الفهرس 
The Necessity of Strengthening RC ElementsOnly 14 pages are availabe for public view
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Abstract
A recent technique for shear strengthening of reinforced concrete (RC) elements is the embedded through section (ETS). This technique calls for holes to be drilled through the section of the beam, and then steel bars are inserted into these holes, bonded with adhesives or fixed mechanically. This research presents an experimental and analytical study for shear strengthening of reinforced concrete beams. The main objective of the research is to study the different methods for shear strengthening by using the ETS technique (bonded and mechanical) and the use of this technique on beams previously strengthened with CFRP sheets. An experimental program including fourteen test specimens was conducted. The beams were classified into four groups to draw the necessary conclusion for the study parameters (strengthening method for ETS, an inclination of ETS, loading history, CFRP sheets). The effects of selected parameters on the beam shear capacity are presented in the form of cracking, and failure loads comparisons. The analytical results from (Eurocode and ACI code) and the gained shear capacity were compared to those obtained from experiments. For insight on the behavior, a finite element method is used for the analysis by (ANSYS 15.0) of reinforced concrete specimens in conjunction with the experimental work. Based on the above study, recommendations for shear strengthening using ETS and CFRP composites were drawn.