应变硬化纤维混凝土直接抗拉性能的试验与预测

IF 1.8 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Magazine of Concrete Research Pub Date : 2023-01-09 DOI:10.1680/jmacr.22.00060

T. Ngo, Quang-Huy Le, Duy‐Liem Nguyen, Dong Joo Kim, Ngoc-Thanh Tran

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引用次数: 1

摘要

本文对应变硬化钢纤维混凝土(SHSFRC)的直接抗拉性能进行了研究和预测。在单纤维拉拔试验和直接拉伸试验中，研究了三种钢纤维类型，即扭曲、钩状和光滑纤维，以及抗压强度分别为28 MPa (M1)、84 MPa (M2)和180 MPa (M3)的三种基体。此外，还建立了基于机器学习的模型来预测SHSFRC的抗拉性能。实验结果表明，捻度纤维在M1和M2中具有最高的拉拔阻力和最大的拉伸阻力，而光滑纤维在M3中具有相同的结果。从预测结果来看，该模型对SHSFRC抗拉性能的预测具有较高的效率和准确性，相关系数为0.951。

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Experiments and prediction of direct tensile resistance of strain hardening fiber-reinforced concrete

This study investigates and predicts the direct tensile resistance of strain hardening steel fiber-reinforced concrete (SHSFRC). Three steel fiber types, namely, twisted, hooked, and smooth fibers, and three matrices with different compressive strengths of 28 MPa (M1), 84 MPa (M2), and 180 MPa (M3) were investigated in both single fiber pullout tests and direct tensile tests. In addition, a machine learning-based model was developed to predict the tensile resistance of SHSFRC. The experimental results showed that twisted fibers exhibited not only the highest pullout resistance but also the greatest tensile resistance in M1 and M2, whereas smooth fibers achieved the same results in M3. From the predicting outcomes, the proposed model achieved high efficiency and accuracy in estimating the tensile resistance of SHSFRC, with a correlation coefficient of 0.951.

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来源期刊

Magazine of Concrete Research 工程技术-材料科学：综合

CiteScore

4.60

自引率

11.10%

发文量

102

审稿时长

5 months

期刊介绍： For concrete and other cementitious derivatives to be developed further, we need to understand the use of alternative hydraulically active materials used in combination with plain Portland Cement, sustainability and durability issues. Both fundamental and best practice issues need to be addressed. Magazine of Concrete Research covers every aspect of concrete manufacture and behaviour from performance and evaluation of constituent materials to mix design, testing, durability, structural analysis and composite construction.