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27 articles for “modified compaction”
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A Study on Soil Stabilization using Cement and Plastic Fibres
Abstract: Soils pose problems to civil engineers in general and to geotechnical engineers in particular. They cause damage to structure founded in them because of their potential to react to changes in moisture regime. Soil stabilization is the process of altering some soil properties by different methods, mechanical or chemical in order to produce an improvement soil material which has all the desired engineering properties. In the present work, an attempt …
Published in Journal of Geotechnical Engineering · Vol. 4, Issue 2, 2017 · pp. 1–8 Read article
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Compaction and Subgrade Characteristics of Clay Soil Modified with Beas Sand, Fly Ash, and Waste Ceramic
Abstract: The most concerning problem today with the thermal power plant is the disposal of fly ash. The use of fly ash as landfill causes great environmental pollution like groundwater contamination since coal contains trace levels of heavy metals. Similarly, waste ceramic too causes great environmental problem. So, there is a need to utilize these materials by exploiting their inherent properties to solve the environmental and disposable problem. This paper brings …
Published in Recent Trends in Civil Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 9–15 Read article
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Reduction of Mutual Coupling Losses for Dual-frequency Patch Antennas Using Modified Microstrip I-Section
Abstract: AbstractIn this paper, a compact design using modified “I” shaped microstrip section between dual frequency patch antenna array to reduce mutual coupling is presented. Problem of performance degradation of an antenna has to be faced because of mutual coupling. The results of simulation show that coupling reduced from –11.3 to –7.91 dB at 2.40 GHz and from –18.3 to –14.70 dB at 4.5 GHz. Description of antenna design and results …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 33–38 Read article
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Economic Importance of Laterite Deposit in Oke-Oyi Area, Ilorin, Nigeria
Abstract: Two soil samples A and B were taken from Oke-Oyi, Kwara state, North Central, Nigeria. The water content of the samples are 5.8% and 6.5 for sample A and B respectively. This shows the variability in water table in the area. The specific gravities values are 2.7 and 2.78 for samples A and B, this is an indicator of inorganic soil. Grain size analysis show the laterite to be sandy …
Published in Journal of Geotechnical Engineering · Vol. 10, Issue 1, 2023 · pp. 33–37 Read article
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Characteristic Studies on Self-compacting Concrete using Nano Silica with Copper Slag
Abstract: The paper examines the possibility of using copper slag as partial replacement of sand and Nano Silica as partial replacement of cement and super plasticizer and Viscosity Modifying Agent are used in self compacting concrete, in order to overcome problems associated with cast-in-place concrete. Self compacting concrete does not require skilled labours. The percentage of copper slag to be added is 10 %, 20 %, 30 % of total weight …
Published in Journal of Industrial Safety Engineering · Vol. 1, Issue 1, 2014 · pp. 1–11 Read article
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Modification of Microstrip Antenna by “Hexagonal Shaped” Metamaterial for Wireless Applications
Abstract: AbstractIn this proposed paper, a split ring “Hexagonal Shaped” metamaterial structure is used to modify the factors of antenna. The compact patch antennas (CPA) are directive and their size is small in surroundings. These antennas are sources to achieve the recent requirements. These antennas are desired to be possessing less return loss, better directivity, higher bandwidth and compact size at the operating frequency when used in any communicating operation. This …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 3, 2018 · pp. 25–29 Read article
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Study of Mechanical Properties of Self-compacting Concrete
Abstract: Self-Compacting Concrete (SCC) is a high performance concrete, it is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Self Compacting Concrete has excellent high resistance to segregation and fluidity ensures a high level of homogeneity, minimal concrete voids and uniform concrete strength, providing the potential for a superior level of finish and durability to the structure. This …
Published in Recent Trends in Civil Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 12–18 Read article
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Prevalence of Dental Fluorosis in Area of Yemen with Above Optimal Level of Fluoride in Drinking Water: An Exploratory Survey
Abstract: Dental Fluorosis is a developmental defect in enamel formation. It is caused by excessive fluoride intake while teeth are developing; during this period (before teeth erupt) dental tissue is very sensitive to fluoride, typically during a child’s first eight years. The aim of this study is to provide the community with sufficient knowledge about the problem and suggest solutions for prevention from it in future. This study was conducted from …
Published in Research and Reviews: A Journal of Dentistry · Vol. 6, Issue 2, 2015 · pp. 15–25 Read article
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Role of Clay Liners in Municipal Solid Waste Landfills: A Review
Abstract: Rapid population growth has significantly increased the generation of municipal solid waste (MSW) in urban and suburban regions. Disposal of MSW in landfills without proper liner systems may lead to leachate migration and subsequent contamination of groundwater and surrounding soils. The use of liner systems at the base of landfills is therefore essential to minimize leachate percolation and protect the environment. Geosynthetic clay liners (GCLs) and compacted clay liners (CCLs) …
Published in Journal of Geotechnical Engineering · Vol. 13, Issue 2, 2026 · pp. 50–56 Read article
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Dual-Band Printed Compact Trident Shaped Monopole Antenna with Inverted L-shaped For Wireless Communication
Abstract: Abstract: In the present work, printed compact trident shaped antenna with inverted L-shaped strip for dual band wireless communication. Structure of antenna is simple, and the size is 34×18 mm2. This modified inverted L-shape will give the required bandwidth with good return loss. The simulated results show the dual band from (2.5–3.2 GHz) and (5.07–5.80 GHz) with the center operating frequency at around 2.9 GHz and 5.48 GHz having reflection …
Published in Journal of Microwave Engineering and Technologies · Vol. 6, Issue 1, 2019 · pp. 13–17 Read article
