Steel Fiber Orientation Efficiency Factor Model for a Magnetically Treated Cement-Based Composite

IF 3.6 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY International Journal of Concrete Structures and Materials Pub Date : 2024-02-13 DOI:10.1186/s40069-023-00641-0

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Abstract

In typical steel fiber-reinforced concrete, the fibers are randomly distributed and oriented throughout the matrix, and a magnetic field can effectively align these randomly oriented fibers. To predict the extent to which the steel fibers contained in mortar can be aligned by a magnetic field, an analytical steel fiber orientation efficiency factor model was proposed as a function of the magnetic induction intensity and exposure time. To verify the applicability of the proposed model, experiments were conducted for various magnetic induction intensities and exposure times with normal mortars and mortars in which some or all the sand was replaced with steel slag. The experimental results demonstrate that the proposed model allows predicting the degree of alignment of steel fibers under magnetic fields. However, this model can only be applied to a normal mortar. In the case of mortar containing steel slag, it is confirmed that the steel slag, which is a ferrous material, reduces the magnetic induction intensity, reducing the degree of alignment of steel fibers in the mortar.

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磁处理水泥基复合材料的钢纤维定向效率因子模型

摘要在典型的钢纤维加固混凝土中，纤维在整个基体中随机分布和取向，磁场可以有效地排列这些随机取向的纤维。为了预测砂浆中的钢纤维在磁场作用下的排列程度，提出了一个钢纤维定向效率系数分析模型，该模型是磁感应强度和暴露时间的函数。为了验证所提模型的适用性，对普通砂浆和用钢渣代替部分或全部沙子的砂浆进行了不同磁感应强度和暴露时间的实验。实验结果表明，所提出的模型可以预测钢纤维在磁场下的排列程度。不过，该模型只能应用于普通砂浆。在含有钢渣的砂浆中，证实了钢渣这种含铁材料会降低磁感应强度，从而降低砂浆中钢纤维的排列程度。

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来源期刊

International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

6.30

自引率

5.90%

发文量

审稿时长

13 weeks

期刊介绍： The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.