磷渣粉颗粒的自相似分形特征及其对水泥基体系力学性能的影响

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-02-28 DOI:10.1007/s11223-024-00618-8
X. L. Ge, H. Y. Xu, W. B. Liu, H. Wang, H. Yang
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引用次数: 0

摘要

首先,本文使用激光粒度分析仪测试了四种比表面积磷矿渣粉末颗粒的粒度分布特征。然后,利用粉末分形理论确定了不同比表面积磷矿渣粉末颗粒组的分形维数。最后,研究了磷矿粉颗粒组的分形尺寸对磷矿粉-水泥胶凝体系在 3 d、28 d 和 180 d 龄期的机械强度和活性指数的影响。结果表明,不同比表面积的磷矿渣粉具有自相似的分形特征;磷矿渣粉的比表面积越大,分形维数越高,磷矿渣粉颗粒的分形维数可以表征磷矿渣粉在粉磨和细化过程中细度和颗粒级配的特性。磷渣粉颗粒分形维数、磷渣粉-水泥胶凝体系的力学强度和活性指数具有线性相关的特点,分形维数越大,磷渣粉胶凝体系的力学强度和活性指数越高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Self-Similar Fractal Characteristics of Phosphorus Slag Powder Particles and its Effect on the Mechanical Properties of Cementitious Systems

Firstly, this paper used a laser particle size analyzer to test the particle size distribution characteristics of four specific surface areas of phosphate slag powder particles. Then, it used the powder fractal theory to determine the fractal dimension of the different specific surface areas of the phosphate slag powder particle group. Finally, the effect of the fractal dimension of the phosphate slag powder particle group on the mechanical strength and activity index of the phosphate slag powder-cement cementitious system at 3 d, 28 d, and 180 d ages were studied. The results showed that the phosphate slag powder with different specific surface areas has self-similar fractal characteristics; the larger the specific surface area of phosphate slag powder, the higher the fractal dimension, and the fractal dimension of phosphate slag powder particle can characterize the properties of phosphate slag powder’s fineness and particle gradation in the process of grinding and refining. The phosphorus slag powder particle fractal dimension, the mechanical strength, and activity index of the phosphorus slag powder-cement cementitious system have linear correlation characteristics; the larger the fractal dimension, the higher the mechanical strength and activity index of the cementitious system with phosphate slag powder.

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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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