Universidad de La Salle, Bogotá
Islamic Azad University, Iran/ CALTROP Consultant Eng. Co., San Pedro, California
The University of Western Ontario
Construction Engineering & Management, Purdue University
Enhancing Wettability Prediction In The Presence Of Organics For Hydrogen Geo-Storage Through Data-Driven Machine Learning Modeling Of Rock/H2/Brine Systems,
2023
Edith Cowan University
Enhancing Wettability Prediction In The Presence Of Organics For Hydrogen Geo-Storage Through Data-Driven Machine Learning Modeling Of Rock/H2/Brine Systems, Zeeshan Tariq, Muhammad Ali, Nurudeen Yekeen, Auby Baban, Bicheng Yan, Shuyu Sun, Hussein Hoteit
Research outputs 2022 to 2026
The success of geological H2 storage relies significantly on rock–H2–brine interactions and wettability. Experimentally assessing the H2 wettability of storage/caprocks as a function of thermos-physical conditions is arduous because of high H2 reactivity and embrittlement damages. Data-driven machine learning (ML) modeling predictions of rock–H2–brine wettability are less strenuous and more precise. They can be conducted at geo-storage conditions that are impossible or hazardous to attain in the laboratory. Thus, ML models were utilized in this research to accurately model the wettability behavior of a ternary system consisting of H2, rock minerals (quartz and mica), and brine at different operating geological …
Residual Trapping Of Co2, N2, And A Co2-N2 Mixture In Indiana Limestone Using Robust Nmr Coreflooding: Implications For Co2 Geological Storage,
2023
Edith Cowan University
Residual Trapping Of Co2, N2, And A Co2-N2 Mixture In Indiana Limestone Using Robust Nmr Coreflooding: Implications For Co2 Geological Storage, Amer Alanazi, Auby Baban, Muhammad Ali, Alireza Keshavarz, Stefan Iglauer, Hussein Hoteit
Research outputs 2022 to 2026
Carbon capture and sequestration (CCS) in geological formations is a prominent solution for reducing anthropogenic carbon emissions and mitigating climate change. The capillary trapping of CO2 is a primary trapping mechanism governed by the pressure difference between the wetting and nonwetting phases in a porous rock, making the latter a key input parameter for dynamic simulation models. During the CCS operational process, however, the CO2 is prone to contamination by impurities from various sources such as surfaces (e.g., pipelines and tanks) and the subsurface (e.g., existing natural gas). Such contamination can strongly influence the overall CO2 wettability, storage capacity, and …
Enhancing The Co2 Trapping Capacity Of Saudi Arabian Basalt Via Nanofluid Treatment: Implications For Co2 Geo-Storage,
2023
Edith Cowan University
Enhancing The Co2 Trapping Capacity Of Saudi Arabian Basalt Via Nanofluid Treatment: Implications For Co2 Geo-Storage, Muhammad Ali, Nurudeen Yekeen, Mirhasan Hosseini, Ghazanfer R. Abbasi, Amer Alanazi, Alireza Keshavarz, Thomas Finkbeiner, Hussein Hoteit
Research outputs 2022 to 2026
Mineralization reactions in basaltic formations have gained recent interest as an effective method for CO2 geo-storage in order to mitigate anthropogenic greenhouse gas emissions. The CO2/rock interactions, including interfacial tension and wettability, are crucial factors in determining the CO2 trapping capacity and the feasibility of CO2 geological storage in these formations. The Red Sea geological coast in Saudi Arabia has many basaltic formations, and their wetting characteristics are rarely reported in the literature. Moreover, organic acid contamination is inherent in geo-storage formations and significantly impacts their CO2 geo-storage capacities. Hence, to reverse the organic effect, the influence of various SiO2 …
Improving Square Skirted Foundations Behavior On Sand,
2023
Researcher at Structural Engineering Department, Faculty of Engineering, Mansoura University, Egypt
Improving Square Skirted Foundations Behavior On Sand, Tamer Al-Shyoukhi, Ayman Altahrany, Mahmoud Elmeligy
Mansoura Engineering Journal
Shallow foundations' behavior is enhanced by using skirts to confine the soil beneath the foundation. The bearing capacity and settlement of skirted foundations resting on the sand are influenced by the size of the skirt cell and shear strength of sand. Experimental modelling was carried out on an axially square-skirted footing resting on sand in this study. Plaxis-3D software was used for numerical analysis to support the experimental results. The numerical analysis results validated the experimental results. The outcomes of the study demonstrated that skirts wider than the footing size increased the bearing capacity of skirted foundations. In the case …
