| 摘要: |
| 对纤维含量为25～55kg/m3的7组钢纤维混凝土（SFRC）试件进行了切口梁三点抗弯试验和电感试验,分析了不同纤维含量下钢纤维混凝土的弯拉性能和纤维分布规律.试验结果表明：当SFRC试件中的纤维含量为35、50kg/m3时,纤维的增韧效果明显提高;试件中的实际纤维含量与设计含量最大仅相差64%;在试件X、Y、Z方向上的纤维分布比例大致为12∶14∶10,与纤维含量关系不大,且随着纤维含量的增加,SFRC试件中的纤维分布更为均匀. |
| 关键词: 钢纤维混凝土 纤维分布 电感试验 三点抗弯试验 |
| DOI：103969/j.issn.1007 9629202004015 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51604183);山西省重点研发计划项目(201703D111027) |
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| Experimental Study on Flexural Properties and Fiber Distribution of Steel Fiber Reinforced Concrete |
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ZHAO Jian, LIAO Lin, ZHANG Fan, LIU Guanzhi, WANG Mei
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College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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| Abstract: |
| Three point bending test and inductive test were carried out on 7 sets of steel fiber reinforced concrete（SFRC） specimens with fiber content of 2555kg/m3, while the flexural tensile properties and fiber distribution of SFRC with different fiber content were analyzed. The results from the three point bending test show that the SFRC specimens are reinforced significantly when the fiber content is at 35kg/m3 and 50kg/m3. The results from the inductive test show that the maximum difference between actual fiber content and design content is only 64% and the ratio of fiber distribution in the X, Y and Z directions of specimen is approximately remained at 12∶14∶10, which is not particularly affected by fiber content. It is also found that the fibers in the specimen become more uniformly distributed along with the increase of fiber content. |
| Key words: steel fiber reinforced concrete(SFRC) fiber distribution inductive test three point bending test |
