PRE-STRESSED CONCRETE REINFORCEMENT
Pre-tensioning tendon
CFCCs used as pre-tensioning tendon are 7 strands or uni-strand cables.
CFCC can be stressed as same as ordinal PC steel strands cable by means of connecting a PC strands cable of about the same diameter of CFCC and CFCC cut into the desired length through a specific coupler.
(Refer to the drawing and the girder manufacsturing procedure shown below.)
CFCC can be stressed as same as ordinal PC steel strands cable by means of connecting a PC strands cable of about the same diameter of CFCC and CFCC cut into the desired length through a specific coupler.
(Refer to the drawing and the girder manufacsturing procedure shown below.)
| Manufacturing procedure of the girder |
| 1.Installing CFCC, and coupling with PC steel strands cable |
| 2.Pre-loading and final loading of CFCC |
| 3.Distribution and binding of stirrups |
| 4.Placing formwork, pouring concrete and curing |
| 5.Displacement of formwork and transfer of stress to the concrete girder |
In regard to design and installation of pre-stressed concrete using CFCC, please refer to "Recommendation for Design and Construction of Concrete Structures using Continuous Fiber Reinforcing Materials" issued by Japan Society of Civil Engineers (JSCE)
Post-tensioning tendon
CFCC is cut into the designated length and terminal fixers are attached on the both ends at the CFCC plant in Japan. CFCC post-tensioning tendons are shipped after the fabrication and delivered to each job site.
CFCC post-tensioning tendons are stressed with a center-hall hydraulic jack, a jack chair, and a tension bar, etc. (Refer to the drawing shown below.)
In regard to design and installation of pre-stressed concrete using CFCC, please refer to "Recommendation for Design and Construction of Concrete Structures using Continuous Fiber Reinforcing Materials" issued by Japan Society of Civil Engineers (JSCE)
