Abstract
Carbon-glass fiber reinforced polymer (C-GFRP) tendons is a kind of two components fiber-reinforced material manufactured by using pulltrusion process, consisting of primarily longitudinal glass fibers bound by carbon fibers at a certain angle. The paper attempts to figure out the relationship of C-GFRP tendon’s maximum bearing capacity, loading capacity and creep behavior through tensile testing and creep testing of a C-GFRP tendon with the diameter of 8 mm. The results show that the ultimate tensile strength of the tendon is 1452.22 MPa, its tensile rate is 1.4% and its elastic modulus is 103.48 GPa, and that its failure mode is different from the silky failure mode of one component FRP tendon that is characterized with interface shear failure. When the level of stress C-GFRP tendons bear is 60% more than its ultimate tensile strength in value, there is an obvious impact on creep behavior and creep rate. By analyzing the relationship of stress level, creep rupture and loading time, it can be figure out that the safe work duration of C-GFRP tendons is 500,000 hours when its stress level is 42% of its ultimate tensile strength in value.
