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  • Establishing Threshold Level for Gravel Inclusion in Concrete Production | Ayinde | Innovative Systems Design and Engineering
    other constituents of the concrete were kept constant Two different mix ratios of 1 2 4 and 1 3 6 were employed Sieve analysis was carried out on the aggregates while slump and compaction factor tests were carried out on fresh concrete Compressive and splitting tensile strength tests were performed on hardened concrete Specimens were produced using 150 mm cubes and 150 mm 300 mm cylinders for compressive and tensile strength tests respectively The size analysis results show that the coefficient of uniformity for sand gravel and granite are 2 29 2 95 and 4 07 respectively an indication that the fine and coarse aggregates were well graded The slump and compactive factor increased with increasing gravel content Compressive strength tests showed that 60 40 and 70 30 percentage of granite gravel combination with values of 21 15 N mm 2 and 15 17 N mm 2 respectively for mix ratios 1 2 4 and 1 3 6 at 28 days was quite satisfactory The minimum requirement of 20 N mm 2 and 15 N mm 2 for 1 2 4 and 1 3 6 mix ratio respectively as specified by BS 8110 Part 1 1997 EN 1992 1 1

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6248 (2016-05-01)
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  • Establishing Threshold Level for Gravel Inclusion in Concrete Production | Ayinde | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6248/6377 (2016-05-01)
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  • Evaluation of Some Power Sources and Performance Parameters of a Continuous-Flow Rotary Cassava Chipper | Taiwo | Innovative Systems Design and Engineering
    differences in key performance parameters and total cost of using a Nigerian built continuous flow rotary cassava chipper to chip fresh peeled and unpeeled cassava root tubers when powered by Diesel engine and when powered by an electric motor The machine was found to be most efficient and cost effective when powered by an electric motor and used to chip fresh unpeeled cassava tubers This was when it exhibited the highest chipping efficiency of 86 67 and the least total cost of or US 4 35 per tonne as opposed to the lowest efficiency of 85 17 and highest total cost of US 9 65 tonne when powered by a Diesel engine and used to chip fresh peeled cassava tubers With these results chipping fresh unpeeled cassava tubers with the machine when powered by an electric motor costs almost only 50 of what it costs to chip peeled fresh cassava tubers when powered by a Diesel engine The study has clearly shown that the campaign to ensure regular supply of electricity in Nigerian rural communities where most of the Nation s resource poor cassava processors who constitute majority of the Nation s cassava growers and processors are based must be

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6249 (2016-05-01)
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  • Evaluation of Some Power Sources and Performance Parameters of a Continuous-Flow Rotary Cassava Chipper | Taiwo | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6249/6378 (2016-05-01)
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  • Level of Oil Palm Production Mechanization in Selected Local Government Areas of Oyo and Osun States, Nigeria. | Akande | Innovative Systems Design and Engineering
    Oriola Oluwole Oniya Gbolahan Bolaji Abstract Productivity of any agricultural produce such as oil palm Elaeis guineensis can be enhanced using mechanical means for the removal of drudgery from the entire production processes This study investigates the level of mechanization in the production and processing of oil palm in Oyo and Osun States so as to determine the research needs towards the development of appropriate machines for this purpose Questionnaires were administered and on the field assessments were made to obtain the necessary information The data collected were analyzed with descriptive statistical tools Eight selected local government areas where oil palm production was adjudged to be popular were visited The study revealed that pre planting planting and post planting operations involving crop protection weeding and fertilizer application receive low mechanization Harvesting was carried out completely by manual operations Threshing of fruits was semi mechanized Palm oil extraction processes had approximately 30 of mechanization which was obtained from few palm oil mills Kernel cracking and palm kernel oil extraction had 50 level of mechanization The study concluded that the level of oil palm mechanization in Oyo and Osun States was very low especially the pre planting planting and harvesting operations and

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6250 (2016-05-01)
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  • Level of Oil Palm Production Mechanization in Selected Local Government Areas of Oyo and Osun States, Nigeria. | Akande | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6250/6379 (2016-05-01)
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  • System Dynamics Simulation of Selected Composite Landfill Liners for Leachate Containment | Ojoawo | Innovative Systems Design and Engineering
    A Alabi Abstract The disposal of wastes through landfiling is becoming increasingly acceptable worldwide Its attendant leachate pollution is however a source of concern to the 21 st century environmental engineering researchers This paper therefore focuses on the application of system dynamics modeling technique in simulating the breakthrough times of selected composite liners in order to determine their effectiveness in leachate containment Four 4 composite liners were studied viz High Density Polyethylene HDPE and Low Density Polyethylene LDPE Geotextile and Geonet Geosynthetic Clay Liner GCL and Compacted Clay Liner CCL and Silt and Sand Governing equations coded in Visual Basic computer programming language based on the principles of system dynamics modeling was applied in the determination of retention abilities of the selected liners Notable properties of the liners like Hydraulic Conductivity Permeability Porosity and Hydraulic Head were employed in model validation Other inputs include the Thickness Placement Slope and Insertion Depth of the liners The interrelationship of the properties and breakthrough times was determined through simulation processes using STELLA 9 1 4 software of the composite liners studied HDPE LDPE combination was found to be the most effective with the longest breakthrough time The Geotextile Geonet combination however has the

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6251 (2016-05-01)
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  • System Dynamics Simulation of Selected Composite Landfill Liners for Leachate Containment | Ojoawo | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6251/6380 (2016-05-01)
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