Journal of Engineering Science and Technology Special Issue on RSAEAS, April (2022) 85 - 92 © School of Engineering, Taylor’s University 85 EFFICIENT OF THE PRECAST SIFCON LAMINATES TO ENHANCE THE SHEAR PERFORMANCE OF PRESTRESSED CONTINUOUS CONCRETE BEAM MUSTAFA B. DAWOOD*, HAWRA MOHAMED ALI M. TAHER 1 Civil Engineering Department, College of Engineering, University of Babylon, 51001, Babylon, Iraq *Corresponding Author: [email protected] Abstract Prestressed concrete members' shear behavior and strengthening are difficult to predict because of the material's brittleness and a variety of factors that influence it. The aim is to investigate how alternative pattern strengthening configurations employing SIFCON laminates affect prestressed concrete beam shear behavior. This is our main goal. A variety of SIFCON configurations were used to cast and strengthen four continuous prestressed concrete beams in the maximum shear zone, and the beams were then tested under shear to determine which configuration was the strongest. Two-point loading was used to check all of the beams. One point was loaded in the middle of each span. Prestressed concrete precast SIFCON laminates were found to be more effective in boosting the shear capacity of precast SIFCON laminates for prestressed concrete beams. Shear failure modes were also found to be transformed to flexural ones in certain areas. SIFCON reinforcement of prestressed concrete beams enhanced shear performance considerably, delayed the first crack appearance time of the tested beams; the first crack has reached (26.4%- 105.7%), increasing the ultimate shear strength of (19.3 % -46.5 %) and the improvement in stiffness about (22.4%-99%). Keywords: Continuous beam, Prestress, Shear, SIFCON, Strengthening.
EFFICIENT OF THE PRECAST SIFCON LAMINATES TO ENHANCE THE SHEAR PERFORMANCE OF PRESTRESSED CONTINUOUS CONCRETE BEAM
May 19, 2023
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