Journal
STRUCTURES
Volume 19, Issue -, Pages 394-410Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.istruc.2019.02.005
Keywords
Fibre reinforced geopolymer concrete; Reinforced concrete beams; Strengthening; Layers; Accelerated corrosion
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Funding
- Iraqi Ministry of Higher Education and Scientific Research-University of Basrah
- Iraqi Cultural Attache in London
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The use of additional Reinforced Concrete (RC) layers or jackets is one of the most commonly used techniques for the strengthening of existing structural elements. A crucial parameter for these applications is the durability and the corrosion resistance of the RC layers. However, to date there are not any published studies on the use of novel cementitious materials for the improvement of the durability of the strengthened elements. In this study, a novel strengthening technique is proposed using additional high performance Fibre Reinforced Geopolymer Concrete (FRGC) layers and jackets reinforced with steel bars. The main goal of this technique is the improvement of the structural performance of the existing elements and at the same time the improvement of the durability and corrosion resistance of the strengthening layers. RC beams strengthened with reinforced FRGC layers were examined under standard and accelerated corrosion conditions. Accelerated corrosion tests were performed using the induced current technique followed by flexural tests. The results indicate superior performance for beams strengthened with FRGC and improved performance of the interface between the additional layer and the initial RC beam.
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