Bond of reinforcing bars in steel fiber reinforced concrete

摘要

Pull-out tests were performed on 10 mm diameter ribbed bars embedded along three times the bar diameter in 200 mm cubes made of plain and steel fiber reinforced self-compacting concrete (SFRC) of normal strength (B45). The fiber content was 60 and 120 kg/m~3 the aspect ratio of the fibers (i.e. l_f/d_f) was 45 and 80 and the concrete cover was 15,25,35 and 9 mm. The experimentally observed bond stress-slip relationship was compared with the bond stress-slip relationship calculated with the analytical bond model of Den Uijl & Bigaj, which was modified for SFRC.