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705 articles for “sil”
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Time History Analysis for an Underground Powerhouse Structure Considering Soil Interaction
Abstract: AbstractThe project deals with the analysis and design of an underground powerhouse constructed on three different soil types (silty, sandy, clay). Though each powerhouse has mostly similar components and machines but the analysis and design of civil structures in a plant are always done with different ideas and optimized techniques. Hence this paper is based on some new and different considerations in analysis and design aspects and optimization. The objective …
Published in Journal of Geotechnical Engineering · Vol. 4, Issue 3, 2017 · pp. 1–6 Read article
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Static and Dynamic Analysis of Foundation considering SSI under different Soils and Vertical Load Conditions using FEM
Abstract: The behavior of foundations when rested upon various types of soil such as loose sand, medium dense sand, dense sand, silty sand and sand and gravel is studied in this project. The effect of soil-structure interaction is also considered during the modelling. The foundation was considered a square type isolated footing with varying vertical loads. Ground motion data for El Centro Earthquake was utilized for the dynamic analysis. Results for …
Published in Journal of Geotechnical Engineering · Vol. 5, Issue 2, 2018 · pp. 8–14 Read article
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A Review on Stabilization of Expansive Soil Using Different Methods
Abstract: Expansive soils are difficult soils for construction purposes because of their cyclic swell/shrink behavior. These soils undergo significant expansion when subjected to an increase in water content or shrink under evaporation condition (when water out). Bulging soils can be improved in several ways. Either by adding materials such as cement, lime, sand and adding river mixture soil. or these soils treated with chemical additives. When added to expansive soils in …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 3, 2019 · pp. 32–40 Read article
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Effect of the Position of Geotextiles on the Strength Characteristics of Subgrade Soil in Bituminous Pavements
Abstract: In the past 20 years, many new road improvement techniques have revolved around the use of geosynthetics. Geosynthetics may be used in those areas where the soil remains saturated part of the year or over clay and moist silty weak subgrade soils. The quality and life of pavement is greatly affected by the type of subgrade, subbase and base course materials. Subgrade soil is the bottom most layer of the …
Published in Journal of Geotechnical Engineering · Vol. 3, Issue 2, 2016 · pp. 12–17 Read article
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CBR Behaviour of Soil Treated with Class ‘F’ Fly Ash
Abstract: Disposal of fly ash available at thermal power stations is not only a serious national issue but also causes endanger to the mankind if not properly utilized and handled. The study aims at making effective utilization of Class ‘F’ fly ash by mixing with soil in suitable proportions and showcasing its usage to be adopted in subgrade as well as subbase components in pavement infrastructures. Silty sand was mixed with …
Published in Journal of Geotechnical Engineering · Vol. 3, Issue 1, 2016 · pp. 33–43 Read article
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Strength of Geopolymer Concrete by Replacement of Fine Aggregate with Waste Steel Slag
Abstract: AbstractThe increased production of Portland cement causes great concern to environment because of its high carbon foot print. Geopolymer concrete is a new invention in the world of concrete in which cement is totally replaced by industrial waste and byproducts like fly ash. Geopolymer concrete is environment-friendly material for construction because of its reduced carbon foot print and also it is found to be durable. In this study, strength and …
Published in Journal of Geotechnical Engineering · Vol. 1, Issue 1, 2014 · pp. 15–19 Read article
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Comparative Study on Stabilization of Expansive Soil using Cement Kiln Dust and Ceramic Dust
Abstract: In India, expansive soils cover about 20% of total land area, these soils increase in volume (swell) during winter season and decrease in volume (shrink) during summer season. Due to this contradiction behaviour many civil engineering structures constructed on expansive soils get damaged severely, out of which pavement is the most because they are lightweight and extend over large areas. Stabilization of Expansive soil is of most importance, since to …
Published in Journal of Geotechnical Engineering · Vol. 1, Issue 3, 2014 · pp. 1–7 Read article
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Slope Stability Problem in the Chittagong City, Bangladesh
Abstract: Chittagong, the major port city of Bangladesh is seriously and violently vulnerable for landslide from geological and geographical point of view for many specific reasons. Along with the steep slope, slope cutting, natural weathering and antecedent rainfall causes for landslide of the city during the rainy season caused by thunderclap of heavy storms. This paper presents a quantitative analysis of slope instability problem of the Chittagong city by technical and …
Published in Journal of Geotechnical Engineering · Vol. 1, Issue 3, 2014 · pp. 13–25 Read article
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A Laboratory Methodological Proposal for “Geotechnical Lime Stabilization of A-4 Soils”
Abstract: This paper establish the beginning of a research process regarding the behavior of soils stabilized with lime. Generally, the geotechnical practice of soils stabilized with lime requires a first step conducted in the laboratory, to attest the features of “natural soils” in order to improve their behavior in term of geotechnical performance and, a second step, carried out onsite with experimental test fields, in order to verify the benefit obtained …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 1, 2021 · pp. 1–11 Read article
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Assessment of Liquefaction Potential Index for Sylhet City considering Maximum and Average Amplification Factor
Abstract: Soil liquefaction often occurs in saturated or partially saturated silty or sandy soil when an earthquake generates dynamic cyclic stress in the soil mass, reducing shear strength and stiffness. This study aims to assess the seismic soil liquefaction hazard potential for Sylhet City using shear wave velocity profiles of 49 boreholes. Factor of Safety (FOS) was evaluated taking into account shear wave velocity and maximum intensity of surface acceleration corresponding …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 2, 2021 · pp. 1–12 Read article
