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Kaipeng Zhu, Kai Li, Yadong Ji, Xiaolong Li, Xuan Liu, Kaide Liu and Xuandong Chen
The microscopic pore structure of sandstone determines its macroscopic permeability. Based on computer tomography (CT) technology, CT scans were performed on three different types of sandstone pore structures, namely coarse sandstone, medium sandstone, a...
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Jinchao Wang, Qijun Guo, Wei Chen and Houceng Liu
In order to more accurately realize the automatic identification and quantitative characterization of coral reef multi-scale pore structure, this paper has carried out such research. On the basis of using multiple information acquisition technology, it c...
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Xianzheng Yu, Hua Liu, Xiaolin Fan, Liangyu Zhu, Chengqi Zhang and Shiyi Zhang
In marine environments, bridge piers and columns are prone to corrosion caused by harmful media, particularly chloride ions. This corrosion can lead to cracking of the steel bars in the protective layer of the bridge piers. To enhance the corrosion resis...
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Yalin Nan, Ya-Ni Wei, Kui Liu and Yanbo Cao
The micro pores in loess show regional variation in structure on the Loess Plateau and greatly influence the physical properties and macro behaviors of loess. In this study, the 3D microstructures of Malan loess from Lanzhou (LZ), Qingyang (QY), Hengshan...
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Shilong Peng, Zhijun Li, Yuhao Xu and Guangyong Cao
The study of deep soil mechanics is the basis of deep shaft construction. Exploring the nonlinear permeability mechanism of deep confined aquifers in depth is the prerequisite and foundation for carrying out calculations of the hydrophobic consolidation ...
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Wenjie Kong, Hao Dong, Jie Wu, Yidi Zhao and Zhou Jin
Porous media has potential applications in fluid machinery and in aerospace science and engineering due to its excellent drag-reduction properties. We carried out experimental time-resolved particle image velocimetry (TR-PIV) research, laying porous medi...
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José V. Gaspareto, Jocenei A. T. de Oliveira, Everton Andrade and Luiz F. Pires
Representative elementary volume (REV) is required for representative measurements of soil physical properties. However, questions may arise whether REV depends on how the soil structure is modified or whether processes in the soil affect REV. Here, we e...
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Boyuan Zhu, Jianghui Meng, Chen Song, Renfang Pan, Zhengping Zhu and Jineng Jin
The structural evolution and sedimentary differentiation of the Sichuan Basin in China are complex, with intricate reservoir pore structures that significantly impact shale gas production. This study examines the complexity and heterogeneity of the micro...
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Yue Wang, Liangshun Li, Mingzhe An, Yifan Sun, Ziruo Yu and Hanfeng Huang
The capillary absorption capacity exerts an important effect on the durability of cement-based materials and is closely related to the pore structure. In this study, a variety of cement-based specimens were examined. The capillary water absorption and po...
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Mingyu Li, Wenjing Sun and Zhanyang Chen
Adding biochar to soil can improve the soil?s physical?chemical properties, microscopic pore structure, and bacterial habitat. This affects the soil?s strength characteristics and the oxidization of methane. Using a Humboldt pneumatic direct shear instru...
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Zhe Xiang, Nong Zhang, Zhengzheng Xie and Chenghao Zhang
To study the damage and destruction behavior of small coal pillars in coal mine roadway driving along gobs under long-term in-situ stress and multiple engineering disturbances, an unconfined compression experiment under a discontinuous cyclic load was de...
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Junwei Liu, Shuiyue Chen, Xin Li and Zuodong Liang
This paper analyses the fluid?seabed?structure interactions (FSSI) around the open-ended pile by applying the in-house solver established on the open-source Computational Fluid Dynamics (CFD) platform. The Reynolds-averaged Navier?Stokes (RANS) equations...
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Dmitriy Ivonin, Timofey Kalnin, Eugene Grachev and Evgeny Shein
We present a methodology for a numerical analysis of three-dimensional tomographic images in this paper. The methodology is based on integral geometry, topology, and morphological analysis methods. It involves calculating cumulative and non-cumulative po...
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Qingzhong Zhu, Yanhui Yang, Xiuqin Lu, Dameng Liu, Xiawei Li, Qianqian Zhang and Yidong Cai
Coalbed methane (CBM) mainly adsorb in massive pores of coal. The accurate characterization of pores benefits CBM resource evaluation, exploration and exploitation. In this paper, mercury intrusion porosimetry (MIP) and low temperature nitrogen adsorptio...
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Chamila Gunasekara, Rahmat Dirgantara, David W. Law and Sujeeva Setunge
This study reports the effect of heat curing at 120 °C on the geopolymeric reaction and strength evolution in brown coal fly ash based geopolymer mortar and concrete. Moreover, an examination of this temperature profile of large size geopolymer concrete ...
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Guangfeng Liu, Zhaoqi Fan, Yang Lu, Siying Li, Bo Feng, Yu Xia and Qimeng Zhao
In this paper, the gas relative permeability considering slippage effect has been experimentally examined under various experimental conditions (i.e., ambient, high confining pressure, and high temperature). Experimentally, Klinkenberg permeabilities of ...
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Parvathy Chandrasekhar, Janis Kreiselmeier, Andreas Schwen, Thomas Weninger, Stefan Julich, Karl-Heinz Feger and Kai Schwärzel
Surface soil structure is sensitive to natural and anthropogenic impacts that alter soil hydraulic properties (SHP). These alterations have distinct consequences on the water cycle. In this review, we summarized published findings on the quantitative eff...
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Jaqueline Dalla Rosa, Miguel Cooper, Frédéric Darboux, João Carlos Medeiros, Carla Campanaro and Luiz Roberto Martins Pinto
Surface crusts, formed by raindrop impact, degrade the soil surface structure causing changes in porosity. An experiment was conducted with the objective of evaluating the influence of the formation of a crusting layer on the porosity (percentage of area...
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Patrícia Favaretto, Gelsa Edith Navarro Hidalgo, Carlos Hoffmann Sampaio, Rodrigo De Almeida Silva and Richard Thomas Lermen
The main objective of this study was to evaluate the use of construction and demolition waste (CDW) from the Passo Fundo region of Rio Grande do Sul (RS), Brazil, in the development of aerated foamed concrete. This waste had not yet been characterized or...
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Kazuhiro Yamamoto and Tatsuya Sakai
Nowadays, in the after-treatment of diesel exhaust gas, a diesel particulate filter (DPF) has been used to trap nano-particles of the diesel soot. However, as there are more particles inside the filter, the pressure which corresponds to the filter backpr...
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