纤维混凝土断裂性能的研究现状及展望

魏新江; 任梦博; 冯鹏; 吴熙; 廖娟

doi:10.13204/j.gyjzG20102205

纤维混凝土断裂性能的研究现状及展望

doi: 10.13204/j.gyjzG20102205

魏新江^1,2,
任梦博¹,
冯鹏³,
吴熙^2, ,,
廖娟²

1. 浙江大学建筑工程学院, 杭州 310058;
2. 浙大城市学院工程学院, 杭州 310015;
3. 清华大学土木工程系, 土木工程安全与耐久性教育部重点实验室, 北京 100084

基金项目:

杭州市科技局项目(20191203B42)

浙江省自然科学基金项目(LY18E080026)

国家自然科学基金项目(51708495)。

详细信息

作者简介:
魏新江,男,1965 年出生,博士,教授。

通讯作者:
吴熙,wuxi@zucc.edu.cn。

计量
- 文章访问数: 245
- HTML全文浏览量: 29
- PDF下载量: 21
- 被引次数: 0
出版历程
- 收稿日期: 2020-10-22
- 网络出版日期: 2022-06-30
- 刊出日期: 2022-02-20

A Review and Prospect for Fracture Properties of Fiber-Reinforced Concrete

WEI Xinjiang^1,2,
REN Mengbo¹,
FENG Peng³,
WU Xi^{2
, ,},
LIAO Juan²

1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. School of Engineering, Zhejiang University City College, Hangzhou 310015, China;
3. MOE Key Laboratory of Civil Engineering Safety and Durability of China, Department of Civil Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 断裂参数可用于分析纤维在不同受力阶段对材料断裂性能的影响程度,从而有助于准确评价纤维混凝土的断裂性能。通过整理常见的纤维混凝土断裂试验方法及其特点,介绍并分类基于试验方法得到的断裂参数,对比讨论了同类型和不同类型参数各自的优缺点及适用的纤维混凝土类型。根据收集到的纤维混凝土断裂参数的试验数据,分析影响纤维混凝土断裂性能的主要因素及其影响规律。研究发现:三点弯曲梁和四点弯曲梁是目前常用的断裂试件形式,通过其测试得到的断裂参数表征不同的断裂行为,建议使用等效抗弯强度综合评价纤维混凝土的断裂性能。最后,对纤维混凝土断裂性能的研究方向提出了展望。
- 纤维混凝土 /
- 断裂性能 /
- 断裂试验 /
- 断裂参数
Abstract: Fracture parameters can be used to analyze the influence of fibers on fiber-reinforced concrete specimens at different loading stages, thus being helpful to evaluate the fracture property of fiber-reinforced concrete accurately. In the paper, the common fiber concrete fracture test methods and their characteristics were sorted out, the fracture parameters based on the test methods were introduced and classified, and the advantages and disadvantages of parameters in the same and different types were compared and discussed. According to the experimental results of the existing research, the main factors to influence the fracture parameters were found and the influence pattern was concluded. The results showed that three-point bending beams and four-point bending beams were the common testing specimens to determine the fracture parameters of fiber-reinforced concrete. The parameters obtained by those specimens indicated different fracture properties of fiber-reinforced concrete, and the equivalent flexural tensile strength was recommended to evaluate the fracture property of fiber-reinforced concrete at different loading stages. Furthermore, the prospect of the future research on fiber-reinforced concrete was proposed.
- fiber-reinforced concrete /
- fracture property /
- fracture test /
- fracture parameters

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