钢纤维混凝土性能主要取决于钢纤维在混凝土基体中的分布情况.研究钢纤维空间分布的方法可分传统破坏性试验和非破坏性试验.破坏性试验主要有人工统计破坏截面纤维根数和取向、X射线成像及在此基础上提出的X射线计算机断层扫描三维成像技术.根据钢纤维本身的电磁性,近年来国内外学者提出了比较有效的非破坏性试验:交流电阻抗光谱学、四电极电阻率测量法、开放式同轴探针测量、电磁感应法、C型铁磁探针法.本文对以上方法的优缺点进行了综述,并对纤维分布研究的发展趋势进行了分析.
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