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An Integrated Application of Remote Sensing, GIS and VES for Artificial Recharging at Watershed from South Solapur Taluka, Solapur District, Maharashtra
Abstract: Over growing demand of water has led scientific community to plan augmentation of ground water by various methods. The objectives achieved in present study are to arrest run-off and silt flow, to facilitate infiltration of water. The study area considered is a small Micro Watershed from South Solapur District which is Drought prone zone. The study was an attempt to delineate the possible recharge zone for groundwater and also to …
Published in Journal of Geotechnical Engineering · Vol. 9, Issue 3, 2022 · pp. 1–18 Read article
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Synthesis of low cost artificial sand from fly ash and its application as a filter material
Abstract: The usage of natural river sand is increasing vastly. Geopolymers are materials with three-dimensional alumina silicate structures that have a high mechanical strength and can be used as an alternative to Portland cement. The probability of using Natural river sand can also be replaced with geopolymer synthetic sand. There are many properties which may lead the scarcity of natural river sand they are Because of landslides, tsunamis and erosion. The …
Published in Journal of Geotechnical Engineering · Vol. 9, Issue 3, 2022 · pp. 37–46 Read article
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Probable Causes of Cracks on selected Buildings at Akrowa in Afigya Kwabre District, Ghana
Abstract: This work evaluated the nature of the foundation soils and cracks on twelve representative buildings at Akrowa, in the Afigya Kwabre District near Kumasi in Ghana. Age, material used whether clay/concrete, dimensions of cracks on the buildings and tests for geotechnical parameters of foundation soils such as moisture content, bulk density, specific gravity, particle size distribution, Atterberg limit and direct shear were carried out on soils from four pits dug …
Published in Journal of Geotechnical Engineering · Vol. 10, Issue 3, 2023 · pp. 29–39 Read article
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Nanostructured Cr-WS2 Solid Lubricant Coating for Space Applications
Abstract: Abstract Tungsten disulphide (WS2) is one of the widely used intrinsic low friction materials, which is commonly used in the form of coating. WS2 offers very low coefficient of friction only in non humid conditions. Presence of humidity destroys this property and restricts its utility. Modifying the structure of WS2 by adding certain metals helps in overcoming this limitation and in addition improves the mechanical properties. Further, deposition technique and …
Published in Journal of Instrumentation Technology & Innovations · Vol. 9, Issue 1, 2019 · pp. 12–18 Read article
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Analysis of Braggs Grating for photonics application
Abstract: The plane wave expansion approach was used to optimise reflectance in a Braggs grating on a silicon on insulator structure at wavelength 1.55µm. When the results were compared to the experimental results, it was discovered that they agreed better than any other present results. Aside from the inherent benefits of FBGs, such as low cost, low losses, polarisation insensitivity, and full compatibility with fiber-optic systems, they have demonstrated that by …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 1, 2022 · pp. 32–35 Read article
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Impact of Spacer Engineering on SOI Junctionless FET Performance Using TCAD Simulation
Abstract: In this paper, the impact of spacer engineering on 10 nm gate length planar SOI (Silicon On Insulator) junctionless transistor performance is studied using Sentaurus TCAD simulator. Spacer length and spacer permittivity of the device are taken as two controllable parameters. DC performance metrics, ION, IOFF, ION/IOFF ratio, unity gain frequency (fT) and non quasi static delay (NQS) are investigated for various spacer lengths and spacer permittivity. The simulation results …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 2, 2016 · pp. 42–52 Read article
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Evaluation of Optimal Parameters for Wire EDM Machine on En45A Alloy Steel using Taguchi and Grey Relational Analysis (GRA) Method
Abstract: The core goal of this research paper is to evaluate process parameters of wire electrical discharging machining and to find out the best parameter among the multiple responses given by machine. Wire cut machine is very accurate and precise machine which is actually manufactured to cut those material which have high strength, toughness, and hardness. This machine works on melting property; here spark is generated between the work piece and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 11–21 Read article
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Plunger Technique: A New Approach to Stir Casting AMMC Preparation
Abstract: Metal matrix composites (MMCs) are materials that are highly attractive for large range of hi-tech engineering applications. Keeping this in mind, materials for the present investigation were prepared by a drastically modified stir-casting technique where the usual solid shaft stirrer was replaced by a hollow/tubular spindle-stirring mechanism through which silicon carbide particulates in small cylindrical capsule were introduced to the aluminum-magnesium alloy matrix with the help of a plunger rod …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 2, 2013 · pp. 26–32 Read article
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Breakout Problems Study of Continuous Casting Steel
Abstract: The breakout is one of greatest problems in the continuous casting processes. We can return most of their reasons on the bad control of casting process circumstances, including the chemical composition of the metal, pouring speed and temperature, as well as operation processes control. In this research, the breakout heats had been constrained for the period of ten months, for (ST 52) type steel .From the operating data, remarked that …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 11–21 Read article
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Review and Effect of Acid Treatment on Indian Montmorillonite and Kaolin Clay
Abstract: Clay being the available resource throughout the world and being rich in alumino-silicate compounds is of great importance. This review mainly focuses on the montmorillonite and kaolin clay and includes acid treatment, clay based catalyst and zeolite from montmorillonite and kaolin clay. In this review, effect of acid treatment, Si/Al ratio and conversion of catalyst in reaction is discussed. Indian clay is treated with sulphuric acid and hydrochloric acid, respectively …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 3, 2020 · pp. 8–19 Read article