Discussion of 'Punching Shear Strengthening of Reinforced Concrete Flat Plates Using Carbon Fiber Reinforced Polymers' by Baris Binici and Oguzhan Bayrak

摘要

The discussers would like to extend their appreciation to the authors for presenting their work on the use of FRP for strengthening two-way slabs in shear. This discussion is written to bring to notice the work that was earned out on this topic at the University of Toronto between 1999 and 2002 (Sissakis 2000, 2002) and has not been referred to in the paper. In a pilot test series, three slab specimens retrofitted with CFRP were tested and compared with a control specimen (Sissakis 2000) in an effort to validate the concept of stitching the slabs with FRP to enhance their punching shear capacity. All the slab specimens were 1500X1500 mm (59 X 59 in.) in plan and 150 mm thick (5.9 in.), and tested under displacement-controlled concentric load applied at the center of the specimen on an area of 200 X 200 m (7.9X7.9 in.). Fig. 1 shows the details of the specimen and the test machine with a specimen simply supported on all four sides. The test setup and the specimen details used by Binici and Bayrak (Fig. 1) are similar to those shown in Fig. 1 here.