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| 摘要: |
| 通过三点弯曲梁法测试了钢纤维、混杂纤维（钢纤维、聚丙烯纤维）增强RPC试件的断裂能．试验结果表明，钢纤维对RPC的增强增韧效果显著，而混杂纤维的效果更佳，给出了断裂能、特征长度等参数随纤维掺量的变化趋势，得出较优的纤维掺量，并分析了纤维增强RPC的整个破坏过程，对其破坏机理进行了初步探讨． |
| 关键词: 活性粉末混凝土 断裂能 纤维增强 |
| DOI： |
| 分类号:TU528.01 |
| 基金项目: |
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| Study on Fracture Energy of Reactive Powder Concrete Reinforced by Steel-Polypropylene Hybrid Fiber |
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YAO Zhi-xiong ZHOU Jian
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| Abstract: |
| The fracture energy of S-P hybrid fiber RPC using three-point bending test in Instron machine was tested. Study shows the good reinforcing and toughening effect by steel fiber and even better than that by hybrid fiber. Article gives the change trend of the properties such as fracture energy, characteristics length etc. with fiber volume fraction and an optimal fiber fraction is obtained and probes into the fracture process and mechanism of RPC are made. |
| Key words: reactive powder concrete,fracture energy,fiber strengthen |
