keyword
https://read.qxmd.com/read/38528093/a-new-index-to-measure-the-uniformity-of-remolded-loess
#1
JOURNAL ARTICLE
Haike Wang, Ken Howard, Jianbing Peng, Hui Qian, Yanyan Gao, Panpan Xu
The uniformity of remolded loess is crucial for engineering stability and in laboratory testing, as it affects physical and mechanical properties. It is important to have an index which can accurately and conveniently evaluate the uniformity of remolded loess. This study demonstrated and verified the feasibility of using hydraulic conductivity (K) as an indicator for evaluating the uniformity of remolded loess through laboratory experiments and theoretical analysis. In laboratory research, nine loess samples under different preparation conditions were meticulously prepared in duplicate, which were divided into three sets according to the whole dry density (WDD) of approximately 1...
March 25, 2024: Scientific Reports
https://read.qxmd.com/read/38528065/validation-of-the-recycled-backfill-material-for-the-landslide-stabilization-at-a-railway-line
#2
JOURNAL ARTICLE
Karmen Fifer Bizjak, Barbara Likar
In mountain areas landslides many times endanger safety of transport infrastructures, and these must be stabilized with retaining wall structures. In this paper the validation of a new composite as a backfill material for landslide stabilization with a large scale demo retaining wall is presented. The new composite was made from residues of paper industry, which uses for its production deinking process. New composite was validated with the laboratory tests, construction of small demo sites and at the end with a large demo retaining wall structure with a length of 50 m...
March 25, 2024: Scientific Reports
https://read.qxmd.com/read/38526605/systematic-review-of-alternative-materials-that-improve-retention-of-potentially-toxic-metals-in-soil-clay-liners-in-waste-disposal-areas
#3
REVIEW
Jéssica Pelinsom Marques, Isabela Monici Raimondi Nauerth, Mariana Consiglio Kasemodel, Valéria Guimarães Silvestre Rodrigues
When soils available for the construction of liners do not display the characteristics necessary for a good performance, mixtures with other materials can be employed for achieving the desired quality. Several researchers have addressed those mixtures from either a geotechnical or a gas diffusion perspective, emphasizing low hydraulic conductivity. However, in recent years, growing attention has been drawn to the ability of liners to mitigate contamination. The literature lacks studies on the use of amendments for soil liners or cover systems to retain potentially toxic metals, which are important inorganic contaminants...
March 25, 2024: Environmental Monitoring and Assessment
https://read.qxmd.com/read/38523195/study-on-large-deformation-of-soil-rock-mixed-slope-based-on-gpu-accelerated-material-point-method
#4
JOURNAL ARTICLE
Bingke Liu, Wen Wang, Zhigang Liu, Ningpeng Ouyang, Kejie Mao, Fuchuan Zhou
This study assesses the effect of stone content on the stability of soil-rock mixture slopes and the dynamics of ensuing large displacement landslides using a material point strength reduction method. This method evaluates structural stability by incrementally decreasing material strength parameters. The author created four distinct soil-rock mixture slope models with varying stone contents yet consistent stone size distributions through digital image processing. The initial conditions were established by linearly ramping up the gravity in fixed proportionate steps until the full value was attained...
March 24, 2024: Scientific Reports
https://read.qxmd.com/read/38518500/investigation-on-trommeled-legacy-waste-from-full-scale-mining-of-old-dumpsites-suitable-for-valorization-or-scientific-disposal
#5
JOURNAL ARTICLE
Debaprakash Parida, G V Ramana, Manoj Datta
The burgeoning interest in resource recovery from old dumpsites has significantly propelled the adoption of Landfill Mining (LFM) in recent years. This study is centred around evaluating the quality of materials recovered from the full-scale LFM activities at two major dumpsites in India, focusing on the valorization potential of the segregated legacy waste. A detailed analysis was conducted on the segregated waste fractions based on particle size (-30 mm, 30 to 6 mm, and -6 mm, as sourced from the sites), employing both batch and column leaching methods across a range of liquid-to-solid (L/S) ratios (0...
