| Title |
Compressional Behavior of HPFRCC Columns under Axial Loads |
| Authors |
Yun Hyun-Do ; Byun Jang-Bae ; Jeon Su-Man ; Hwang Sun-Kyung |
| Keywords |
High Performance Fiber-reinforced Cement Composites ; Steel Cord ; PVA Fiber ; Hybrid ; Columns ; Ductility |
| Abstract |
This paper explores the constitutive models of HPFRCC(High Performance Fiber Reinforced Cement Composite) column using PVA(Polyvinyl alcohol) fibers and SC(Steel cord) fiber and in particular the substitutability of fibers for transverse reinforcement. An experimental program was conducted that nine square reinforced cement composite columns were tested with varying fiber content and the volumetric ratio of transverse reinforcement. One contained no fibers, four contained simple PVA fibers and four contained hybrid SC and PVA fibers. All nine columns were tested by the application of a concentric, axial compression force. Also, constitutive model, proposed by Yong, Nour, and Nawy, are applied to express the stress-strain relationships in compression of HPFRCC columns. It was found that ductility improvements were noticeable for HPFRCC columns and the addition of fibers could reduce the amount of transverse reinforcement which confine core cement composite. It was also found that Yong model could predict the compressive behavior of HPFRCC columns. |