Koo Do-Hyuck, Kim Jong-Sun, Kim Sun-Hee, Suh Sang-Wook
Department of Architectural Engineering, Gachon University, Seongnam-si 13120, Republic of Korea.
Materials (Basel). 2023 Oct 10;16(20):6623. doi: 10.3390/ma16206623.
In this study, a flexural test and residual stress evaluation using the aspect ratio (65 and 80) and steel fiber content (20, 30, and 40 kg/m) as variables were conducted according to the EN 14651 standard to investigate the flexural toughness of concrete reinforced with high-performance arched steel fibers. The result of the flexural test show that the residual stress was 114.5% higher in the test specimen with high curvature and high content of arched steel fibers than that in the other conditions. In addition, the energy absorption capacity of arched steel fiber-reinforced concrete increased by 138.88% compared to concrete.
在本研究中，根据EN 14651标准，以长径比（65和80）和钢纤维含量（20、30和40 kg/m）为变量进行了弯曲试验和残余应力评估，以研究高性能拱形钢纤维增强混凝土的弯曲韧性。弯曲试验结果表明，具有高曲率和高含量拱形钢纤维的试样中的残余应力比其他条件下的试样高114.5%。此外，与普通混凝土相比，拱形钢纤维增强混凝土的能量吸收能力提高了138.88%。