March 21, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38509931/applicability-of-waste-foundry-sand-stabilization-by-fly-ash-geopolymer-under-ambient-curing-conditions
#6
JOURNAL ARTICLE
Ali Abdulhasan Khalaf, Katalin Kopecskó, Sarah Modhfar
Recently, utilizing industrial waste in the construction industry has gained significant attention to meet sustainability demands and mitigate the adverse environmental impacts caused by the construction industry. This study evaluates the engineering properties of waste foundry sand as a target material after stabilization with an environmentally friendly stabilizing agent (fly ash geopolymer), focusing on achieving adequate strength under ambient curing conditions as a feasible choice for road bases in geotechnical applications...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38473679/marble-powder-as-a-soil-stabilizer-an-experimental-investigation-of-the-geotechnical-properties-and-unconfined-compressive-strength-analysis
#7
JOURNAL ARTICLE
Ibrahim Haruna Umar, Hang Lin
Fine-grained soils present engineering challenges. Stabilization with marble powder has shown promise for improving engineering properties. Understanding the temporal evolution of Unconfined Compressive Strength (UCS) and geotechnical properties in stabilized soils could aid strength assessment. This study investigates the stabilization of fine-grained clayey soils using waste marble powder as an alternative binder. Laboratory experiments were conducted to evaluate the geotechnical properties of soil-marble powder mixtures, including Atterberg's limits, compaction characteristics, California Bearing Ratio (CBR), Indirect Tensile Strength (ITS), and Unconfined Compressive Strength (UCS)...
March 5, 2024: Materials
https://read.qxmd.com/read/38473638/research-progress-on-the-geomechanical-properties-of-block-in-matrix-rocks
#8
REVIEW
Songfeng Guo, Qianhui Wei, Shengwen Qi, Lei Xue, Bowen Zheng, Hongjian Wang, Jinxuan Li, Shuaihua Song, Ning Liang, Yu Zou, Zhiquan Huang
The differences in geomechanical properties and the uncertainty in the spatial distribution of Bimrock pose significant challenges to the construction and disaster prediction of geotechnical engineering. To clarify the geomechanical characteristics of Bimrock, this paper summarizes the basic concepts and classification methods of Bimrock at home and abroad. It discusses the methods and characteristics of determining the geometric features of Bimrock blocks and explores the influencing factors and laws of failure modes and strength under different stress states of Bimrock...
March 1, 2024: Materials
https://read.qxmd.com/read/38463247/pore-structure-evolution-and-failure-mechanism-of-limestone-in-the-taiyuan-formation-of-the-ordos-basin-under-high-temperature
#9
JOURNAL ARTICLE
Lingfeng Kong, Zhenyong Yin, Yanpeng Chen, Zhen Dong, Jiafang Xu
The study on the destruction of the limestone microstructure after high-temperature treatment has a significant value in the airtightness and safety of underground high-temperature geotechnical engineering. In order to truly simulate the influence of the underground high-temperature environment on limestone, taking seven groups of limestones of the Taiyuan Formation in the Ordos Basin as examples, we carried out a high-temperature (25-1200 °C) heating experiment of limestone in an argon atmosphere. The pore structure of limestone after the high temperature is studied based on scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), porosity, and permeability, and the change in the fractal dimension of the limestone pore structure was discussed based on the thermodynamic fractal theory, combined with X-ray diffraction (XRD) and thermogravimetry differential scanning calorimetry (TG-DSC), the variation of mineral composition with temperature is characterized, and the evolution mechanism of the limestone microstructure under high temperature is discussed...
March 5, 2024: ACS Omega
https://read.qxmd.com/read/38459018/the-influence-of-anthropogenic-regulation-and-evaporite-dissolution-on-earthquake-triggered-ground-failure
#10
JOURNAL ARTICLE
Paula Bürgi, Eric M Thompson, Kate E Allstadt, Kyle D Murray, H Benjamin Mason, Sean K Ahdi, Devin Katzenstein
Remote sensing observations of Searles Lake following the 2019 moment magnitude 7.1 Ridgecrest, California, earthquake reveal an area where surface ejecta is arranged in a repeating hexagonal pattern that is collocated with a solution-mining operation. By analyzing geologic and geotechnical data, here we show that the hexagonal surface ejecta is likely not a result of liquefaction. Instead, we propose dissolution cavity collapse (DCC) as an alternative driving mechanism. We support this theory with pre-event Interferometric Synthetic Aperture Radar data, which reveals differential subsidence patterns and the creation of subsurface void space...
