Strengthening of Reinforced Concrete Slab by Concrete Overlay

Authors

1 Department of Civil Engineering Faculty of Engineering, Thammasat University, 12120 THAILAND

2 Department of Civil EngineeringŁˆ Thammasat University

3 Department of Civil Engineering, Faculty of Engineering, Thammasat University, Thailand

4 Department of Civil Engineering, Faculty of Engineering and Architecture, Rajamagala University of Technology Rattanakosin Wang Klai Kang Won Campus, Prachaup Kiri Kan, Thailand

Abstract

This experimented work was used to learn flexural behaviors of reinforced concrete slabs strengthened by concrete overlay under static loading. Principal parameters included the thickness of concrete overlay and contact surface between slab and concrete overlay, with and without shear connector. The experimental results reveal that flexural stiffness and ultimate moment capacity of the slab with concrete overlay can be significantly improved above control specimen for all types of contact surface. Ductility of strengthening slab with shear connector is greater than that of the overlaid slab without shear connector. Also, it can observe brittle shear failure and debonding of contact surface due to high shear flow of the overlaid slab without shear connector and thick overlay concrete. This should be taken into account in the design consideration

Keywords

References

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MANZAR, the Scientific Journal of landscape
Volume 10, Issue 44
October 2018
Pages 60-67

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