Yun Hyun-Do, Jeong Gwon-Young, Choi Won-Chang
Department of Architectural Engineering, Chungnam National University, Daejeon 305-764, Korea.
Korea Land and Housing Corporation, Jinju-si 52852, Korea.
Materials (Basel). 2021 Dec 21;15(1):17. doi: 10.3390/ma15010017.
Steel fiber has been used successfully in concrete mixtures to control volumetric changes, including shrinkage. However, the feasibility of the use of steel fiber has been restricted to nonstructural construction, such as 'slab on ground'. Recently, researchers have attempted to expand the applications of steel fiber to replace structural reinforcement (rebar) and have shown promising results in its substitution for shear reinforcement. Few studies have been conducted to ensure the feasibility of using steel fiber in structural components, however. This experimental study was designed to investigate the shear performance of steel fiber-reinforced concrete beams using the tensile strength of steel fiber and the shear span-to-depth ratio as variables. The experimental results indicate that the tensile strength of steel fiber significantly affects the shear strength of steel fiber-reinforced concrete beams, regardless of the shear span-to-depth ratio, and that steel fiber can play a role in shear reinforcement of concrete beams.
钢纤维已成功用于混凝土混合物中，以控制包括收缩在内的体积变化。然而，钢纤维的使用可行性一直局限于非结构建筑，如“地面板”。最近，研究人员试图扩大钢纤维的应用范围，以取代结构钢筋（钢筋），并且在其替代抗剪钢筋方面已显示出有希望的结果。然而，很少有研究来确保在结构构件中使用钢纤维的可行性。本试验研究旨在以钢纤维的抗拉强度和剪跨比作为变量，研究钢纤维增强混凝土梁的抗剪性能。试验结果表明，无论剪跨比如何，钢纤维的抗拉强度都会显著影响钢纤维增强混凝土梁的抗剪强度，并且钢纤维可以在混凝土梁的抗剪加固中发挥作用。