March 8, 2024: Nature Communications
https://read.qxmd.com/read/38448572/small-scale-regional-engineering-geological-study-of-the-czech-republic-evaluating-the-relationship-between-slope-gradients-and-engineering-geological-zones
#11
JOURNAL ARTICLE
Marian Marschalko, Zofia Zięba, Kateřina Růžičková, Jan Růžička, Jan Kubáč, Jolanta Dąbrowska, David Sysala, David Krčmář
The aim of the small-scale regional engineering geological study of the Czech Republic was to evaluate the relationship between slope gradient and engineering geological zones. The research motivation was to determine the average slope gradient, 25%, 50% (median) and 75% quantiles related to the different engineering geological zones. This scientific information is critical from the perspectives of engineering geology, geotechnical engineering, and foundation engineering because an increasing slope gradient evokes the need to create a cut respectively foundation excavation or another excavation in the geological structure, which increases the probability of occurrence of the problem in terms of differential settlement and bearing capacity of the structures...
March 6, 2024: Scientific Reports
https://read.qxmd.com/read/38435736/datasets-of-various-geotechnical-surveys-in-several-arrays-in-the-taipei-basin
#12
JOURNAL ARTICLE
Chih-Chieh Lu, Yuan-Chang Deng, Jiun-Shiang Wang, Jin-Hung Hwang, Chun-Chieh Tseng
The standard penetration test (SPT), seismic cone penetration test (SCPT), and various in-situ seismic tests are commonly utilized for geotechnical site investigations. The investigated data via these tests are widely adopted to capture site characteristics for geotechnical engineering design. However, site characterizations vary in the above in-situ tests, which leads to uncertainties in the corresponding engineering analysis and design. To address these variabilities, this paper meticulously carried out the above-mentioned geotechnical in-situ tests with rigorous supervision at 13 selected sites in the Taipei Basin, yielding several valuable datasets...
April 2024: Data in Brief
https://read.qxmd.com/read/38427175/biodrying-of-municipal-solid-waste-correlations-between-moisture-content-organic-content-and-end-of-the-biodrying-process-time
#13
JOURNAL ARTICLE
Dino Bosilj, Igor Petrovic, Nikola Hrncic, Nikola Kaniski
Biodrying refers to the decomposition of organic municipal solid waste (MSW) under aerobic conditions. This process usually lasts 14 days and requires large amounts of air to be injected into the waste matrix. The efficiency of the biodrying process depends on several geotechnical parameters, including initial moisture content, initial organic content, bulk density, dry density, solid particle density, and porosity. To examine the potential influence of these parameters on the biodrying process, we analyzed 13 biodried MSW samples...
March 1, 2024: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38422848/methane-removal-efficiencies-of-biochar-mediated-landfill-soil-cover-with-reduced-depth
#14
JOURNAL ARTICLE
Dandan Huang, Yuke Chen, Xinyue Bai, Rujie Zhang, Qindong Chen, Ning Wang, Qiyong Xu
Biochar amendment for landfill soil cover has the potential to enhance methane removal efficiency while minimizing the soil depth. However, there is a lack of information on the response of biochar-mediated soil cover to the changes in configuration and operational parameters during the methane transport and transformation processes. This study constructed three biochar-amended landfill soil covers, with reduced soil depths from 75 cm (C2) to 55 cm (C3) and 45 cm (C4), and the control group (C1) with 75 cm and no biochar...
February 28, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38420417/a-laboratory-based-test-procedure-for-the-investigation-of-slaking-induced-changes-in-geotechnical-properties-of-tailing-dam-embankment-materials
#15
REVIEW
Chaminda Gallage, Shiran Jayakody, Tharindu Abeykoon, Dareeju Biyanvilage, Jay Rajapakse
Slaking is a process of material parameters alteration resulting from wetting-drying cycles, changes in overburden stress, and chemical interactions. Tailings Storage Facilities (TSF) constructed with materials prone to slaking may experience breaches, especially during the post-closure period, due to the deterioration of shear strength and permeability characteristics. Rockfill materials, particularly those containing clay components, can undergo various forms of crack formation, leading to disintegration as a result of wetting-drying cycles, stress increments, and intense compaction...
