TY - JFULL AU - Sung-yong Choi and Woo-tai Jung and Young-hwan Park PY - 2013/11/ TI - A Study on the Improvement of the Bond Performance of Polypropylene Macro Fiber According to Longitudinal Shape Change T2 - International Journal of Civil and Environmental Engineering SP - 758 EP - 763 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/17200 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 82, 2013 N2 - This study intends to improve the bond performance of the polypropylene fiber used as reinforcing fiber for concrete by changing its shape into double crimped type through the enhancement its fabrication process. The bond performance of such double crimped fiber is evaluated by applying the JCI SF-8 (dog-bone shape) testing method. The test results reveal that the double crimped fiber develops bond performance improved by more than 19% compared to the conventional crimped type fiber.  ER -