[1]金清平,陈川,黄桥连,等.超高性能混凝土中纤维作用效应研究综述[J].水利与建筑工程学报,2024,(02):55-65.[doi:10.3969/j.issn.1672-1144.2024.02.009]
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超高性能混凝土中纤维作用效应研究综述()
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《水利与建筑工程学报》[ISSN:1672-1144/CN:61-1404/TV]

卷:
期数:
2024年02期
页码:
55-65
栏目:
出版日期:
2024-04-30

文章信息/Info

作者:
金清平1陈川1黄桥连2高永红1雷万雄2尹少龙1
1.武汉科技大学城市建设学院,湖北武汉430065;2.湖北交投建设集团有限公司,湖北武汉430081
关键词:
超高性能混凝土(UHPC)钢纤维形状与掺量纤维类型纤维混杂取向与分布
分类号:
TU528.31
DOI:
10.3969/j.issn.1672-1144.2024.02.009
摘要:
超高性能混凝土(UHPC)是一种具有超高强度、高耐久性的新型水泥基复合材料,其应用仍受到包括造价高、韧性不足、高温抗爆裂性能差等因素的影响,相关研究表明上述因素均与内掺纤维有关。为进一步促进纤维对UHPC性能的优化,推进UHPC在工程领域中的应用,通过梳理国内外近年来相关研究成果,总结钢纤维形状和长径比、不同纤维类型、纤维混杂和纤维取向分布对UHPC相关性能的影响,结果表明:钢纤维具备优异的力学性能且来源广泛,仍为UHPC中主要使用的纤维,异形钢纤维改善UHPC抗拉、抗弯等性能效果更好,但工作性能会相应地降低,建议钢纤维掺量采用2%~3%;不同类型纤维混掺存在最优组合,非钢纤维掺量普遍不超过0.5%;纤维平行于主拉应力方向分布能够提升纤维桥接作用的有效性,随机分布的纤维有效性降到了30%,对于纤维取向控制方法尚不成熟,需要进一步完善方法实现在非实验室条件下纤维定向分布的实际尺寸。

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备注/Memo

备注/Memo:
收稿日期:2023-10-06     修稿日期:2023-12-26
基金项目:国家自然科学基金资助项目(52178158);湖北省高等学校优秀中青年科技创新团队计划项目(T2022002);湖北省建设厅科研项目资助(厅头〔2022〕2198号-67);湖北交投建设集团有限公司科研计划项目(RD202206)
作者简介:金清平(1975—),男,教授,主要从事路桥工程与高性能土木工程材料方面的研究工作。E-mail:jinqingping@wust.edu.cn
通讯作者:陈 川(2000—),男,硕士研究生,研究方向为高性能土木工程材料。E-mail:cc123001@qq.com
更新日期/Last Update: 2024-04-30