Effects of strain rate on the tensile behavior of cementitious composites made with amorphous metallic fiber
Effects of strain rate on the tensile behavior of cementitious composites made with amorphous metallic fiber
复制标题
DOI：
10.1016/j.cemconcomp.2020.103519
复制
发表时间：
2020-04-01
影响因子：
10.5
通讯作者：
Mechtcherine, Viktor
中科院分区：
文献类型：
--
作者：
Kim, Hongseop;Kim, Gyuyong;Mechtcherine, Viktor
非晶态金属纤维比普通结晶钢纤维具有更高的拉伸强度以及耐腐蚀和耐磨性。其用作增强材料可提高混凝土的抗裂性和抗弯、拉伸性能。在当前的研究中，在准静态和动态加载状态下，将薄板非晶金属纤维增强水泥复合材料（AFRCC）的拉伸行为与钩状钢纤维增强水泥复合材料（HSFRCC）的拉伸行为进行了比较。与 HSFRCC 相比，AFRCC 表现出高应力分布效应和更高的拉伸强度、应变能力和峰值韧性，但拉伸韧性较低，拉伸强度、应变能力和韧性的动态增加系数值较低。
Amorphous metallic fiber has higher tensile strength as well as corrosion and wear resistance than common, crystalline steel fibers. Its utilization as reinforcement improves the crack resistance and flexural and tensile performance of concrete. In the study at hand, the tensile behavior of thin plate amorphous metallic fiber-reinforced cementitious composites (AFRCC) is compared with that of hooked steel fiber-reinforced cementitious composites (HSFRCC) for both quasi-static and dynamic loading regimes. AFRCC exhibites a high stress distribution effect and higher tensile strength, strain capacity, and peak toughness than HSFRCC, but lower tensile toughness and lower dynamic increase factor values for tensile strength, strain capacity, and toughness.