Dynamic Response And Characteristics Of Tapered Rigid Core Composite Cement- Soil Piles Under Cyclic Loading,
2023
College of Civil Engineering, Hunan University of Technology, Zhuzhou, Hunan 412007, China
Dynamic Response And Characteristics Of Tapered Rigid Core Composite Cement- Soil Piles Under Cyclic Loading, Jie He, Duan-Wei Guo, De-Xin Song, Meng-Xin Liu, Lei Zhang, Qi-Feng Wen
Rock and Soil Mechanics
Tapered rigid core composite cement-soil pile is an emerging type of composite pile. In order to investigate its bearing behavior in engineering applications such as highways and railways under long-term cyclic loading, model tests were conducted on four composite piles with different pile core wedge angles, static loading ratios and cyclic loading ratios. The ultimate bearing capacity under static loading as well as the cumulative settlement, pile axial force distribution, tip resistance and side friction resistance were evaluated. The results indicated that the bearing capacity of tapered inner core composite piles under static loading was better than that of constant …
Disintegration Characteristics And Mechanism Of Dispersive Soil Modified By Si/Ca Compound System,
2023
College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China,
Institute of Geotechnical Engineering /Museum of Problematic Rock and Soil, Northwest A&F University, Yangling, Shaanxi 712100, China
Disintegration Characteristics And Mechanism Of Dispersive Soil Modified By Si/Ca Compound System, Yi-Fei Liu, Ze-Fan Bu, Dong-Ting Cai, Heng-Hui Fan, Zhuo Zhang, Han Ru, Juan-Li Ju
Rock and Soil Mechanics
Dispersive soil has the characteristic of being dispersed and lost when encountering water. In engineering practice, lime and cement are often used to modify dispersive soil, but doing so often has such problems as environmental pollution. The Si/Ca compound system composed of nano silica sol and calcium chloride is selected as the modified material for dispersive soil. The effect of the modification is studied by pinhole test, mud ball test, and dispersion and disintegration test. The mechanism of dispersive soil modified by Si/Ca compound system is explored by physical and chemical properties tests. The results show that the dispersibility of …
Infiltration Characteristics And Deformation Mechanism Of Rainfall-Induced Landslides In Three Gorges Reservoir Area Based On 1d And 2d Model Tests,
2023
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang, Hubei 443002, China,
College of Civil Engineering & Architecture, China Three Gorges University, Yichang, Hubei 443002, China,
Badong National Observation and Research Station of Geohazards, China University of Geosciences, Wuhan, Hubei 430074, China
Infiltration Characteristics And Deformation Mechanism Of Rainfall-Induced Landslides In Three Gorges Reservoir Area Based On 1d And 2d Model Tests, Li Wang, Fang-Yun Nan, Shi-Mei Wangi, Yong Chen, Xiao-Wei Li, Zhi-Hong Fan, Yu-Shan Chen
Rock and Soil Mechanics
Shallow deformation of ancient landslides induced by heavy rainfall is the most serious geological disaster in China's Three Gorges Reservoir Area (TGRA). It is important to explore the infiltration characteristics and its shallow deformation mechanism caused by heavy rainfall. In this study, the rainfall-induced landslide of the TGRA was selected as the research object, and the distributions of the soil permeability coefficients for rainfall-type landslide were summarized. Considering the effects of heavy rainfall, one-dimensional (1D) soil column infiltration test and two-dimensional (2D) landslide model test were conducted to study the infiltration characteristics of landslide soil and the corresponding shallow deformation …
Evolution Mechanism Of Deformation And Failure Of Rock Slope With Controlling Fissure Through Transparent Physical Model Experiments,
2023
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China,
University of Chinese Academy of Sciences, Beijing 100049, China
Evolution Mechanism Of Deformation And Failure Of Rock Slope With Controlling Fissure Through Transparent Physical Model Experiments, Xian-Lun Leng, Chuan Wang, Qian Sheng, Wen-Jun Song, Jian Chen, Zhan-Rong Zhang, Fei Chen
Rock and Soil Mechanics
