Efficacy Of Strengthening R.C. Beams to resist Shear


Abstract in English

Beams are considered as one of the most loaded concrete elements, which needs to be strengthened either as a result of insufficient of concrete section, or insufficient rebar or increased loads, or the result of a superficial steel or corrosion of internal steel reinforcement, and other reasons that we will mention them what we need to study this. The damaged structural elements and their inability to function fully as a result of exposure to different environmental factors damage materials and lead to lower resistance, or because of the existence of of an executive defects or inappropriate investment for its, leads to the need to rehabilitate maintenance and repair or reinforcement. So it was resorting to strengthen either magnify sections or supply necessary reinforcement or steel platelets linking external supported well to concrete section, and because of the difficulty of execution the recent studies has been implemented on the use of more efficient material which is concentrated fiber reinforced polymers. We will present here to methods of strengthening the shear up to the global studies conducted using these materials from polymers, which are characterized by high resistance to tensile and large resistance to environmental factors and weather conditions and ease of application in the specified permissible sites.

References used

ACI 318M-02,"BUILDING CODE REQUIREMENTS FOR STRUCTURAL CONCRETE (ACI 318M-02),AND COMMENTARY (ACI 318RM-02)",2003
ACI 440.1R-01, Emerging Technology Series, "Guide for the Design and Construction of Concrete Reinforced with FRP Bars", 2003
J.A.O. BARROS , S.J.E. DIAS , " Near surface mounted CFRP laminates for shear strengthening of concrete beams" , Cement and Concrete Composites Volume 28, Issue 3, March 2006, Pages 276 -292

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