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Published in:
2018 | Supplement | Chapter
Pseudo Strain Hardening Behavior of Reinforced UHPFRC Member Under Uniaxial Tension
Authors : Kazunari Sasaki, Ryota Mori, Minoru Kunieda
Published in: Strain-Hardening Cement-Based Composites
Publisher: Springer Netherlands
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Abstract
Strain hardening and multiple fine cracking behaviors are novel material properties of Strain Hardening Cementitious Composites (SHCC), and these can also impart novel function to structural members. Ultra High Performance Fiber Reinforced Composite (UHPFRC) has ultra-high strength over 180 MPa and significant dense matrix giving higher durability. In general, UHPFRC gives strain softening behavior in tension because of ultra-high strength matrix comparing to fiber bridging stress. Since ordinary applications of UHPFRC do not allow a crack, ordinary RC system with a reinforcing bar is not used.
This paper presents that small amount of reinforcement can enhance crack distribution of UHPFRC, and the reinforced UHPFRC member represents pseudo strain hardening behavior in tension. The condition to obtain the pseudo strain hardening behavior is also discussed. Eventually, the usage of reinforced UHPFRC with pseudo strain hardening and multiple fine cracking is proposed.