Department of Civil Engineering
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Item Reliability Assessment Of Heated Rubber Tyre Concrete(Journal of Multidisciplinary Engineering Science Studies (JMESS), 2021-04) Ibrahim, O. A.; Usman, M.; Okeke, K.L.; Adeyemi, F. O.; Ibrahim, S. O.In this study, effort has been made to determine the reliability of heated rubber tyre concrete. The rubber tyre concrete (RTC) was subjected to single temperature load in accordance with the procedure suggested by ISO 834 using Constant Failure Rate (CFR) method. For this, twenty-seven (27) samples were prepared from each series of mix containing tyre fibers of 10 mm width and length in various proportions namely; 0%, 2.5%, 5.0% and 7.5%, with water cement ratio of 0.55. In the view of variations of test results, this study therefore explores the use of rubber tyre concrete as an additional constituent in the conventional concrete. The results indicated that incorporating rubber tyre to concrete provides a reliability level of safety.Item Impact Energy Assessment on Rubber-Tyre Concrete using different Methods on Two- Weibull Parameters(International Journal of Advances in Engineering and Management (IJAEM), 2021-12-12) Ibrahim, A.O.; Adeyemi, F.O.; Umar, Y. K.; Bello, M.; Usman, M.In this study, an attempt was made to investigate the effect of fire on impact resistance of tyre-rubber concrete (TRC), subjected to drop weight test in accordance with the procedure suggested by ACI committee 544. For this, three samples were prepared from each series of mix containing tyre\ fibres of 10 mm width and length in various proportions viz., 0%, 2.5%, 5.0% and 7.5%, with a water cement ratio of 0.55. The results obtained were statistically investigated using Weibull Distribution. The Weibull parameters were determined by three estimation approaches; EPM (Energy Pattern Method), Probability Density Function (PDF) and Method of Moment (MOM). Analysis suggested that the three methods are more effective in estimating the weibull parameters. Though there are less differences. Therefore, designers can choose impact strength design value based on the required reliability.Item DUTIES OF ENGINEERS IN MAINTENANCE OF PUBLIC PHYSICAL INFRASTRUCTURES IN NIGERIA(Glory-Land Publishing Company, 2022) Adeyemi, F.O; Oluwasogo, FestusItem Characterisation and Grading of Four Selected Timber Species Grown in Nigeria in Accordance with Bs 5268(Nigeria Journal of Technology (NIJOTECH), 2021-07-04) Wilson, U.N.; Mohammad, Y.N.; Mohammed, I.S.; Adeyemi, F.O.This study presents a development of strength classes for Vitex doniana, Diospyros mespliformis, Parkia biglobosa and Isoberlinia doka, northern Nigeria timber species in accordance with BS 5268-2 (2002) and NCP 2 (1973). The specimens for the experimental measurements were obtained from timber-sheds in Zaria, Kaduna - Northern part of Nigeria. The laboratory experiments were conducted to determine the physical and mechanical properties of the selected timber species. The specimens were prepared in accordance with BS 373 for small clear specimens for the determination of physical and mechanical properties. Flexural strength properties were determined using three point bending test. Adjustment was made on the mechanical properties at moisture content of 12% and 18% in conformity with BS 5268-2 (2002) and NCP2 (1973) respectively. The laboratory data were analyzed using data analysis tool pack in Microsoft excel 2019 to generate the mean, coefficients of variation and theoretical distribution models which form the uncertainty models. Basic and grade stresses were also computed using experimental failure stresses. The selected timber species were then classified using the grade bending stress, density and mean modulus of elasticity obtained. Vitex doniana, Diospyros mespliformis, Parkia biglobosa and Isoberlinia doka were assigned to strength classes D30, D40, C40 and D30 in accordance with BS 5268-2 (2002) respectively. Similarly, in accordance with the NCP 2 (1973), these species belong to N4, N3, N4 and N3 respectively. The results obtained show that Vitex doniana, Diospyros mespliformis and Isoberlinia doka are hardwoods whereas, only Parkia biglobosa is a softwood specie.Item A Review of Mechanical Strength Properties of Some Selected Timbers in Nigeria(THE INTERNATIONAL JOURNAL OF SCIENCE & TECHNOLEDGE, 2016-02) Adeyemi, F. O.; Jimoh, A. A.; Wilson, U. N.The variation in mechanical properties of eight different timber species was reviewed from the project works on timber carried out in the Department of Civil Engineering, University of Ilorin. Kwara state, Nigeria. These species include Iroko (Chlorophora excelsa), Mahogany (Khaya ivorensis), Fanpalm (Borassus aethoiopum), Ekki (Lophira alata), Opepe (Nauclea diderrichii), Apa (Afzelia, bipindensis), Ayin (Anogeissus leiocarpus), Afara (Terminalia superba). The Annual Book of ASTM Standard Section 4, (D143), method of testing small clear specimens of timber was adopted to evaluate the variation of strength properties of the species from standard speed and dimension specifications. The strength properties reviewed were, compression parallel to grain, compression perpendicular to grain, static bending (flexure) and tensile strength parallel to grain. From the review, it was found that strength of timbers along the grain is far greater than across or perpendicular to grain showing the anisotropic nature of timber. Prior soaking of the specimen before test accounts for reduction in strength. Also deviations from the specified dimensions and speed of testing of specimen will in one way or the other affect the accuracy of strength obtained in the test. It is therefore recommended that strict adherence to the test procedure and specifications should be followed so as to achieve the exact strength values of timbers and that further research work be done on other timbers in order to maximize their usefulness as a construction material.Item TECHNOLOGY ADVANCEMENT AND SUSTAINABLE DEVELOPMENT IN NIGERIA’S EDUCATION SECTOR(Delthom Publishers, 2020) ADEYEMI, Festus Oluwasogo; ODEDINA, Mary J.; AKPODONOR, IghoKester; OLOMO, Olutola O.Item POTABLE WATER DISTRIBUTION SCHEME USING AUTONOMOUS WATER TANKERS FOR LIFE SUSTAINABILITY IN DEVELOPING NATIONS(Delthom Publishers, 2020) OLOMO, Olutola O.; OYERINDE, Iretioluwa M.; AKPODONOR, Igho K.; OBANISOLA, Oluwole O.Item Perceived Effectiveness of Computer–Based Assessment among Engineering Students in Nigerian Universities(JOURNAL OF SCIENCE TECHNOLOGY AND EDUCATION, 2021-09) Adeyemi, F.O; Akpodonor, I. K.; Oyerinde, I. M.; Odedina, M. J.; Olomo, O. O; Obanisola, O.O.; Ogunrinde, S.O.; Bodija, Y. O.; Wilson, U.NThe Computer-Based Assessment (CBA) approach is a popular method to evaluate students’ performance at the tertiary institution level. Despite the varieties of computer-based assessments employed today, there exist biased views, and questions have been raised on its effectiveness in assessing knowledge of some engineering courses. Therefore, the goal of this research is to investigate engineering students’ perceptions about computer based assessment in various Universities in Nigeria, with the aim to determine its effectiveness in assessing knowledge of some courses. In order to achieve this aim, survey questionnaires were designed as research instrument and administered randomly to engineering students from 30 selected Nigerian Universities in all the six geopolitical zones of the federation, who have in one way or the other been assessed via computer based approach. A total of 329 responses were received, and analyzed. Findings showed that engineering students unsatisfied with computer based approach for examinations; students’ responses indicated that the drawbacks outweighed the benefits. Majority of the students expressed their overwhelming preference for the paper-based assessment due to the problems associated with computer- based assessment. This study recommends that University administrators consider paper-based assessment for engineering students and improve the computer interface of systems to accommodate multiple choice tests, short answers, and essays.Item DESIGN, FABRICATION AND AUTOMATION OF A PALM OIL MILLING MACHINE FOR SUSTAINABLE PALM OIL PRODUCTION(Nigerian Universities for Sustainable Development, 2020) AKPODONOR, IghoK.; OLATUNBOSUN, Adeboye; OBANISOLA, Oluwole O.; OYERINDE, Iretioluwa M.; OLOMO, Olutola O.Item ACADEMIC INSTITUTIONS, INDUSTRIES AND THE GOVERNMENT – ROLES IN SUSTAINING THE DEVELOPMENT OF ENGINEERING ENTREPRENEURIAL SKILLS AND COMPETENCE(F.O Adeyemi, I. K. Akpodonor, I. M. Oyerinde, M. J. Odedina, O. O Olomo, O.O. Obanisola, S.O. Ogunrinde, & Y. O. Bodija (2021, August 24-26). Academic Institutions, Industries and the Government – Roles in sustaining the development of engineering entrepreneurial skills and competence., 2021) Adeyemi, F.O; Akpodonor, I.K; Oyerinde, I.M; Odedina, M.J; Olomo, O.O; Obanisola, O.O; Ogunrinde, S.O; Bodija, Y.OThere has been growing concern of high rate of unemployment among engineering graduates, roaming the nation’s streets in search for white collar jobs, despite the fact that entrepreneurial courses have been introduced to the engineering curriculum, as a distinct set of commercial skills and techniques to improve the employability of these graduates. This paper, which draws strength from