February 29, 2024: Heliyon
https://read.qxmd.com/read/38399174/effect-of-porosity-binder-index-on-strength-stiffness-and-microstructure-of-cemented-clay-the-impact-of-sustainable-development-geomaterials
#16
JOURNAL ARTICLE
Jair de Jesús Arrieta Baldovino, Yamid E Nuñez de la Rosa, Oriana Palma Calabokis
Searching for alternative material options to reduce the extraction of natural resources is essential for promoting a more sustainable world. This is especially relevant in construction and infrastructure projects, where significant volumes of materials are used. This paper aims to introduce three alternative materials, crushed ground glass (GG), recycled gypsum (GY) and crushed lime waste (CLW), byproducts of construction industry geomaterials, to enhance the mechanical properties of clay soil in Cartagena de Indias, Colombia...
February 17, 2024: Materials
https://read.qxmd.com/read/38390115/an-experimental-investigation-on-utilization-of-ladle-refined-furnace-lrf-slag-in-stabilizing-clayey-soil
#17
JOURNAL ARTICLE
Shriful Islam, Sabrin Ara, Junaidul Islam
The contemporaneous world of development and urbanization generates extreme stresses on building infrastructures, and the use of soil as a load-bearing material is a prerequisite for such activity. However, if the foundation soil lacks enough bearing capacity and shear strength and shows excessive settlements, unescapable failures will occur in constructed infrastructures. As such, improvement or stabilization of soft clay soil is crucial before initiating any construction project to limit the potentiality of post-construction faults and damages...
February 29, 2024: Heliyon
https://read.qxmd.com/read/38382666/utilizing-nanotechnology-to-boost-the-reliability-and-determine-the-vertical-load-capacity-of-pile-assemblies
#18
JOURNAL ARTICLE
Zhijun Xu, Zhengquan Wang, Du Jianping, Sami Muhsen, Hamad Almujibah, Nermeen Abdullah, Samia Elattar, Mohamed Amine Kadim, Riadh Marzhosiny, Hamid Assilzadeh
Because of their high electrocatalytic activity, sensitivity, selectivity, and long-term stability in electrochemical sensors and biosensors, numerous nanomaterials are being used as suitable electrode materials thanks to developments in nanotechnology. Electrochemical sensors and biosensors are two areas where two-dimensional layered materials (2DLMs) are finding increasing utility due to their unusual structure and physicochemical features. Nanosensors, by their unprecedented sensitivity and minute scale, can probe deeper into the structural integrity of piles, capturing intricacies that traditional tools overlook...
February 19, 2024: Environmental Research
https://read.qxmd.com/read/38374179/effect-of-multiple-compaction-on-laterite-soil-geotechnical-and-geo-statistical-analysis
#19
JOURNAL ARTICLE
Imoleayo Oluwatoyin Fatoyinbo, Siyan Malomo, Yinusa Ayodele Asiwaju-Bello, Akinola Akintokunbo Bello
Multiple-compaction demonstrates cyclic loading on laterite soils used in highway construction and its effects on engineering properties. The method determines the mechanical stability of derived soils from porphyritic granite, granite gneiss, and charnockite. Fifty-one soil samples were obtained from the horizons of the laterite soil profiles. Four sets of dynamic compactions were carried out on each sample. Index engineering properties such as specific gravity, Atterberg limits, and particle size distribution were investigated before and after multiple-compaction...
February 19, 2024: Scientific Reports
https://read.qxmd.com/read/38308782/environmental-economic-and-social-impacts-of-sugar-cane-bagasse-and-eggshell-wastes-for-soil-stabilization
#20
JOURNAL ARTICLE
Mariana Tonini de Araújo, Suéllen Tonatto Ferrazzo, Nilo Cesar Consoli, Cecília Gravina da Rocha
Sustainability is a core topic for all sectors including geotechnical engineering (e.g., design of foundations, earthworks structures, and pavements for major infrastructure and building projects). Despite being comprised of environmental, economic, and social pillars, most sustainability studies in this area have focused on the first. Furthermore, social impacts and the three pillars integration are little explored. As a result, there is a lack of systemic and holistic assessments of innovative geotechnical alternatives...
February 3, 2024: Environmental Science and Pollution Research International
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