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相关概念视频

Pore Size Distribution01:23

Pore Size Distribution

105
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...
105
Shape and Texture of Coarse Aggregate01:25

Shape and Texture of Coarse Aggregate

199
Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
199
Types of Building Stone01:30

Types of Building Stone

94
Building stones, essential materials for construction, are extracted from natural rock deposits and processed into specific forms and dimensions suitable for various building applications. These stones are broadly classified into three types based on their geological formation: igneous, sedimentary, and metamorphic.
Igneous rocks are formed from the solidification of magma or lava. An example is granite, known for its durability and resistance to weathering, making it ideal for parts of...
94
Structures of Solids02:22

Structures of Solids

14.1K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
14.1K
Porosity in Cement Paste01:18

Porosity in Cement Paste

119
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...
119
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.2K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.2K

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相关实验视频

Updated: Jun 16, 2025

Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography
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在孔径几何和结构上 岩石类型

Farizal Hakiki1,2,3, Muhammad Nur Ali Akbar4, Zaki Muttaqin5

  • 1National Yang Ming Chiao Tung University, Disaster Prevention and Water Environment Research Center, Hsincu 30010, Taiwan.

ACS omega
|August 19, 2024
PubMed
概括

这项研究提供了对孔几何和结构 (PGS) 岩石类型的第一个物理解释,增强了水库的特征,并使用电阻和岩石类型实现了准确的透性预测. 这促进了石油和天然气勘探和二氧化碳储存.

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Last Updated: Jun 16, 2025

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科学领域:

  • 石油地质科学 石油地质科学
  • 储水库工程 储水库工程
  • 地质物理学 地质物理学

背景情况:

  • 精确的岩石类型对水库开发至关重要,影响碳化合物储备预测和CO2/储能.
  • 与传统方法相比,孔隙几何和结构 (PGS) 方法可以更好地预测连接水和和毛细血管压力分组.
  • 现有的PGS岩石类型缺乏全面的物理解释,阻碍了其全面的应用.

研究的目的:

  • 提供孔几何和结构 (PGS) 岩石类型化方法的第一个整体物理解释.
  • 建立一个以物理为灵感,以数据为驱动的框架,以了解PGS岩石类型,使用广泛的液压性能数据.
  • 开发一种基于电阻和岩石类型的透性预测的新方法.

主要方法:

  • 数以千计的实验测量液压性能 (透性,孔隙性,特定表面积,孔隙大小) 的汇编和分析.
  • 应用分析理论和科泽尼-卡曼方程来物理解释PGS岩石类型.
  • 对PGS与液压流量单元岩石类型的比较分析.

主要成果:

  • 证明了为什么PGS方法优于液压流量单元岩石类型.
  • 澄清了液压特性,岩石类型和电阻力之间的因果与间接关系.
  • 提出了一种新的方法,通过电阻和岩石类型号来预测透性.
  • 提供了关于避免透性的递归预测的见解.

结论:

  • 以物理为灵感的数据驱动的PGS岩石类型解释在水库表征方面取得了重大进展.
  • 开发的方法提高了碳化合物储备估计和地下储存能力预测的准确性.
  • 这项工作为更可靠的水库建模和管理奠定了基础.