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钢纤维体积率指钢纤维所占钢纤维混凝土体积的百分数,钢纤维体积率是钢纤维混凝土设计和施工控制的主要指标。目前,钢纤维体积率测定方法有X-射线计算机断层扫描法、混凝土介电常数测量法和水洗法,本文结合依托工程提出了一种新型体积率测定法:体积率断面测定法。本文方法较目前已有方法测试简便、成本低,可适应钢纤维混凝土拌合物的质量检验、也适应已经固化了的混凝土质量事故原因分析与工程验收,具有重要的工程应用价值。
Steel fiber volume ratio refers to the percentage of steel fiber steel fiber concrete volume, steel fiber volume ratio is steel fiber reinforced concrete design and construction control of the main indicators. At present, the measurement methods of volume fraction of steel fiber are X-ray computed tomography, concrete dielectric constant measurement method and water washing method. In this paper, a new volumetric rate determination method is proposed based on engineering. Compared with the existing methods, the present method has the advantages of simple test, low cost, adaptability to the quality inspection of the steel fiber concrete mixture, and also to the reason analysis and acceptance of the already cured concrete quality accident, which has important engineering application value.