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40 articles for “porosity”
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Enhancing Concrete Sustainability: A Critical Review of Recycled Aggregate Practices
Abstract: The surge in construction material demand, propelled by urbanization, necessitates sustainable wastemanagement strategies. Recycling demolished waste into concrete has gained prominence due toenvironmental concerns and resource depletion. This review consolidates insights gleaned fromvarious studies on the utilization of recycled coarse aggregates (RCA) in concrete. Investigationsreveal that water absorption in RCA depends on adhered mortar quality, impacting mechanicalproperties. Various alternative materials and their mechanical performance are explored, highlightingtheir superiority. Studies emphasize …
Published in International Journal of Construction Engineering and Planning · Vol. 10, Issue 1, 2024 · pp. 7–13 Read article
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Study on the Significance of Water Treatment Using Activated Carbon from Palm Bunch Fiber
Abstract: Activated carbon produced from palm bunch fibers was investigated for water treatment with the aim to improve water quality for industrial consumption and not for humans and animal consumption. Dominantly the activated carbon produced from palm bunch fiber was used for treatment of industrial effluent water and the application is environmental friendly. The high alkali concentration in the activated carbon improved the pH level of the treated water from 4.03 …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 6, Issue 1, 2020 · pp. 30–46 Read article
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Effect of Manure on the Physical, Chemical and Biological Properties of Soil
Abstract: Manure is the rotten form of dead plants and animals. It is organic matter that is used as organicfertilizer in agriculture and donate to the fertility of soil by adding organic matter and nutrients, andit can be classified as animal manure, green manure, and compost manure. To meet the nutrientrequirement of crop using organic manures would be an inevitable practice in the years to come forsustainable agriculture since organic manures …
Published in International Journal of Agrochemistry · Vol. 7, Issue 1, 2021 · pp. 7–14 Read article
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Effect of TiO2 on HER Activity of Electrodeposited Zn–Ni Coatings
Abstract: This paper demonstrates the improved electrocatalytic behavior of Zn–Ni alloy coatings for alkaline hydrogen evolution reaction (HER), due to addition of TiO2 nanoparticles into the bath. Zn–Ni alloy coatings have been electrodeposited galvanostatically on copper, with wide compositional range (2.31–7.91 wt. % of Zn) at different current densities (c.d.) between 2.0 and 5.0 A dm-2. The electrocatalytic behaviors of all coatings have been studied for alkaline HER in 1.0 M …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 3, Issue 1, 2017 Read article
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Corrosion Protection of Copper Metal by Nanocoating in Nitrogen dioxide Environment
Abstract: Nitrogen dioxide is an acidic gas. It absorbs moisture to produce nitric acid. It creates corrosive medium for copper metal. It forms corrosion cell on the surface of copper and accelerate corrosion reactions. The corrosion cell formation is written as: Cu|Cu2+||H+|H2 thus corrosion reactions start and copper is oxidized into Cu2+surface and it is oxidized into Cu2+ whereas H+ ion is reduced into H2. Nitric acid environment copper exhibits galvanic, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 1, 2022 · pp. 1–11 Read article
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Monitoring Fungi Transport Influenced by Heterogeneous Porous Sand Gravel Formation in Coastal Area of Port Harcourt
Abstract: This paper monitors the transport of fungi concentration in sand gravel formation, the formation were observed to develop heterogeneity in porous deposited strata, the migration process of fungi were observed from the simulation values through graphical representation, fluctuation of fungi concentration were experienced on the process of migration in exponential phase, the deposition of micronutrients were found to be under fluctuation in the soil thus affect the growth rate of …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 1, 2018 · pp. 49–57 Read article
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Effect of Colloidal Nanosilica on High Strength Rice Husk Ash Concrete
