| 钢纤维对高性能混凝土弯曲韧性和断裂能影响的试验 |
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| 引用本文： | 王田凤.钢纤维对高性能混凝土弯曲韧性和断裂能影响的试验[J].工业建筑,2007,37(5):65-68. |
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| 作者姓名： | 王田凤 |
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| 作者单位： | 浙江省建筑科学设计研究院,杭州,310012 |
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| 摘 要： | 参照国际材料与结构联合会标准(RILEM),对钢纤维高性能混凝土开口梁进行三点弯曲试验。试验结果表明,钢纤维类型和掺量均为影响高性能混凝土弯曲韧性和断裂能的重要因素。高性能混凝土的能量吸收能力和断裂能随纤维掺量的提高而提高;与低强凸痕型钢纤维相比,端部带弯钩的高强钢纤维对高性能混凝土弯曲韧性和断裂能的提高效果更为显著。综合利用断裂能和弯曲韧性指标,才能更全面地描述混凝土在弯曲过程中的受力与破坏特征。
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| 关 键 词： | 钢纤维高性能混凝土 纤维掺量 纤维类型 弯曲韧性 断裂能 |
| 修稿时间： | 2006-07-10 |
EXPERIMENT ON THE EFFECTS OF STEEL FIBERS ON THE FLEXURAL TOUGHNESS AND FRACTURE ENERGY OF HIGH-PERFORMANCE CONCRETE |
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| Wang Tianfeng.EXPERIMENT ON THE EFFECTS OF STEEL FIBERS ON THE FLEXURAL TOUGHNESS AND FRACTURE ENERGY OF HIGH-PERFORMANCE CONCRETE[J].Industrial Construction,2007,37(5):65-68. |
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| Authors: | Wang Tianfeng |
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| Affiliation: | Zhejiang Acadamy of Building Research and Design Hangzhou 510012 |
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| Abstract: | According to the test method recommended by RILEM,three-point bending tests on notched beams of steel-fiber reinforced high-performance concrete(SFHPC) were carried out.The experimental results show that both steel fiber type and steel fiber content play important roles in the flexural toughness and fracture energy of high-performance concrete(HPC).The energy absorption capacity and fracture energy of SFHPC increase obviously with the increase of steel fiber content.Compared to the marked steel fiber with lower strength,the hooked steel fiber with higher strength has better effects on the flexural toughness and fracture energy of HPC.The mechanical and failure characteristics of SFHPC beams in bending test can be described well by using fracture energy and flexural toughness indices together. |
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| Keywords: | SFHPC fiber content fiber type flexural toughness fracture energy |
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