Article
Geosciences, Multidisciplinary
Lucille Carbillet, Fabian B. Wadsworth, Michael J. Heap, Patrick Baud
Summary: The strength of porous rocks varies depending on the porosity and grain size. Synthetic samples showed that different models are needed to accurately predict strength for high-porosity granular samples and low-porosity non-granular samples. A regime plot was proposed to determine the suitable micromechanical model for strength prediction based on porosity and grain size.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Mechanical
Zhiguo Tian, Duzhou Zhang, Gang Zhou, Shaohua Zhang, Moran Wang
Summary: This study proposes a numerical framework to analyze the permeability-porosity relationship of powder materials during cold compaction and solid-state hot sintering processes. The results show that the permeability follows a cubic scaling law during cold compaction, but decreases significantly during the hot sintering process at low porosity. An exponential decay function is proposed as a correction factor to predict the permeability-porosity relationship, which agrees well with both numerical and experimental data. The analysis of microstructure evolution reveals the disappearance of small pores connecting large pores during sintering, resulting in the notable decrease in permeability at low porosity. The excellent agreement between numerical predictions and experimental measurements demonstrates the usefulness of the proposed framework for material design and optimization.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Construction & Building Technology
Zheng Hu, Tao Wen, Kexun Zheng, Yankun Wang
Summary: This study conducted mechanical tests and analysis on solution pore and crevice limestones, proposing a new method to determine the mechanical parameters of this type of limestone. The proposed method simplifies the complexity of parameter selection, enhances reliability and applicability, and has certain guiding significance for the construction of similar sites.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Ha L. Nguyen, Roc Matheu, Christian S. Diercks, Tan L. H. Doan, Binh T. Nguyen, Kyle E. Cordova
Summary: A new Zr-MOF named MOF-700 was designed and metalated to produce three highly porous MOFs, with MOF-701 showing a 50% improvement in methane storage working capacity. Postsynthetic metalation offers the prospect of optimizing methane working storage capacity.
ACS MATERIALS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Ha L. Nguyen, Roc Matheu, Christian S. Diercks, Tan L. H. Doan, Binh T. Nguyen, Kyle E. Cordova
Summary: This article describes the design of a new Zr-MOF, MOF-700, and its isoreticular series of three new Cu(II) metalated MOFs (MOF-701, MOF-702, and MOF-703). Metalation was found to improve the porosity and methane storage working capacity of the MOFs.
ACS MATERIALS LETTERS
(2022)
Article
Engineering, Ocean
Mengchen Zhang, Yi Luo, Hangli Gong, Yingwei Zhu, Xinping Li
Summary: A digital core technique was used for 3D reconstruction of reef limestone and the maximum-ball algorithm was adopted for pore network extraction. The quantification and 3D visualization of pore throats in reef limestone were achieved. Fractal theory was combined with digital core technology to calculate the 2D and 3D fractal dimensions of four different densities of reef limestone. The results showed that porosity decreases as density increases, and the pore and throat radii followed logarithmic normal distribution.
MARINE GEORESOURCES & GEOTECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Fengling Lu, Ronghuan Wu, Miaoda Shen, Lijun Xie, Mengtao Liu, Yifan Li, Sanzhong Xu, Li Wan, Xianyan Yang, Changyou Gao, Zhongru Gou
Summary: The pore geometry of Ca-silicate bioceramic scaffolds significantly influences their structural strength, with different pore shapes showing varying compressive and flexural resistance. The relationship between pore structure and mechanical properties can be controlled through design to tailor scaffold bio-dissolution, demonstrating the potential for optimizing porous bioceramic designs for required structural and mechanical stability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Mirhasan Hosseini, Rossen Sedev, Mujahid Ali, Muhammad Ali, Jalal Fahimpour, Alireza Keshavarz, Stefan Iglauer
Summary: This study investigates the wettability alteration of Indiana limestone for hydrogen geological storage. The results show that the rock exhibits increased H2-wetness after exposure to organic acids under reservoir conditions, but this hydrophobicity significantly decreases after treatment with nanofluids. This wettability reversal may enhance H2 storage capacity and containment security.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Construction & Building Technology
Guangji Xu, Jianwei Fan, Tao Ma, Wei Zhao, Ximao Ding, Zhiwen Wang
Summary: The study confirmed the feasibility of using limestone aggregates in the sublayer of double-layer permeable asphalt pavement, identified optimal asphalt content and reasonable Marshall blows, and obtained temperature stability, water stability, and water permeability. The compaction characteristics and mechanical properties of limestone mixtures met the specifications' requirements.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Isis Rodriguez Perez, Graca Vasconcelos, Paulo B. Lourenco, Patricia Quintana, Claudia Garcia, Amelia Dionisio
Summary: Churches in the Yucatan region of Mexico are considered a significant cultural heritage, with some exhibiting pathologies in the stone masonry vaults. A study was conducted to characterize limestones used in these churches from the 16th to 18th centuries, analyzing physical and mechanical properties and finding correlations between them through statistical analysis. The research revealed the composition and properties of the limestones used, grouping them into distinct categories based on physical characteristics and mechanical performance.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Tong Jia, Liqiang Zhang, Cai Chen, Zuotao Wang, Yiming Yan, Junjian Li
Summary: Mechanical compaction is crucial in sandstone reservoirs, and particle breakage significantly affects the physical properties of the reservoir. This study proposes a discrete element simulation method based on particle cutting to model mechanical compaction and calibrates the simulation parameters using experimental results. The simulation method proves to be computationally efficient and accurately reflects the process of particle breakage. The simulation results align well with the experimental data. The study also highlights the importance of considering particle breakage in understanding the pore evolution process during mechanical compaction, and the simulation method can be applied to complex geological conditions and integrated with other reservoir simulation methods. The results of the simulation can serve as valuable training samples for artificial intelligence and emerging technologies.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Construction & Building Technology
Weizhuo Zhang, Chenhao Zheng, Zhenlin Li, Hesong Jin, Jun Liu, Jihua Zhu, Wei Liu, Feng Xing
Summary: This study investigated the effect of PP fibers and SCMs on the properties of seawater ECC. The results showed that incorporating 25% LC2 improved the mechanical properties and promoted early hydration. Adding 2% volume of PP fiber, especially in combination with 25% LC2, further increased the toughness of the material compared to ordinary seawater ECCs.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Chemical
Leo Desbois, Pierre Tchoreloff, Vincent Mazel
Summary: This study focuses on the influence of viscoplasticity on powder behavior and tablet properties. Experimental results show that viscoplasticity is not constant during compaction and transient phenomena and stress relaxation occur.
