
doi: 10.14264/022a9d2
Prestressing strands are often located eccentrically within ducts in post-tensioned structures due to curvature of profile. To investigate the bond performance of grouted tendons, pull-out tests are conducted on mono- and multi-strand tendons located eccentrically in grouted ducts in concrete at temperatures of 20°C to 600°C. Each specimen is first heated to the designated temperature and then loaded either immediately or after cooling down. Results show that the bond strength of eccentrically embedded tendons is lower than that of centrally embedded tendons. The bond strength and stiffness are found to decrease with increase of temperature, but the bond recovers certain strength after cooling down. The bond is enhanced by confinement steel surrounding the duct. However, specimens cooled by water behave almost the same as those cooled in air. A bond-slip model is proposed accordingly.
Pull-out testing, Prestressing strand, Bond, Thermal effects
Pull-out testing, Prestressing strand, Bond, Thermal effects
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
