Article
Chemistry, Physical
Jose Manuel Moreno-Maroto, Jacinto Alonso-Azcarate
Summary: This study thoroughly examined the suitability of the texture triangle developed by USDA for soil classification, analyzing a large number of soil samples from various countries. The evaluation revealed limitations in the USDA classification system, leading to a new proposal that integrates plastic and textural properties for more accurate soil classification.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yiqing Xu, Xianwei Zhang, Gang Wang, Xinyu Liu, Aiwu Yang
Summary: The presence of diatoms gives diatomaceous soil unique geotechnical properties, including abnormally high Atterberg limits. Factors such as diatom content and crushing degree affect the Atterberg limits, with higher diatom content resulting in higher plastic and liquid limits. Crushing diatoms decreases these limits, while pore fluid salt concentration has minimal influence. The study also investigates the microstructure and pore size distribution of diatomaceous soil, revealing that water stored in the special diatom microstructure contributes to the abnormally high liquid and plastic limits.
APPLIED SCIENCES-BASEL
(2023)
Article
Geosciences, Multidisciplinary
M. Lalitha, K. S. Anil Kumar, K. M. Nair, S. Dharumarajan, Arti Koyal, Shivanand Khandal, S. Kaliraj, Rajendra Hegde
Summary: The study analyzed the physical, chemical, and geotechnical properties of five major soils in the Western Ghats of India to understand their influence on landslides potentiality or slope failure processes. It found that highly weathered lateritic soils have lower KCl pH, low cation exchange capacity, and a negative increment pH value, while the Atterberg limits of soils are significantly influenced by CBD iron, sand fractions, and organic carbon.
Article
Geosciences, Multidisciplinary
Dalan Liao, Yusong Deng, Xiaoqian Duan, Chongfa Cai, Shuwen Ding
Summary: Red loam hills with granitic parent material are susceptible to gully erosion under continuous runoff, and Atterberg limits are important indicators affecting soil erosion resistance. The weathering intensity is significantly correlated with Atterberg limits, with zonal characteristics from north to south.
Article
Engineering, Geological
Baochun Zhou, Ning Lu
Summary: The Atterberg limits are empirical indices defining critical water contents of soil-water mixtures between different mechanical states. They are controlled by soil mineralogy, particle size distribution, pore fluid chemistry, and pore structure. The limits are correlated to mechanisms of soil-water interaction and can be quantified through a soil's total adsorptive water content.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Engineering, Environmental
Elizabeth J. Lam, Brian F. Keith, Jaume Bech, Fernando A. Alvarez, Vicente Zetola, Luis H. Pereira, Italo L. Montofre
Summary: Many plant species can accumulate large amounts of metallic elements in their tissues, making them metal hyperaccumulators. This study proposes a new model to categorize plants according to their behavior related to soil concentration increase, using experimental measurements collected from different sources. The model provides a better understanding of plant effectiveness in phytoremediation processes of highly concentrated affected sites.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Engineering, Environmental
Elizabeth J. Lam, Brian F. Keith, Jaume Bech, Maria E. Galvez, Rodrigo Rojas, Fernando A. Alvarez, Vicente Zetola, Italo L. Montofre
Summary: This article proposes a mathematical model to characterize phytoremediation processes in soils contaminated with heavy metals. The model constructs characteristic curves for metal concentrations in both soils and plants based on experimental data from 305 vegetal species. The model considers roots, aerial parts, and shoots of the plant and provides a less complex mathematical formula compared to previous models. Implementation of the model shows promising results, with 90 species identified as potential accumulators and 10 as hyperaccumulators.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Jun Xu, Zhaoming Chen, Yueyue Li, Suhang Dong, Longrui Li, Song Long, Yining Wu, Shengli Wang
Summary: This study investigated the buffering capacity of calcareous agricultural soils and arsenic enrichment by crops after long-term effluent irrigation had ceased. The results showed an increase in CaCO3 content and pH in the soil compared to the period before cessation of irrigation, but still below the background level. The main buffering substance in agricultural soils was found to be CaCO3, which indirectly contributed to the increase in pH. The study highlighted the importance of pH and Fe dissolution in reducing arsenic concentration in the soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
Jose Marcial, Jaroslav Klouzek, Miroslava Vernerova, Pavel Ferkl, SeungMin Lee, Derek Cutforth, Pavel Hrma, Albert Kruger, Richard Pokorny
Summary: Pilot-scale melter testing has shown that the presence of Al and Fe sources in high-level nuclear waste feeds affects the production rate of glass. The chemical form and the particle size of these sources influence the rate of melting by affecting the energy demand for melting and the heat accepted by the cold cap. The particle size of gibbsite controls the rate of alumina incorporation and the dissolution rate of silica particles, which in turn affect the formation of the glass melt. The content of chemically bound water in the Fe source also influences the glass production rate.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Proceedings Paper
Engineering, Civil
Emre Ozturk, Mehmet Turkezer, Emre Duman, Yilmaz Emre Saricicek, Hazal Deniz Kaya, Emre Umut Arica, Onur Pekcan
Summary: In this study, a game was created to visualize the Atterberg limits tests, allowing students to gain hands-on experience and receive continuous feedback. This game was inspired by the COVID-19 pandemic and aims to provide a realistic laboratory experience that can be accessed remotely.
