An Experiment on Bond-Anchoring Property of Prestressing Spiral Groove Tendon
Prestressing spiral groove tendon is a new sort prestressing tendon, its characteristic value of tensile yield strength fyk=1000MPa. Firstly, the yield strength, ultimate tensile strength, elastic modulus and elongation are all tested. According to 68 pullout tests, the bond-anchoring curves and failure modes have been studied, and the effects of concrete strength, diameter, anchoring length, thickness of concrete cover and stirrup ratio have been all analyzed. Finally, the equation for ultimate bond-anchoring strength has been suggested by statistical regression, and the test results are in good agreement with values of the suggested equation.
Paul P. Lin and Chunliang Zhang
M. Chen and P. W. Guan, "An Experiment on Bond-Anchoring Property of Prestressing Spiral Groove Tendon", Applied Mechanics and Materials, Vols. 105-107, pp. 1685-1688, 2012