Abstract: Nowadays, supplementary cementitious materials (SCMs) are used in concrete because it reduces CO2 emission during. The husks, which are production of cement, reduces cement contents, improve workability, increase strength and enhance durability. Pozzolanic reaction takes place when siliceous or aluminous material comes in contact with calcium hydroxide in the presence of moisture to form compounds possessing cementitious properties approximately 50 percent cellulose, 30 percent lignin and 20 percent silica, are …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 33–43 Read article
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Predicting Dispersion Rate of Nitrobacter Pressured by Potassium Deposition in Silty Clay Formation at Wetland Area of Port Harcourt
Abstract: This study predict the dispersion rate of Nitrobacter in silty clay, the study were developed to determine the rate of dispersions under the pressure of phosphorus in the study area, coastal deposition were observed to develop lots of Nitrobacter contaminant in the coastal environment, investigation carried out by other experts proof abortive in monitoring and evaluation of dispersion rate in the costal location, based on this factors, it becomes imperative …
Published in International Journal of Water Resources Engineering · Vol. 4, Issue 1, 2018 · pp. 45–51 Read article
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Corrosion Protection of Rebar steel in Ocean Atmosphere
Abstract: Rebar is an important engineering metal. It is used in construction of housing, bridge and other infrastructures works. It is surround with concrete for strengthen building block components. The concentration of chloride ions in ocean atmosphere is higher so it produces hostile environment for rebar steel. The lots of porosities are available on the outer surface area of concrete so chloride ions enter inside by osmosis or diffusion process. It …
Published in International Journal of Energetic Materials · Vol. 8, Issue 1, 2022 · pp. 1–11 Read article
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Comparative Study of the Nature of Slag in the Formulation of Concrete Pavers
Abstract: The steel mill generates about 8000 tons/year of slag by transforming scrap metal to produce more than 60000 tons/year of wire rod and steel reinforcing bars. These co-products are stored or used for backfill. With this almost inexhaustible slag deposit, Morocco has a valuable resource thanks to its high content of silicates, lime and metal oxides. This has led to the attempt to valorize it in the manufacture of paving …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 2, 2022 · pp. 12–27 Read article
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Synthesis & Characterization of Fe3O4 Nanoparticles for Thermal Sensing Application
Abstract: n this work, Synthesis and characterization of magnetite (Fe3O4) nanoparticles by the co-precipitation method has been done. These nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), UV-Visible spectroscopy (UV) and Thermogravimetry analysis (TGA/DSC). SEM image show morphology and porosity of material. The nanoparticles show quasi-spherical morphology with mean size around 37 nm. The XRD and FTIR confirmed the functionalization of the Fe3O4 nanoparticles. …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 3, Issue 2, 2017 · pp. 10–19 Read article
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Study of Mechanical Properties of Aluminum Nanocomposites using Auto Ignition Technique
Abstract: Al2O3 - high ZrO2 nanocomposite was synthesized by auto-ignition technique using metal nitrate and citric acid with a ratio of citrate: nitrate equal to 1:1.5. The precursor zirconium oxynitrite was derived from precipitation of zirconium oxycloride followed by dissolution of gel in nitric acid. The thermal decomposition behaviour of the gel was studied in order to study the decomposition behaviour and to determine the crystallization temperature. The effect of calcination …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 3, Issue 2, 2017 · pp. 36–42 Read article
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Synthesis, Structural and Thermal Properties of Nanoporous Silica Aerogels
Abstract: Aerogel is a pellucid that has varieties of permeable and fabricated solid materials with remarkably low density. It has an exceptional thermal insulation and its structure varies from analogous to foamed polystyrene during solid state. Aerogels are considerably the lightest when solid due to presence of air by volume, which is around 99.8%. For extracting aerogels, air or other specific types of gas are used; heat therapy is also used …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 4, Issue 1, 2018 · pp. 1–7 Read article
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Bauschinger Effect on Micro-Lattice of Ti-6al-4v Implants by Using Finite Element Analysis