detailed review of literature, presents views on how the academic institutions, industries and the government can help to reinforce, sustain and consolidate the engineering entrepreneurship programme, with the hope to produce well rounded, morally and intellectually capable engineering graduates with entrepreneurial skills, who could create jobs rather than look for jobs. This will go a long way to reduce the unemployment rate and enhance positive impact on national economic development. Some suggested roles which the academic institutions, industries and government can play in building the skills and competences of the engineering students include: frequent organization of seminars and practical classes or hands-on business activities based on innovative engineering projects, new business development, preparation of business plan, formation of strategic alliances or strong ties outside the university setting to include alumni and local businesses communities that can interface with the entrepreneurial program, mixing students from several engineering departments, and ensuring entrepreneurial courses which relate market needs to the research activities offered by academic institution. Similarly, more funds should be provided by the government for entrepreneurship programs and creation of adequate well equipped entrepreneurship centers across the nation.Item A COMPUTATIONAL MODEL FOR SIMULATING THE GROWTH OF BIOGASPRODUCING BACTERIA FOR PREDICTING PRODUCTION RATE OF SUSTAINABLE AND AFFORDABLE CLEAN ENERGY(2020) Oladokun, Ajibola S; Ogunrinde, Samuel O; Bodija, Yusuf O.; Odedina, Mary J.Item DEVELOPMENT OF AN INFORMATION AND DATA COORDINATION SYSTEM FOR SUSTAINABLE DEVELOPMENT(Ajayi Crowther University Press, 2020) Oyerinde, Iretioluwa M.; Odedina, Mary J.; Adeyemi, Festus Oluwasogo; Obanisola, Oluwolw OItem TECHNOLOGY ADVANCEMENT AND SUSTAINABLE DEVELOPMENT IN NIGERIA’S EDUCATION SECTOR(Ajayi Crowther University Press, 2020) Adeyemi, Festus Oluwasogo; Odedina, Mary J.; Akpodonor, Igbo Kester; Olomo, Olutola OItem BIOGAS PRODUCTION FROM LIGNOCELLULOSIC WASTE MATERIALS(Ajayi Crowther University Press, 2020) Odedina, Mary Jesuyemi; Adeyemi, Festus Oluwasogo; Oladokun, Ajibola Samson; Olomo, Olutola OmobowaleItem Bioconversion of fruit wastes and effects of thermophilic hydrolysis for banana peel digestion(FERVAAP, 2017-07-25) Odedina, Mary Jesuyemi; Saritpongteeraka, Kanyarat; Charnnok, Boonya; Chaiprapat, SumateMethane production potential of tropical fruit wastes were compared by anaerobic digestion assay and stoichiometric Buswell's equation. Methane yields were in the order of banana peel, longan waste, and rambutan waste (330.6, 268.3, 234.6 and 193.2 mLCH 4 /gVS). Their calculated biodegradability related well with structural composition and properties. In continuous system operations on banana peel at feed concentrations 1%TS and 2%TS, mesophilic single stage digester (20-day HRT) failed at 2%TS. Prehydrolysis thermophilic reactor (4-d HRT) was placed as pre-treatment to mesophilic reactor (20-d HRT). Higher biogas and energy yields were obtained and greater system stability was achieved over the single stage digestion. The energy yield of 2510.9 kJ/kgVS was achieved at a feed concentration of 2%TS with thermophilic prehydrolysis.Item Effects of size and thermophilic pre-hydrolysis of banana peel during anaerobic digestion, and biomethanation potential of key tropical fruit wastes(Waste Management, 2017-07-11) Odedina, Mary Jesuyemi; Charnnok, Boonya; Saritpongteeraka, Kanyarat; Chaiprapat, SumateMethane production potential of tropical fruit wastes, namely lady-finger banana peel, rambutan waste and longan waste were compared using BMP assay and stoichiometric modified Buswell and Mueller equation. Methane yields based on volatile solid (VS) were in the order of ground banana peel, chopped banana peel, chopped longan waste, and chopped rambutan waste (330.6, 268.3, 234.6 and 193.2 mLCH 4 / gVS) that corresponded to their calculated biodegradability. In continuous operations of banana peel digestion at feed concentrations based on total solid (TS) 1–2%, mesophilic single stage digester run at 20-day hydraulic retention time (20-day HRT) failed at 2%TS, but successfully recovered at 1.5%TS. Pre- hydrolysis thermophilic reactor (4-d HRT) was placed as pre-treatment to mesophilic reactor (20-d HRT). Higher biogas (with an evolution of H 2 ) and energy yields were obtained and greater system sta- bility was achieved over the single stage digestion, particularly at higher solid feedstock. The best perfor- mance of two stage digestion was 68.5% VS destruction and energy yield of 2510.9 kJ/kgVS added at a feed concentration of 2%TS.