| 李维红*,王乾,陈旭浩,常西栋,陈宇红,裴强.纤维对3D打印水泥基材料力学性能的影响[J].实验力学,2021,36(4):499~506 |
| 纤维对3D打印水泥基材料力学性能的影响 |
| Effect of fiber on mechanical properties of 3D printing cement-based materials |
| 投稿时间：2020-11-29 修订日期：2020-12-29 |
| DOI：10.7520/1001-4888-20-234 |
| 中文关键词: 3D打印 水泥基材料 PVA纤维 玄武岩纤维 抗压强度 抗折强度 |
| 英文关键词:3D printing cement-based material PVA fiber basalt fiber mechanical property compressive strength flexural strength |
| 基金项目:省部共建粉体材料与特种陶瓷重点实验室项目(1903)；国家自然科学基金(51878108)；辽宁省重点研发计划指导计划(2019JH8/10100091) |
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| 中文摘要: |
| 将不同长度的PVA和玄武岩纤维分别以单一及混合形式掺入3D打印水泥基材料中，研究了纤维种类、长度、混合形式等对打印材料力学性能的影响规律。研究结果表明，PVA及玄武岩纤维的掺入均有助于提升打印材料的抗折强度；对于PVA纤维，以6mm和12mm长度的PVA纤维复掺后，对打印材料的力学性能提升效果最佳；玄武岩纤维则是以6mm长度纤维单独掺加时效果更好；将这两种纤维复掺后，与单一种类纤维掺入时相比，打印材料力学性能并未得到改善。两种纤维对3D打印水泥基材料的力学性能影响比较结果表明，在掺入长度为6mm和12mm的PVA纤维后，打印材料的力学性能更优；相较于浇筑试样，打印试样各龄期下的抗压和抗折强度均有下降，特别是对28d抗压强度影响较为明显。 |
| 英文摘要: |
| In this paper, PVA and basalt fibers of different length and size were mixed into 3D printing cement-based materials in single and mixed forms, respectively. and the influence of fiber types, lengths and mixed forms on the mechanical properties of printing materials was studied. The results show that the addition of PVA and basalt fiber can improve the flexural strength of printing materials; As for PVA fiber, the mixing of PVA fiber of 6mm and 12mm length can improve the mechanical properties of printing materials better. The basalt fiber has a better effect when mixed with 6mm length fiber alone. When the two kinds of fibers are mixed, the mechanical properties of printing materials are not improved compared with that of the single fiber. The comparison of the effects of two kinds of fibers on the mechanical properties of 3D printed cement-based materials shows that the mechanical properties of the printed materials are better when the PVA fibers with the length of 6mm and 12mm are added.Compared with the cast samples, the compressive and flexural strength of the printing samples at each age decreased, especially the 28d compressive strength was significantly affected. |
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