Abstract: This research's primary objective is to apply the Bauschinger effect to develop a micro-lattice of titanium alloy implants using nonlinear finite element analysis. In orthopedics, micro-lattice cellular Ti-6Al-4V designs with controlled porosity and pore sizes that are good for tissue ingrowth and biological mechanisms are often used. In this investigation, CAD models of various unit lattice structures were generated using Intra-Lattice software, incorporating design parameters such as strut length, strut …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 9, Issue 1, 2023 · pp. 18–24 Read article
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Sliding wear behavior of plasma sprayed NiCrAlY-WC based composite coatings on AA5083 alloy
Abstract: WC based coatings was deposited by thermal spray process have been extensively used in industrial application to counter abrasive type of wear. In this study, for the first time NiCrAlY-WC based composite coatings were deposited on AA5083 substrate by plasma sprayed coating technique. The composite coatings were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and microhardness. Sliding wear behavior of coated and uncoated samples was carried out on …
Published in International Journal of Composite Materials and Matrices · Vol. 4, Issue 2, 2018 · pp. 21–26 Read article
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Aerogel to Study Nano-composite
Abstract: This article has linked to economic aerogel utility of build as by apply of thermal insulation from high and low temptation than usual subscription. Aerogel for building construction always esteemed to be damp proof reticulated architected formation. Space mission is inclusive afterwards as an energy absorber. Typified composite form mostly subjected to class as notified form after solidification on drying gelatinous composes from carbon, clay and silica. Multifunctional material characteristics …
Published in International Journal of Polymer Science and Engineering · Vol. 7, Issue 1, 2021 · pp. 1–10 Read article
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Hardened Steel an Appliance with Low Degeneration
Abstract: Combination of high hardness, toughness, and strain hardening capacities with reasonable ductility have privileged Hadfield steel in sectors such as mining, transportation, military, agricultural and earthmoving equipment. Micro- porosities formation during casting by last solidifying liquids at inter-dendritic spaces in directional solidification have been insidious crack initiators during service exposure. Particulate penetration resistant wear part surfaces for secondary and tertiary crushers are found to add chromium and vanadium prone to …
Published in International Journal of Mechanics and Design · Vol. 5, Issue 2, 2019 · pp. 56–60 Read article
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Analysis of Physical Properties and Fabrication of Silicon Carbide, Graphite and Fly Ash Reinforced Metal Matrix Composites
Abstract: In the present study, a modest effort has been made to produce aluminium based silicon carbide particulate MMCs with an objective to develop a conventional low-cost method of producing MMCs and to acquire homogenous dispersion of ceramic material. To achieve these objectives step-mixing method of stir casting technique has been adopted and subsequent property analysis is performed. Al 6351 has been reinforced by silicon carbide, graphite and fly ash material, …
Published in International Journal of Manufacturing and Materials Processing · Vol. 3, Issue 1, 2017 · pp. 16–21 Read article
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CFD Analysis and Modification of Muffler of 1067 cc4 Cylinder Inline Engine for Better Performance
Abstract: Back pressure is one of the important parameter which determine the performance of the muffler. Pressure drop of the exhaust system includes losses due to piping, silencer, and termination. The most critical mechanical factor regarding backpressure of any commercial modified and available muffler is cross flow perforated tube in which the diameter of the perforated tube hole and porosity of the perforations are most critical. In this paper, the objective …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 3, Issue 1, 2017 · pp. 40–46 Read article
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Friction Stir Processing & Aging on Fatigue Properties of Different Alloy: A Review
Abstract: The FSP process is a thermo mechanical processing techniques which is carried out by means of pin tool that will heat and mechanically deformed the material. FSP has been developed to produce UFG by applying compressive load with a suitable Tool. To enhance the mechanical properties like strength, fatigue, hardness as well as other properties like optical, electrical, magnetic the microstructure is that decides them. We refine grains by large …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 7, Issue 1, 2021 · pp. 1–8 Read article