Durability of CFRP strands used for prestressing of concrete structural members
This paper presents a comprehensive research conducted to study the synergistic effect of environmental conditions and sustained loading on the mechanical properties of Carbon Fiber Reinforced Polymer (CFRP) prestressing strands. The environmental conditions included exposure of CFRP strands to alkaline solution and sustained loading at an elevated temperature of 55 °C for 3000 and 7000 h. The sustained loading was equivalent to 65 percent of the guaranteed tensile strength of the strands. Mechanical testing performed on the strands included tensile, shear and bond strength as well as evaluation of the elastic modulus of the CFRP strands as affected by the environmental conditions and sustained loading. Durability of the constituent materials of the CFRP strands was also studied.
Construction and Building Materials
Digital Object Identifier (DOI)
Khalafalla, O., Pour-Ghaz, M., ElSafty, A., Rizkalla, S. (2019) Durability of CFRP Strands Used for Prestressing of Concrete Structural Members. Construction and Building Materials, 228, 116756. Doi: 10.1016/j.conbuildmat.2019.116756