Browsing by Author "AJAO, KABIRU SULEIMON"
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Item Combustion characteristics of fuel briquettes made from charcoal particles and sawdust agglomerates(Elsevier, 2019-06-25) AJAO, KABIRU SULEIMON; Shuaib-Babata, Y. L; Adeleke, A.A; Ajimotokan, H. A; Ikubanni, P.PThe combustion characteristics of fuel briquettes made from Idigbo ( Terminalia ivorensis ) charcoal particles, pinewood ( Pinus caribaea ) sawdust and their agglomerates using gela- tinized cassava peels were investigated. The charcoal particles and pine sawdust were blended in the mixing ratios of 90:10, 80:20, 70:30, 60:40, and 50:50, respectively and vice-versa. More so, briquettes were produced from pure charcoal particles and pine saw- dust separately for the purpose of comparison with the blended briquettes. The gelatinized binder was 5% of the total briquettes weight. The briquettes were produced using a pres- sure of 5 MPa with a dwelling time of 5 min in a hydraulic briquetting machine. Proximate, elemental compositions and heating value analyses were carried out on the raw charcoal, sawdust, cassava peel, and their briquettes. The results showed that variations in the mix- ing ratios of the bio-residues had significant effects on all the properties investigated. An increase in the charcoal particles led to an increase in the fixed carbon content and heat- ing value of the briquettes. Conversely, higher pine sawdust content in the briquette re- sulted in higher volatile matter content and lower heating value. The briquette made from pure charcoal particles had the highest heating value (24.9 MJ/kg) and ash content (6.0%). Its carbon, hydrogen, and oxygen contents were in the range of 44.6–50.1%, 5.1–5.6% and 34.4–41.5%, respectively. The proximate analysis, elemental composition analysis, and heat- ing values of the produced fuel briquettes depicted that they have better combustion prop- erties when compared to the raw charcoal, pine dust, and cassava peel. Thus, the produced briquettes would serve as good fuel for domestic and industrial applications.Item DEVELOPMENT OF PAVING TILES COMPOUNDED WITH PULVERIZED CORNCOB CHARCOAL(Journal of Production Engineering, 2016-12-03) AJAO, KABIRU SULEIMON; Ohijeagbon, I.O; Adekunle, A. S; Olusegun, S.DThe current trend all over the world is to minimize environmental pollution through wastes recycling. Thus, paving tiles’ specimens of dimensions 198mm x 98mm x 56mm were produced in the laboratory using various mix ratios of granite particles and pulverized corncob charcoal. Wood charcoal dust was used as control and cement as binder. Batching was by volume and a constant water/cement ratio of 0.7 was used. The tiles’ physical and mechanical properties were determined. Results obtained showed that as the percentage of pulverized corncob charcoal in the mixture aggregate increases, the flexural strength, compressive strength and bulk density of the tiles decreases, while a progressive increase was experienced in water absorption for 20% and 15% cement addition. Significant similarities were observed in the properties of experimental tiles produced with addition of pulverized corncob charcoal and those with addition of wood charcoal dust which was used as control. 30% and 10% addition of pulverized corncob charcoal for 20% and 15% cement content tiles respectively were recommended. Recycling of corncob as a constituent material of paving tiles is feasible.Item Impact of Production Methods on Some Engineering Properties of Interlocking Tiles(Faculty of Engineering and Technology, Adeleke University, Ede, Nigeria., 2019-04-10) AJAO, KABIRU SULEIMON; Ohijeagbon, I.O; Adekunle, A.S; Omoniyi, P.O; Adeoye, B.BInterlocking tiles as a good solution to external floor coverings has been one of the choicest in all cities of Nigeria. This research was aimed at examining the effect of various production methods used among artisans within Ilorin metropolis on the physical and mechanical properties of commercially produced interlocking tiles. Also, the laboratory production of the interlocking tiles adopting the commercially used methods was carried out. Results of the physical and mechanical properties of interlocking tiles produced showed bulk density of tiles ranging from 2.04 to 2.26 g/cm3, water absorption capacity ranging from 4.87 to 7.81%. Maximum compressive strength was also observed in interlocking tiles produced using vibration compaction method and an average compressive strength of 20.51 MPa was obtained compared to mortar method with average compressive strength of 13 MPa. Flexural strength for vibration compaction method was peak at 1.25 MPa for 8 mm particle size interlocking tiles and minimum at 0.89 MPa for 4 mm particle size interlocking tiles. Interlocking tiles with 4 mm grain size had the maximum mechanical strength. An efficient and sustainable method of production of interlocking tiles can be adopted and replicated by all commercial tiles