Browsing by Author "Anas Akhtar"

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    Experimental study of strengthening of reinforced concrete beams through steel sheets
    (UMT.Lahore, 2020) Ameer Hamza; Anas Akhtar; Noman Riaz; Jahandad Khan
    In comparison with the option of “flatten and rebuild buildings”, durability can be better achieved by extending the life spans of existing structures. Strengthening of structures results in less construction waste materials, reserves natural resources, minimizes adverse environmental effects, saves time, saves cost, etc. The structural behavior of reinforced concrete beams strengthened steel sheets has been determined in the undertaken research both theoretical and experimental. The main aim of our project is to highlights the best among the investigated strengthening techniques. The experimental work included complete research plan consists of 6 concrete cylinders and 9 concrete beams. Making concrete (6 concrete cylinders, 2 for each strength & 6 beams 2 of each strength, 3 for control sample 3 for steel sheet sample) with different strength properties (strength range 18MPa, 21MPa and 25 MPa).to have inadequate flexural capacity and the purpose is to increase it. Strengthening operation has been accomplished using concrete steel sheets with different configurations. The test variables included the type of strengthening flexural the technique of strengthening. As predicted, the strengthened beams exhibited different structural behavior upon loading up to failure. The beams strengthened with epoxy bonded steel sheets showed best structural behavior. Steel sheets bonded at the bottom of the beam can prevent the shear failure and recover flexural capacity while continuous steel plates bonded to bottom sides of the beam only delay the shear failure with increasing in flexural capacity. In conclusion, strengthening of Steel sheet beams can be effectively increase by 22% to the control beams achieved using practical techniques, which will increase the life spans of the beams and thus enhance the durability of existing structure. Keywords: