الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Nowadays, Strain Hardening Cementitious Composites (SHCC) has been considered a promising composite to be used in wide areas of engineering applications. Reinforced concrete (RC) haunched beams in the effective shear span were strengthened using precast SHCC plates. In this study, the used precast SHCC plates were used to be easily applied within the concrete cover with a constant thickness of 20 mm. The fourteen RC beams (one prismatic and thirteen haunched) in the experimental work were used to estimate a further understanding of the shear behavior of RC haunched beams strengthened using precast SHCC plates. six specimens were kept un-strengthened to be used as a reference and to study the effect of changing the haunch angle. eight specimens were strengthened in critical shear span using precast SHCC plates. Six variables were investigated in this study for specimens: the angle inclination of haunched beam and the effect of shear reinforcement Besides, the angle inclination of SHCC plates, the spacing between SHCC plates and the effect of plate configuration. In addition, the effect of Strengthening using SHCC plates with and without shear reinforcement. The load-carrying capacity was improved by using precast SHCC plates, according to experimental data. The increase in ultimate load was up to 144% over the control beam. Furthermore, using reinforced plates by wire mesh steel had a significantly effect on both cracking evolution and energy absorption of the strengthened haunched beams. Finally, the analytical model was used to assess the shear capacity of the haunched beams considering the influence of the precast SHCC plates.