GEO-CONGRESS 2022: ADVANCES IN MONITORING AND SENSING; EMBANKMENTS, SLOPES, AND DAMS; PAVEMENTS; AND GEO-EDUCATION
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Jemal Aliy Gobena, G. Kumar, S. Suppiah
Summary: Stabilization is an important remedial measure for reducing the swelling properties of expansive soil. This study investigated the effects of sawdust ash, crumb rubber, and sawdust on the Atterberg limits of expansive soil, with sawdust ash and crumb rubber being identified as the most effective additive materials.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Engineering, Geological
Zhou Bing-hong
Summary: Soil-water characteristic curves (SWCCs) are fundamental parameters in unsaturated soil mechanics, commonly used to estimate the properties of unsaturated soils. This study proposes a method to estimate the three parameters of the Van Genuchten equation for sandy soils using one-point SWCC measurement and particle size distribution parameters. The results demonstrate the effectiveness of this method.
ROCK AND SOIL MECHANICS
(2022)
Article
Engineering, Civil
Lekan O. Afolagboye, Yusuf A. Abdu-Raheem, Damilola E. Ajayi, Abel O. Talabi
Summary: This study investigated the impact of using soil fractions passing different sieve numbers on consistency limits and Free Swell Index tests. The results showed that soil fractions passing sieve number 200 had higher consistency limits and FSI compared to fractions passing sieve number 40. This suggests that using soil fractions passing sieve number 200 is more suitable for classifying soil as silt or clay.
INNOVATIVE INFRASTRUCTURE SOLUTIONS
(2021)
Article
Engineering, Geological
Thi Phuong An Tran, Delwyn G. Fredlund
Summary: This paper presents the relationship between the Fredlund-Xing (1994) equation and the soil-water characteristic curve, as well as the connection between fitting parameters and anchorpoints that are crucial for interpreting the soil-water characteristic curves.
INDIAN GEOTECHNICAL JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Muhammad Syamsul Imran Zaini, Muzamir Hasan, Ling Sin Yie, Khairil Azman Masri, Ramadhansyah Putra Jaya, Masayuki Hyodo, Michael James Winter
Summary: The application of chemical stabilizers in soil stabilization can reduce negative environmental impact. This study demonstrates the successful enhancement of soil strength by combining SF and ESA as soil stabilizing agents in kaolin soil, offering a route to low-cost and eco-friendly materials in soil stabilization.
JURNAL TEKNOLOGI-SCIENCES & ENGINEERING
(2022)
Article
Construction & Building Technology
Xiaochao Tang, Angelica M. Palomino, Shelley M. Stoffels
ROAD MATERIALS AND PAVEMENT DESIGN
(2016)
Article
Engineering, Geological
Xiaochao Tang, Shelley M. Stoffels, Angelica M. Palomino
GEOTEXTILES AND GEOMEMBRANES
(2016)
Article
Construction & Building Technology
Nicholas T. Plaks, Angelica M. Palomino, Barry E. Scheetz, Gregory D. Braun
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2016)
Article
Engineering, Geological
Bijoy K. Halder, Angelica M. Palomino, Jordan Hicks
CANADIAN GEOTECHNICAL JOURNAL
(2018)
Article
Environmental Sciences
Badal Mahalder, John S. Schwartz, Angelica M. Palomino, Jon Zirkle
Article
Engineering, Geological
Cyrus Jedari, Angelica M. Palomino, Eric C. Drumm, Howard J. Cyr
GEOTECHNICAL TESTING JOURNAL
(2020)
Article
Energy & Fuels
Cyrus Jedari, Angelica M. Palomino, Eric C. Drumm
Summary: The addition of flocculant has a significant impact on the flow behavior and undrained shear strength of fine coal refuse (FCR) slurry. The flocculant contributes to higher flow resistance and shear strength at higher moisture content and void ratio values. Additionally, there is a reasonable correlation between flowability and undrained shear strength.