The deformation and failure evolution process of rock slope during disaster incubation period is controlled by internal long fissures (controlling fissures), and the evolution mechanism is of great significance for the prevention of landslide disasters. Based on the transparent physical model experiment technology, two typical rock slopes with controlling fissures (one with a steep fissure in the upper part of slope and the other with a gently inclined fissure in the lower part) were selected as the objects, and the evolution process of deformation and failure inside the slopes was studied through physical model experiments using the self-developed equipment. The …
Mechanical Properties Of Sand 3d Printed Rock-Like Samples Based On Different Post-Processing Methods,
2023
School of Civil Engineering, Chang’an University, Xi’an, Shaanxi 710061, China
Mechanical Properties Of Sand 3d Printed Rock-Like Samples Based On Different Post-Processing Methods, Wei Tian, Xiao-Hui Wang, Wei Yun, Xu Cheng
Rock and Soil Mechanics
3D printing, a rapid prototyping technology, has great potential for applications in laboratory rock tests, but the low strength and stiffness of 3D printed samples have been one of the key problems that need to be addressed. In order to find a way to enhance the strength and stiffness of 3D printed rock-like samples, GS19 sand and furan resin were selected as printing materials, and sand 3D printed rock-like samples were used as research objects. Based on this, the samples were post-processed using three different methods: vacuum infiltration, low-temperature treatment, and combination of infiltration and low-temperature. Uniaxial compression tests were …
Creep–Fatigue Constitutive Model Of Salt Rock Based On A Hardening Parameter,
2023
State Key Laboratory for the Coal Mine Disaster Dynamics and Controls, Chongqing University, Chongqing 400044 China,
School of Resources and Safety, Chongqing University, Chongqing 400044 China
Creep–Fatigue Constitutive Model Of Salt Rock Based On A Hardening Parameter, Jin-Yang Fan, Lu-Xuan Tang, Jie Chen, Zhen-Yu Yang, De-Yi Jiang
Rock and Soil Mechanics
Salt rock has been recognized as an ideal medium for energy storage or oil and gas storage because of its good creep and self-healing characteristics. Accurate characterization and prediction of the complex mechanical behavior of salt rock is the basis for ensuring the safety of underground space utilization project of salt caverns. Based on proposed parameters of hardening and other characteristic factors, in this study, a new creep–fatigue constitutive model is developed for salt rock considering complex loading and unloading paths. Based on the dislocation mechanism of salt rock deformation, hyperbolic damping elements are introduced as state variables to characterize …
Applicability Of Power-Law Stress-Strain Model For Coral Sand Under Earth Fills Stress Path,
2023
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, Hubei 430070, China
Applicability Of Power-Law Stress-Strain Model For Coral Sand Under Earth Fills Stress Path, Ji-Ru Zhang, Yan-Jun Zheng, Wei-Ke Peng, Lei Wang, Jing-Xin Chen
Rock and Soil Mechanics
Coral sands are commonly used in hydraulic fill foundations and as subgrade fill in the construction of islands and reefs. The stress paths followed by soil consolidation or filled subgrade are characterized by K0 consolidation or constant stress ratio stress path. It is necessary to develop a computational model that reflects the effect of stress path on deformation in order to accurately estimate soil deformation during the filling process. Based on the generalized Hooke's law, a nonlinear elastic model in the form of a power function is proposed to describe the stress-strain curve of coral sand, and the functional expression …
Mechanical Properties Of Fractured Sandstone After Cyclic Thermal Shock,
2023
Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University, Chongqing, 400045, China,
School of Civil Engineering, Chongqing University, Chongqing, 400045, China
Mechanical Properties Of Fractured Sandstone After Cyclic Thermal Shock, Man Li, Xian-Shan Liu, Yu-Hua Pan, Shi-Hao Qiao, Zi-Yu Hao, Lei Qian, Xiao-Lei Luo
Rock and Soil Mechanics
