相关实验视频

Updated: Jun 29, 2025

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

Published on: September 29, 2019

使用微CTCT评估石膏岩碎片的孔裂微结构

Filip Košek¹, Jan Dudák², Veronika Tymlová²

¹Institute of Geochemistry, Mineralogy, and Mineral Resources, Faculty of Science, Charles University, Albertov 6, Prague 128 00, Czech Republic.

Micron (Oxford, England : 1993)

|March 28, 2024

概括

射线微型计算机断层扫描 (micro-CT) 揭示了经过气候变化的石膏岩石的内部孔隙断裂微观结构. 这种方法有效地量化了多孔性,并对内分泌生物体的微生态环境进行了描述.

科学领域:

地质科学地质科学
地质生物学地质生物学
微生物学微生物学

背景情况:

经过气候变化的石膏岩石为内石生物提供了必不可少的息地.
了解这些岩石的内部微观结构对于描述这些息地至关重要.

研究的目的:

通过使用X射线微型计算机断层扫描 (微型CT) 来研究经过气候变化的石膏岩石的孔裂微结构.
为了估计多孔性和量化比较不同石膏样本的微观结构特征.
评估微CT适合在地生物学和微生物学中对石化息地进行表征的适用性.

主要方法:

使用X射线微型计算机断层扫描 (micro-CT) 来绘制化石膏岩样本的图像.
在Dragonfly软件中使用U-Net模型进行深度学习细分,用于识别和可视化多孔系统.
对空隙空间,毛孔网络和毛孔大小分布进行了定量分析.

主要成果:

微型CT显示了各种各样的石膏微型结构,包括空洞,骨折和二次气候特征.
该研究成功量化了多孔性,并描述了负责多孔空间的微观结构.
与侵入孔径测试的比较表明微CT在检测较大的孔径 (> 10μm) 中的有效性.

结论:

射线微型计算机断层扫描是一种有效的工具,用于检查化石膏岩石的内部微观结构.
这些发现对在地生物学和微生物学中对石质息地进行表征具有有希望的意义.
微CT提供了关于孔腔网络发展和潜在内皮质基质内连接的宝贵见解.

关键词:

深度学习是一种深度学习.石膏石膏是一种石膏.微型CT技术的使用多孔性多孔性分段化分段化分段化分段化在U-net中,U-net是指U-net网络.气候变化气候变化

更多相关视频

Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography

Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography

Published on: October 21, 2018

Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography

Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography

Published on: February 25, 2015

相关概念视频

Pore Size Distribution

Pore Size Distribution

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...

Microcracking in Concrete

Microcracking in Concrete

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...

Porosity in Cement Paste

Porosity in Cement Paste

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...