Article
Geochemistry & Geophysics
Katherine E. Manz, Angelica M. Palomino, Howard Cyr, Kimberly E. Carter
Summary: The study investigated the physical and chemical interactions between fracturing additives and shale particles at high temperatures during natural gas extraction. The experiments showed that treating shale particles with chemical additives can influence the chemistry of flowback fluid. An optimized laser-based Particle Size Analysis method was developed, revealing no difference in particle size across treatments after incubation. This research provides key information on how changing water chemistry is linked to specific fracturing additives and contributes to understanding fluid-rock interactions.
APPLIED GEOCHEMISTRY
(2021)
Article
Engineering, Civil
Badal Mahalder, John S. Schwartz, Theresa M. Wynn-Thompson, Angelica M. Palomino, Jon Zirkle
Summary: This study compares estimates of critical shear stress and erodibility coefficient for cohesive stream banks/beds between an in situ minijet device and a laboratory pressurized conduit flume. The results show that the estimates of critical shear stress are generally consistent between the two devices for the same soils, but there are significant differences in erodibility estimates. The minijet device's multiple-pressure setting method provides more accurate estimations by considering the change in soil properties with depth. Both the conduit flume and minijet device show promising results in reducing the influence of surface subaerial processes on erodibility parameter measurements.
JOURNAL OF HYDRAULIC ENGINEERING
(2022)
Article
Environmental Sciences
Badal Mahalder, John S. Schwartz, Angelica M. Palomino, Jon Zirkle
Summary: The study investigated scour evolution and propagation around a cylinder in natural cohesive sediment under varying flow velocities, finding that higher soil bulk densities lead to shallower scour hole depths and slower erosion rates. Additionally, it was observed that scour depths were similar at the end of each experimental run.
Article
Engineering, Geological
Cyrus Jedari, Eric C. Drumm, Angelica M. Palomino
Summary: Terzaghi's consolidation theory is valid for soft soil consolidation, but the coefficient of consolidation (C-v) for materials with low solids content may change significantly. This study used a spatial and temporal variable C-v to predict the consolidation rate of fine coal refuse. The results suggest that the variable C-v method is more accurate in reflecting the degree of consolidation at shorter times, while a constant C-v value may be useful for estimating the time for greater degrees of consolidation.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2022)
Article
Energy & Fuels
Nuzhath Fatema, Shobha K. Bhatia, Angelica M. Palomino
Summary: Coal ash is a major industrial waste product in the US, and failures in ash impoundments have led to severe environmental damage. This study developed a new flow test to investigate the behavior of different fly ash slurries. The results showed that the composition of fly ash, hydration state, and initial solids content played a significant role in the flow behavior. Most slurries exhibited shear flow, while some demonstrated elongational flow at high solids content. The addition of an anionic polyacrylamide increased the yield stress and decreased the flow of fly ash slurries.
Article
Environmental Sciences
Peter T. Pham, Roberto A. Federico-Perez, Kevin L. Fine, Laura W. Matzek, Kimberly E. Carter, Angelica M. Palomino, Zi-Ling Xue
Proceedings Paper
Engineering, Civil
Cyrus Jedari, Angelica M. Palomino, Eric C. Drumm
IFCEE 2018: INNOVATIONS IN GROUND IMPROVEMENT FOR SOILS, PAVEMENTS, AND SUBGRADES
(2018)
Proceedings Paper
Engineering, Geological
Bijoy Halder, Matthew Bishop, Angelica M. Palomino, Jong-Sub Lee
GEOTECHNICAL FRONTIERS 2017: WASTE CONTAINMENT, BARRIERS, REMEDIATION, AND SUSTAINABLE GEOENGINEERING
(2017)
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)