An Experiment on the Bond-Slip Behaviors of Pre-Tensioned Prestressed UHPC Members

Abstract:

An Ultra High Performance Concrete (UHPC) exhibits very high compressive and tensile strength and excellent durability comparing to those of the conventional concrete. The applications of UHPC to precast and/or prestressed concrete result the optimum utilization of high strength characteristics. This paper experimentally investigates the bond-slip behaviors between prestressing strands and UHPC in pretnesioned members. The diameters of strands, 12.7mm and 15.2mm, the cover depths and tensioning forces are chosen as variables, which are known to affect the bond behaviors. The bond-slip curves for various specimens are obtained and the equations for bond strengths of UHPC are derived based on experiments.

• Periodical: Materials Science Forum (Volume 878)
• Pages: 161-164
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.878.161
• Online since: November 2016
• Authors: Jee Sang Kim*, Dong Hun Choi
• Keywords: Bond-Slip, Pretensioned Prestressed Member, Transfer Length, UHPC

References

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[3] Kim, Jee-Sang and Park, Jong Ho: Mater. Sci. Forum Vol. 857 (2016), pp.323-326.

[4] Kyung Hun Kook et al : Bond Characteristics of Ultra High Performance Concrete, KCI Journal, Vol. 22, No. 6(2010) pp.753-760 (in Korean).

[5] Byung Hwan Oh et al.: ACI Structural Journal, Vol. 111, No. 3(2014), pp.549-560.