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1281 articles for “Mixing”
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Corrosion Inhibition of Mild Steel in Acidic Medium using Essential Oil of Clove (Syzygium aromaticum) as Inhibitor
Abstract: This research work deployed a weight loss technique in evaluating the feasibility and efficiency of using essential oil of clove as corrosion inhibitor due to its anti-oxidant properties. Prepared sample of mild steel was exposed to acidic medium in the absence of inhibitor and the corrosion rate was evaluated. Subsequently, other samples of the same mild steel were exposed to acidic environment in the presence of varied concentrations of the …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 1, 2017 · pp. 30–36 Read article
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Phytoextraction of Lead and Chromium by Leafy Vegetables (Lettuce, Kale and Swiss Chard)
Abstract: This research was carried out to assess the accumulation of Cr and Pb in leafy vegetables (lettuce, kale and Swiss chard) in their harvestable part and root from artificially polluted soil with Pb and Cr. Soil sample was characterized for its pH, organic matter (OM), cation exchange capacity (CEC), electrical conductivity (EC) and texture. Soil sample digested by mixture of HNO3 and HClO4 was analyzed. Pb accumulation in shoot was …
Published in Journal of Catalyst & Catalysis · Vol. 3, Issue 3, 2016 · pp. 26–36 Read article
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CuO/TiO2 Nanocomposites: Effect of Calcination on Photocatalytic Hydrogen Production
Abstract: Hydrothermally synthesized TiO2 nanorods were subjected to calcination from 350 to 550 °C and tested their catalytic performance for hydrogen (H2) production in aqueous glycerol solution under solar irradiation. High rate of H2 evolution ca.300 µmol.h−1.g−1cat was recorded with TiO2 nanorods calcined at 500 °C. The nanocomposites were prepared by varying Cu-loading 0.1 to 2.0 wt% and activated at 350 or 500 °C. About 25 folds enhancement in H2 production …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 2, 2014 · pp. 13–20 Read article
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Review on: Heterogeneous Solid Base Catalyst Production from Waste Animal Bone as Transesterification of Jatropha Oil
Abstract: Biodiesel is produce mainly by transesterification, reacting vegetable oils or animal fats with monohydric alcohol in presence of a catalyst. The transesterification reaction is affected by various parameters. One of this parameter is catalyst type. Generally, catalysts used in transesterification reaction can be divided into three categories: homogenous, heterogeneous and enzymes. Heterogeneous catalysts offer numerous advantages over homogeneous catalysts as it can easily be separated from reaction mixture and can …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 1, 2020 · pp. 13–23 Read article
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Preparation and Properties of Blends of Thermoplastic Polymer with Thermoplastic Starch
Abstract: Problems in making biodegradable plastics are incompatible between hydrophilic/polar and hydrophobic/non-polar ingredients. Ingredients like compatibilizers were added to improve the compatibility between the two ingredients. The purpose of this study was to determine the effect of thermoplastic potato starch (TPS) content and two compatibilizers (maleic anhydride, MA, and dibutyl maleate, DM) on melt flow behavior, mechanical features (tensile, bending, and Izod impact test), phase morphology, thermal behaviors (DSC, and TGA/DTG), …
Published in Journal of Catalyst & Catalysis · Vol. 9, Issue 1, 2022 · pp. 16–29 Read article
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Effect of Ground Granulated Blast Furnace Slag as Partial Cement Replacement on Compressive Strength of Concrete
Abstract: AbstractThe main objective of this research work is to determine the optimum replacement percentageof GGBS which can be suitably used. To fulfill the objective, various properties of concreteusing GGBS have been evaluated. Mix design has been arrived for M25 concrete. Fineness,specific gravity (cement and GGBS), normal consistency, initial and final setting time andcompressive strength of cement have been found out. Particle size distribution, bulking of fineaggregate, specific gravity, water absorption …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 3, 2017 · pp. 1–10 Read article
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Mechanical Properties of Aerated Concrete
Abstract: Nowadays it is very important to make the concrete economical. Aerated concrete is ordinary concrete that contains controlled amounts of air in the form of microscopic bubbles and having low density as compare to conventional concrete. These intentionally entrained air bubbles are extremely small. By using Air Entraining Agent (AEA), cement, coarse aggregate, fine aggregate and water we create aerated concrete. The experiment is perform on aerated concrete which is …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 3, 2018 · pp. 20–29 Read article
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Innovative Applications of Aerated Concrete– A Review
Abstract: This paper deals with the review of literature regarding the Aerated Concrete. The main aim of the research was to study the application and properties used for paving structure, retaining structures, as a mortar, etc. The papers studied for the project mainly consist of the use of air entraining agent with different materials. For finding the mechanical properties, moisture content, freezing thawing effects, corrosion, etc., different experimental procedures, methods, materials …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 3, 2018 · pp. 13–19 Read article
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STUDY OF GEO-POLYMER CONCRETE MADE BY USING NATURAL RIVER SAND WITH DIFFERENT POZZOLANIC MATERIAL – A REVIEW
Abstract: Geo-polymer is a new research topic in the construction industry in which cement is fully replaced by pozzolanic materials like fly ash, Ground Granular blast furnace slag, Rice husk ash, silica fume and alccofine etc. activated by highly alkaline solutions to act as a binder in the concrete mix. The result of previous experimental work reveals that normal concrete manufactured with natural river sand replaced up to optimum percentage by …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 3, 2018 · pp. 42–50 Read article
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Geotechnical Assessment and Stabilisation of Lateritic Soils in Tarkwa Using Rice Husk Ash for Road Construction Purpose
Abstract: The cost effectiveness of upgrading gravel roads to a sealed standard has challenged road authorities to make optimum use of naturally occurring materials such as laterites as sub-base and base materials. Untreated laterites have presented problems such as pavement swelling and depression in road construction. This research seeks to assess and stabilise the geotechnical properties of some lateritic soils in Tarkwa using Rice Husk Ash for road construction purposes. Lateritic …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 1, 2019 · pp. 6–16 Read article