The stimulation of thermal reservoirs in sandstone and its long-term stability evaluation are of great significance to the development of geothermal energy. In this paper, the mechanical properties of fractured sandstone under 0–8 cycles of thermal shocks are studied. The experimental results show that the P-wave velocity, uniaxial compressive strength (UCS) and elastic modulus of fractured sandstone all decrease gradually with the increase in the number of thermal shocks under two types of cooling methods. Compared with the cooling method in the water, the natural cooling method in the air causes less damage to the mechanical properties of fractured sandstone. …
Understanding The Hydromechanical Effects Of Extreme Events To Improve The Performance Of Infrastructure Foundations,
2023
Clemson University
Understanding The Hydromechanical Effects Of Extreme Events To Improve The Performance Of Infrastructure Foundations, Siddharth Marathe
All Dissertations
Extreme hydroclimatic events like heavy rainfall, flooding, and prolonged drought can potentially cause the failure of infrastructure foundations, leading to socio-economic losses. The objective of this dissertation is to understand the deformation and bearing capacity behavior of drilled shafts subjected to extreme hydroclimatic events, including heavy rainfall, prolonged drought, and earthquake. The Finite Element Method (FEM) results show that during rainfall, the drilled shaft settled caused by a decrease in the porewater pressure in the sand leading to a decrease in the axial bearing capacity. The axial force variation from an experimental investigation showed good agreement with the FEM. The …
Investigation Into The Load Transfer Mechanism Of Trees To Develop An Innovative Foundation Configuration Using 3d Finite Element Modeling,
2023
Clemson University
Investigation Into The Load Transfer Mechanism Of Trees To Develop An Innovative Foundation Configuration Using 3d Finite Element Modeling, Kaleb Boland
All Theses
This study was inspired by a tree’s reliance on its root system that enables it to withstand a natural disaster, such as an extreme hydroclimatic event or hurricane. This curiosity has led to an investigation into what makes this possible, developing a new and innovative foundation configuration for infrastructure systems, and a new possible construction material and method. This study provides results on a material that does not have conventional testing procedures or standards: a tree root. The trees studied are common to the upstate of South Carolina, which are Pine, Sweetgum, and White Oak. According to the results, on …
Evaluating The Feasibility Of Using Strain Measured During Sinusoidal Rate Pumping Tests To Characterize An Aquifer,
2023
Clemson University
Evaluating The Feasibility Of Using Strain Measured During Sinusoidal Rate Pumping Tests To Characterize An Aquifer, Riley Blais
All Theses
Pumping tests with sinusoidal variation in pumping rate have been proposed as a method for improving aquifer characterization. These tests can interrogate a larger aquifer volume than slug tests and they can be more sensitive to small variations in drawdown. Current methods of using sinusoidal variations of rate are based on measuring pressure signals from the reservoir or aquifer, which requires access to monitoring wells. An alternative approach has been developed that measures the strain in the vadose zone instead of pressure in the reservoir. An instrument has been developed at Clemson University that can measure small strains using optical …
Deformation And Load Transmission Mechanism Of Prestressed Reinforced Embankment Subjected To Rockfall Impacts,
2023
School of Civil Engineering, Chongqing University, Chongqing 400045, China,
Department of Architectural & Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China
Deformation And Load Transmission Mechanism Of Prestressed Reinforced Embankment Subjected To Rockfall Impacts, Shu-Wen Ma, Liang Lu, Zong-Jian Wang, Jing-Tian Wang, Lan-Xing Li
Rock and Soil Mechanics
The prestressed reinforced soil structure was proposed to solve the problem of large-area depressions of soil highways under rockfall impacts in remote mountain areas. Comparative model tests for prestressed reinforced soil embankment and traditional soil embankment were conducted to explore the deformation performance, mechanical response, and load transmission mechanism of both embankments under rockfall impacts. The results show that the size of pits formed in prestressed reinforced soil embankment is significantly smaller than that in traditional soil embankment, which reflects the good impact deformation resistance of prestressed reinforced soil embankment. The embankment stiffness increases with the increase of impact times, …
