Shear Strengthening of Interior Slab–Column Connections Using Carbon Fiber-Reinforced Polymer Sheets
- 1 May 2003
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Composites for Construction
- Vol. 7 (2) , 145-153
- https://doi.org/10.1061/(asce)1090-0268(2003)7:2(145)
Abstract
This paper presents the results of an experimental investigation undertaken to evaluate the punching shear capacity of interior slab–column connections, strengthened using flexible carbon fiber-reinforced polymer (CFRP) sheets. Sixteen square (670×670mm) slab–column connections with different slab thicknesses (55 and 75 mm) and reinforcement ratios (1 and 1.5%) were tested. Twelve specimens were strengthened using CFRP sheets and the remaining four specimens were kept as controls. Without strengthening, all specimens were designed to experience punching shear failure. The CFRP sheets were bonded to the tension face of the specimens in two perpendicular directions parallel to the internal ordinary steel reinforcement. The test results clearly demonstrate that using CFRP leads to significant improvements in the flexural stiffness, flexural strength, and shear capacity of beam–column connections. Depending on the content of the ordinary reinforcement, thickness of the slab, and area of CFRP sheet, the flexur...Keywords
This publication has 1 reference indexed in Scilit:
- The Shear Strength of Reinforced Concrete Members—SlabsJournal of the Structural Division, 1974