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A Compact Review on Physical Vapor Deposition Techniques of Thin Films
Abstract: The effectiveness and performance of a material is greatly influenced by its surface properties. It is possible to manipulate and alter these surface characteristics to satisfy the particular characteristics for better results. One way of modifying these properties is by coating that particular surface with thin film. There exist wide number of methodologies for coating a surface or depositing thin films over it. These techniques can be categorized either as …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 2, 2019 · pp. 9–17 Read article
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Ultra-Wideband (UWB) Planar Monopole Antenna Array for Indoor Multimedia Devices
Abstract: AbstractA UWB planar monopole antenna array for indoor multimedia devices is presented. The base work of antenna includes a modified rectangular monopole to cover entire UWB (3.1 to 10.6GHz) and fed with a 50Ω microstrip line. The proposed antenna array is having a compact size of (80*30*1.6mm3) with a spacing of 0.5*lambda between two elements. To exhibit a wider bandwidth, a rectangular cut in the ground plane has been introduced …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 2, 2018 · pp. 28–35 Read article
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Comparative Study of the Mechanical and Durability Performance of Interlocking Concrete Pavement Blocks
Abstract: Interlocking concrete pavement blocks (ICPBs) have emerged as a durable, modular, and sustainable alternative to traditional pavement systems. Their performance depends heavily on the mechanical characteristics of the concrete mix, block geometry, compaction technique, and curing conditions. This review compiles and analyzes research findings related to the strength, durability, structural behavior, and long-term performance of ICPBs produced using traditional and modified concrete mixes. Key parameters evaluated include compressive strength, split …
Published in Trends in Transport Engineering and Applications · Vol. 13, Issue 1, 2026 · pp. 24–30 Read article
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Evaluation of Sustainable Waste Materials in Asphalt Paving Mixtures
Abstract: Generating recycled tires, disposable plastic bottles and waste engine oil are important problem in Iraq and there is need to solve it . The waste materials can be considered as an alternative materials in road pavement technology and the using of these materials would be a solution to converse the environment from pollution in one hand and modifying the asphalt paving materials on the other hand. The two waste materials …
Published in Trends in Transport Engineering and Applications · Vol. 6, Issue 1, 2019 · pp. 12–19 Read article
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Electromagnetic and Dielectric Performance of Polymer–Ceramic Composite Substrates for Fractal-Based IoT-Antenna Fabrication
Abstract: Polymer–ceramic composite substrates play a crucial role in determining the electromagnetic performance, mechanical stability, and thermal reliability of radio-frequency devices. In this work, a polymer-based composite substrate is systematically investigated for its suitability in compact IoT and RFID antenna applications. A fractal-structured antenna is employed as a functional test platform to evaluate the dielectric behavior, impedance characteristics, and radiation efficiency of the composite substrate. Novelty of the proposed reader antenna …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1518–1534 Read article
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Design of Ultra Wideband Square Aperture Shaped Microstrip (ASM) Antenna
Abstract: AbstractA compact coplanar waveguide-fed (CPW) microstrip antenna for ultra-wideband (UWB) wireless communication is presented. The antenna comprises a square aperture (24 mm × 24 mm) etched on the ground-plane of a printed circuit board and a modified rectangular shaped stub, also total size of the antenna is 30 mm × 30 mm. The lower edge of the band is attained by properly decoupling the resonant frequencies due to proper selection …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 2, 2013 · pp. 15–19 Read article
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Beveled Shaped Filtenna for Ultra Wideband Applications
Abstract: AbstractA compact microstrip line fed beveled shaped filtenna is presented for ultra-wideband application. It is intended to work in the frequency range of 3.10 to 11.75 GHz and having the size of 30.5× 25×1.6 mm3. The filtenna consists of a modified three resonators based band pass filter integrated into the feed line of the modified antenna. In addition to this, a modified semicircular like the ground plane is also present. …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 3, 2018 · pp. 1–10 Read article
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Wideband Bandstop Filter Using Triangular SRR-DGS
Abstract: This article presents a dumbbell shaped triangular split ring resonator (SRR) in the design of wideband bandstop filter. Initially, a conventional dumbbell shaped triangular defective ground structure (DGS) is used to realize the single bandstop filters at the frequency of 3.55 GHz. This triangular shaped DGS structure is modified to a new structure to realize a wideband bandstop filter characteristics with the frequency range of 3.3 to 4.5 GHz which …
Published in Journal of Electronic Design Technology · Vol. 8, Issue 1, 2017 · pp. 11–16 Read article
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Resilient Characteristics of Modified Subgrade Soil
Abstract: AbstractThe problems with poor subgrade soil which is considered as the foundation for the flexible pavement regarding the deformation under load repetitions is a major concern for road engineers. The Poor subgrade soil may be improved by stabilization or implication of soil reinforcements. In this work, the pneumatic repeated loading testing techniques has been implemented for assessing the influence of both techniques on the resilient characteristics of subgrade soil. Cutback …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 28–37 Read article
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Novel Technique for the Analysis of Electronic Circuits Including Zener Diodes
Abstract: This paper addresses the analysis of electronic circuits including Zener diodes. It starts with a modified Zener diode model, which is based on expressions involving step-functions, its parameters such as the resistances in both current directions as well as its breakdown (or Zener) voltage. In contrast to the earlier approaches expressing the sharp discontinuities characterizing the step-functions in terms of inverse hyperbolic tangent terms, this paper adopts more concise and …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 3, 2021 · pp. 31–41 Read article