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Enhancement in Mechanical properties of fly ash based self compacted concrete
Abstract: Conventional concrete offers problems while filling in the complex formwork where high amount of reinforcement present and it is difficult to use vibrator for consolidation of concrete, in such scenarios to overcome the problems self compacted concrete (SCC) becomes more popular in a construction industry. for better durability performance self compacted concrete is generally produce by adding mineral admixture, to ensure SCC the filling ability, passing ability and segregation resistance …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 3, 2019 · pp. 30–34 Read article
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Performance of Polymer Modified Polypropylene Fiber Reinforced Concrete
Abstract: AbstractThe fiber reinforced concrete (FRC) is a composite material essentially consisting of conventional concrete reinforced by random dispersal of short, discontinuous and discrete fibers of specific geometry. The conventional plain concrete possesses high compressive strength, low tensile strength, poor impact strength, ductility, and little resistance to cracking and poor resistance to chemical attack. The presences of micro-cracks at the mortar aggregate interface are responsible for the inherent weakness of plain …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 2, 2019 · pp. 27–36 Read article
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Strength and Durability of Concrete Cubes and Cylinders Wrapped with FRP
Abstract: Experimental were conduct on the distressed reinforced cement concrete compressive element and on the same after they have been retrofitted for rehabitation. Presently, FRP materials are also been started use in construction field in the form of wrapping to enhance the load carrying capacity, shear and flexural strength as well as ductility. This is an experiment based project which deals with strengthening and load deformation relationship of reinforced cement concrete. …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 3, 2020 · pp. 7–13 Read article
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PREDICTING THE COMPRESSIVE STRENGTH OF CONCRETE USING ANN IN MATLAB
Abstract: This research work focuses on the production of Artificial Neural Networks ( ANNs) in the prediction of concrete compressive strength after 28 days. The measurement of the compressive strength of concrete in situ by means of cores cut from hardened concrete is recognised as the most common technique, but the compressive strength of concrete is very difficult to predict because several factors affect it.In this paper , in order to …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 3, 2020 · pp. 46–52 Read article
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Effect of NaOH & Na2Sio3 on GGBS based Geopolymer Concrete
Abstract: This paper presents the experimental studies on the performance of comparison made by making Geopolymer Concrete (GPC) based on Ground Granulated Blast furnace slag (GGBS),using sodium hydroxide (NaOH )and sodium silicate (Na2Sio3) as alkaline activator. This study has proved that the by-product from iron industries, has the potential to produce cement free concrete, commonly known as Geopolymer concrete (GPC), blast furnace slag is gaining attention to be used as a …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 3, 2020 · pp. 21–45 Read article
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The Study on Properties of Concrete with Cement Partially Replaced by Corn Cob Ash
Abstract: In recent times, instead of cement many alternative materials are being used as the binding material in the construction sector. One such binding material that can be used as a partial replacement for cement is corn cob ash. Corn cob is agricultural waste product obtained from maize or corn. Corn cob is the hard thick cylindrical central core of maize. The tests were carried out on the raw materials to …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 1, 2016 · pp. 78–83 Read article
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Low Cost Concrete Block: A Sustainable Solution to Construction Industry
Abstract: In India, construction industry is growing at a fast pace. To fulfill the demand of infrastructure sector, large amounts of building materials are required. As major portion of this construction material is taken by conventional materials; the cost is increasing. At the same time, this is also responsible for depletion of the resources. An effort has been made to give an alternative solution to both the problems. In the present …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 3, 2015 · pp. 68–74 Read article
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Influence of Recycled Coarse Aggregate on Properties of Concrete
Abstract: This study focuses on the influence of recycled coarse aggregate (RCA) on properties of concrete. Five different mixtures of RCA replacement comprising 0, 25, 50, 75 and 100% RCA were used. It was found that workability, saturated bulk density, compressive strength and flexural strength decreases with increase in RCA content in concrete. 100% manually RCA concrete passed the 17 kN/m2 compressive strength limit generally acceptable for concrete work of non-high …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 3, 2013 · pp. 45–53 Read article
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Effect of Silica Fume on Recycled Aggregate Concrete
Abstract: Use of recycled aggregate (RA) in concrete can be useful for environmental protection and in economical terms. Recycled aggregates are the materials for the future. It is a well-known fact that it gives a little lower strength than natural aggregate concrete. Though, if used up to 20% of replacement, it can give almost similar strength as that of natural aggregate concrete. Hence, it is necessary to improve strength of recycled …
Published in Journal of Construction Engineering, Technology & Management · Vol. 2, Issue 1-3, 2012 · pp. 30–41 Read article
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Influence of Mineral Admixture on Compressive Strength of Concrete
Abstract: The current paper shows the results of an investigation focused on the effect of metakaoline (MK) and silica fume (SF) on the compressive strength of concrete. The aim of the study was to investigate the effect of concrete compressive strength containing different percentage levels of metakaoline and silica fume on fresh and mechanical properties of the concrete. Pastes containing 0%, 5%, 10%, 15% and 20% of metakaoline and silica fume …
Published in Journal of Construction Engineering, Technology & Management · Vol. 2, Issue 1-3, 2012 · pp. 42–47 Read article