Article
Engineering, Chemical
Dazhao Gou, Xizhong An, Runyu Yang
Summary: This study investigated the effect of particle breakage on the pore structure of compacts using the discrete element method, and quantified pore properties using the watershed segmentation method. The results showed that particle breakage led to a decrease in pore size and throat diameter, resulting in an increase in mean residence time and a decrease in dispersion coefficient.
MINERALS ENGINEERING
(2022)
Article
Polymer Science
Reema H. Alasfar, Viktor Kochkodan, Said Ahzi, Nicolas Barth, Muammer Koc
Summary: This study prepared polysulfone (PSF) membranes with different loadings of cellulose nanofibers (CNFs) using the phase inversion method and investigated the pore morphology, mechanical properties, membrane performance, and hydrophilicity. The results showed that the addition of CNFs improved the mechanical properties, water fluxes, and hydrophilicity of the membranes. The optimal loading of 0.3 wt.% CNF enhanced the elastic modulus, yield stress, and resistance to compaction. CNFs were found to be homogeneously dispersed within the PSF matrix at CNF loading less than 0.5 wt.%.
Article
Geochemistry & Geophysics
Patrick Baud, Thierry Reuschle, Yuntao Ji, Cecilia S. N. Cheung, Teng-fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2015)
Article
Geochemistry & Geophysics
Wei Zhu, Patrick Baud, Sergio Vinciguerra, Teng-fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2016)
Article
Geochemistry & Geophysics
Teng-Fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2017)
Article
Geochemistry & Geophysics
Patrick Baud, Ulrike Exner, Marco Lommatzsch, Thierry Reuschle, Teng-fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2017)
Article
Engineering, Geological
WaiChing Sun, Teng-fong Wong
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2018)
Article
Geochemistry & Geophysics
Ying Wang, Fanbao Meng, Xiaoqiong Wang, Patrick Baud, Teng-fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2018)
Article
Geochemistry & Geophysics
Yuntao Ji, Stephen A. Hall, Patrick Baud, Teng-fong Wong
GEOPHYSICAL JOURNAL INTERNATIONAL
(2015)
Article
Engineering, Geological
Patrick Baud, Teng-fong Wong, Wei Zhu
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2014)
Article
Geochemistry & Geophysics
Fanbao Meng, Patrick Baud, Hongkui Ge, Teng-fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2019)
Article
Geochemistry & Geophysics
Guoyan Jiang, Xuejun Qiao, Xiaoqiang Wang, Renqi Lu, Lin Liu, Hongfeng Yang, Yuanda Su, Lili Song, Baoshan Wang, Teng-fong Wong
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Article
Geochemistry & Geophysics
Lingcao Huang, Patrick Baud, Benoit Cordonnier, Francois Renard, Lin Liu, Teng-fong Wong
EARTH AND PLANETARY SCIENCE LETTERS
(2019)
Article
Geochemistry & Geophysics
Fanbao Meng, Xingfu Li, Patrick Baud, Teng-fong Wong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2020)
Article
Engineering, Geological
Jinhyun Choo, Ammar Sohail, Fan Fei, Teng-fong Wong
Summary: This study characterizes and analyzes the shear fracture energies and characteristic slip displacements of stiff clays and shales, showing that they generally increase with the effective normal stress on the slip plane.
Article
Geochemistry & Geophysics
Patrick Baud, Stephen Hall, Michael J. Heap, Yuntao Ji, Teng-fong Wong
Summary: The understanding of the brittle-ductile transition (BDT) in porous limestone is more challenging due to the lack of consistent acoustic emission activity, requiring reliance on alternative techniques. The mechanical data from X-ray microComputed Tomography imaging (μCT) and Digital Volume Correlation (DVC) in Indiana limestone reveal the onset of shear-enhanced compaction can be approximated by an elliptical cap, with shear band angles ranging from 29 to 46 degrees. Comparison with published data on other limestones shows good agreement with plasticity theory.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Proceedings Paper
Engineering, Multidisciplinary
Patrick Baud, Stephen Hall, Yuntao Ji, Teng-Fong Wong, Michael J. Heap
POROMECHANICS VI: PROCEEDINGS OF THE SIXTH BIOT CONFERENCE ON POROMECHANICS
(2017)