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Effect of Jacket Thickness and Fiber Content on Repaired RC Beams with Fiber-Reinforced Concrete Jackets

Research Authors
Amr E. M. Abdallah, Yehia A. Hassanean, Mohammed M. Ahmed, Kamal Abas Assaf
Research Department
Research Year
2017
Research Journal
International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET)
Research Publisher
International Conference on Science Technology and Management (ICSTM)
Research Vol
NULL
Research Rank
3
Research_Pages
NULL
Research Website
NULL
Research Abstract

Five reinforced concrete beams with rectangular cross section 120 x 300 mm and flexural reinforcement ratio of 0.0124 were cast and tested under three-point static loading. One beam was tested up to failure as control beam. The rest of the beams were loaded up to the inclined cracking load. Then the load was removed and the beams were repaired using steel fiber-reinforced self-consolidating concrete (SFRSCC) jacket with varied thicknesses and fiber contents. Then the repaired were retested up to failure. The fiber contents of 0.5, 0.75 and 0.75% by the volume of concrete as well as jacket thicknesses of 30 and 50 mm were considered for this study. The experimental results showed that the proposed technique enhanced the load capacity of the repaired beams by up to 121% with respect to the original specimen, and reduced the induced deflections and strains at the different stages of loading. Moreover, increasing fiber content with a fixed jacket thickness was found to be more effective than increasing the jacket thickness with the same fiber content.