Stress Jumping Of Elastic-Brittle Circular Coal Roadway And Prediction Model Of Rock Burst,
2023
China National Coal Group Corporation, Beijing 100120, China
Stress Jumping Of Elastic-Brittle Circular Coal Roadway And Prediction Model Of Rock Burst, Shu-Wen Wang, Wen-Jun Ju, Chun-Hui Zhang, Shi-Jie Su, Chuang Lu
Rock and Soil Mechanics
In order to predict the rock burst disasters of coal roadway, the coal with bump tendency is regarded as a perfectly elastic-brittle material, and the mechanical model of circular coal roadway is established to analyze the distribution characteristics of stress and deformation energy density of surrounding rock of coal roadway, and then the rock burst prediction model of coal roadway is established to predict the rock burst disaster of coal roadway. The results show that the tangential stress and deformation energy density of the surrounding rock of elastic-brittle coal roadway jump at the interface between the elastic zone and the …
Excavation Response Analysis Of Prefabricated Recyclable Support Structure For Water-Rich Silt Foundation Pit,
2023
School of Civil Engineering, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China,
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong 519080, China,
Guangdong research center for underground space exploitation technology, Guangzhou, Guangdong 510275, China
Excavation Response Analysis Of Prefabricated Recyclable Support Structure For Water-Rich Silt Foundation Pit, Rui-Song Wang, Cheng-Chao Guo, Pei-Yuan Lin, Fu-Ming Wang
Rock and Soil Mechanics
The prefabricated recyclable support structure provides a new green support system with economic security, functional coordination and sustainable development for the development of underground space. The physical model test of the foundation pit of a pipe-jacking working well in Zhengzhou city is carried out based on the similarity theory. A three-dimensional fluid-solid coupling model that can differentiate the deformation difference between rigid and flexible components in the support system is established by using the ABAQUS software. The stress and deformation characteristics of support structure in the process of dewatering and excavation are analyzed. The influences of dewatering and excavation on …
Long-Term Deformation Test And Model Study Of One-Dimensional Consolidation Of South China Sea Coral Mud Under Graded Loading And Unloading,
2023
Key Laboratory of Geomechanics and Embankment Engineering of Ministry of Education, Hohai University, Nanjing, Jiangsu 210098, China
Long-Term Deformation Test And Model Study Of One-Dimensional Consolidation Of South China Sea Coral Mud Under Graded Loading And Unloading, Yang Shen, Jue Deng, He Weng, Long Yang
Rock and Soil Mechanics
South China Sea coral mud is a calcareous ooze of marine rock and soil formed by the accumulation of bones and debris after the death of coral groups, which has special engineering properties. It is significant to investigate its time dependent long-term nonlinear deformation under load for the construction and long-term stability analysis of dredger fill islands and reefs. Three groups of one-dimensional consolidation compression tests of coral mud with different loading and unloading schemes were carried out, and the influence of stress history on its long-term deformation properties was explored by changing the loading time and loading-unloading loops. According …
Effect Of Rubber–Sand Mixture Gradation On Shear Characteristics Of Mixed Soil,
2023
School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, China
Effect Of Rubber–Sand Mixture Gradation On Shear Characteristics Of Mixed Soil, Fei-Yu Liu, Hao-Ze Li, Jun Fu, Hong-Lei Sun
Rock and Soil Mechanics
To study the shear characteristics of rubber–sand mixtures, the effects of four rubber–sand mixture gradations (one type of gap gradation, two types of continuous gradations, and one type of open gradation), three rubber contents (10%, 30%, and 60%), and three vertical stresses (30 kPa, 60 kPa, and 90 kPa) on the strength and volumetric change characteristics of rubber–sand mixtures were investigated by using a large-scale laboratory direct shear apparatus. Then, the discrete element models of pure sand and rubber–sand mixtures were established according to the same gradation and rubber content. The intrinsic mechanism of rubber–sand mixtures was explored from the …
