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Efficiency of basalt fiber length and content on mechanical and microstructural properties of hybrid fiber concrete
Fatigue & Fracture of Engineering Materials & Structures ( IF 3.7 ) Pub Date : 2021-05-05 , DOI: 10.1111/ffe.13483
Mehran Khan 1 , Mingli Cao 1 , Chaopeng Xie 1 , Majid Ali 2
Affiliation  

Recently, multiscale hybrid fiber-reinforced concrete is used instead of single fiber-reinforced concrete to achieve better performance with hybrid fiber at their respective scale size. In this study, the fracture properties of multiscale hybrid fiber-reinforced concrete are considered. This work aims to evaluate the effect of different basalt fiber (BF) lengths and contents on fracture parameters of fly ash–CaCO3 whisker–steel fiber-reinforced concrete (FCSF). The measured fracture parameters are initial fracture toughness urn:x-wiley:8756758X:media:ffe13483:ffe13483-math-0001, unstable fracture toughness ( urn:x-wiley:8756758X:media:ffe13483:ffe13483-math-0002), fracture energy (GF) by various methods, and gain ratio (GR) of fracture parameters. Furthermore, the cracking mechanism and microstructural study are discussed. The different considerable amount of enhancement was indicated by FCSF-BF for fracture characteristics as compared to that of plain concrete (PC).

中文翻译:

玄武岩纤维长度和含量对混合纤维混凝土力学和微观结构性能的影响

最近,使用多尺度混合纤维增强混凝土代替单纤维增强混凝土,以在各自的尺度尺寸下使用混合纤维获得更好的性能。在这项研究中,考虑了多尺度混合纤维增强混凝土的断裂特性。本工作旨在评估不同玄武岩纤维 (BF) 长度和含量对粉煤灰-CaCO 3晶须-钢纤维增强混凝土 (FCSF)断裂参数的影响。测量的断裂参数有初始断裂韧度urn:x-wiley:8756758X:media:ffe13483:ffe13483-math-0001、不稳定断裂韧度( urn:x-wiley:8756758X:media:ffe13483:ffe13483-math-0002)、各种方法的断裂能(GF)和增益比(GR) 的断裂参数。此外,还讨论了开裂机理和微观结构研究。与素混凝土 (PC) 相比,FCSF-BF 的断裂特性表明了不同的显着增强量。
更新日期:2021-07-08
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