Table 3: Parameters for mean bond stress-slip model proposed by CEB-FIP Model Code [15].

ParameterUnconfined concreteConfined concrete
Good bond conditionsAll other bond conditionsGood bond conditionsAll other bond conditions

0.6 mm0.6 mm1.0 mm1.0 mm
0.6 mm0.6 mm3.0 mm3.0 mm
1.0 mm2.5 mmClear Rib SpacesClear Rib Spaces
0.40.40.40.4
0.15 0.15 0.40 0.40