深度学习细分与金属入侵用于硬化水泥糊的定量微结构分析
Hoan Nguyen1, Thanh-Binh Nguyen2
1Faculty of Science and Engineering, Southern Cross University, Military Rd., Lismore, NSW 2480, Australia.
Micron (Oxford, England : 1993)
|February 21, 2026
概括
先进的金属入侵和深度学习细分技术成功分析了硬化水泥糊的微观结构. 这种方法准确量化了孔隙和水泥相,这对于优化复合材料性能至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 计算科学 计算科学
背景情况:
- 硬化水泥糊的定量微观结构分析对于材料性能至关重要,但由于其复杂,无序的结构而受到阻碍.
- 传统的方法很难准确地区分和量化水泥矩阵内的各种阶段.
研究的目的:
- 开发和验证一种先进的方法,用于增强水泥复合材料的微结构分析.
- 改进对硬化水泥糊中孔隙和固体相的定量评估.
主要方法:
- 在压力下注入Field金属,一个低点合金,到水泥样品中,以改善背散电子 (BSE) 成像中的相位对比度.
- 利用深度学习细分模型,特别是U-Net和LinkNet,在BSE图像中细分孔隙,无水化和水化水泥阶段.
- 在细分阶段进行量化尺寸和形状分析 (面积,直径,固度,圆形,面积比).
主要成果:
- 结合金属入和深度学习方法,可以有效地对硬化水泥中的不同阶段进行细分.
- 无论是U-Net还是LinkNet都实现了高细分精度,平均IoU分数分别为0.89和0.87.
- U-Net表现出卓越的性能,捕获更细微的细节和更复杂的边界,用于精确的相位分析.
结论:
- 这种新的方法简化了水泥复合材料微结构分析,允许对单个阶段进行详细的定量评估.
- 精确量化微结构参数对于理解材料行为和优化水泥复合材料性能至关重要.
相关概念视频
01:18Porosity in Cement Paste
498
The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...
The balance of water to cement in the mix is...
498
01:23Pore Size Distribution
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In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio.
Adequate...
Adequate...
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01:20Microcracking in Concrete
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Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
511