The ultimate loads are usefully compared and the mechanical behaviour using strain gauges are investigated. The results show that strengthening improves significantly the ultimate capacity load up to 82 %, as well as the increased structure stiffness to third. The different failures modes are described.
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Ivanova, I., Assih, J., Dontchev, D. (2016). Mechanical Pathologies of Reinforced and Damaged Concrete Corbels by Gluing Composite Carbon Fabrics Under Static and Dynamic Tests. In: Delgado, J. (eds) Sustainable Construction. Building Pathology and Rehabilitation, vol 8. Springer, Singapore. https://doi.org/10.1007/978-981-10-0651-7_9
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DOI: https://doi.org/10.1007/978-981-10-0651-7_9
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