Browsing by Author "Ariyo, Adanikin"
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Item COMPARATIVE ANALYSIS OF USERS PERCEPTION FOR ROAD CONCESSIONING AND TOLLING USING MULTINOMIAL REGRESSION AND ARTIFICIAL NEURAL NETWORK(International Journal of Engineering Applied Sciences and Technology, 2020-02) Ariyo, Adanikin; Alphonsus, Falade Funsho; Oyedepo, Olugbenga Joseph; Adewale Olutaiwo, AdewaleRoads, a predominant means of transportation in developing countries like Nigeria have suffered neglect and are in deplorable conditions due to inadequate funding by the government. However, road concessioning have not been widely accepted in Nigeria due to limited understanding by road users. The 49.5 km Lekki-Epe Road (LER) and 1.36 km Lekki-Ikoyi cable-stayed Link Bridge (LILB) concession road were selected for detailed study. Closed and open ended questionnaires were administered to road users and analyzed. The study findings show that majority of the road users are civil servants, non-resident in the study area and are high-end users of the roads. Also, home based trip purpose, use of personal vehicles, preference for paying the toll fees in cash regardless of the discounts offered on E-Tags was observed among the respondents. Consequently, majority of the road users complained of non-availability of alternative routes, being overtaxed especially when having to use the roads multiple times in a day. The use of fuel tax in financing highway construction and maintenance, and that neither new nor existing highways should be tolled also constitute feedbacks from road users. The study recommends that other options of road infrastructure financing such as the Build, Operate and Transfer should also be considered, and the tolling concessioning period needs to be properly defined. Also, multimodal systems of transportation should also be enhanced in developing countries to alleviate the stress imposed on road pavements that thereby hastens their deterioration.Item Evaluation of Cow Bone Ash (CBA) as Additives in Stabilization of Lateritic and Termitaria Soil(American Academic Scientific Research Journal for Engineering, Technology, and Sciences, 2021) Ariyo, Adanikin; Ajayi, Joseph; Busari, Ayobami; Fakorede, Ebenezer; Fase, TemidayoContinual pavement distresses on Nigerian highways, as well as environmental contamination from abattoir solid wastes such cow-bones have been a major concern. This study examined the usage of additives in stabilizing weak soils and enhancing their geotechnical properties utilizing Cow Bone Ash (CBA) on lateritic and termitaria soils. The following engineering confirmatory tests were carried out on the samples: compaction test, unconfined compressive strength (UCS) and California bearing ratio (CBR) test. CBA at 2%, 4%, 6%, 8%, and 10% were added to the soil samples. The study revealed that for lateritic and termitaria soils, the maximum amount of CBA that would allow for an increase in soaked CBR value was at 6% and 8%, respectively, while for the unsoaked CBR, the peak values was obtained at 8%. Also, the addition of CBA increased the UCS of both soil samples. The addition of CBA resulted in decreasing optimum moisture content (OMC) for termitaria soils as its pore spaces are filled up by the CBA while for the lateritic soils, increase in CBA resulted in increased OMC values. Also, the addition of CBA to both soil samples resulted in an increase in maximum dry density (MDD) values. The study revealed that termitaria soils have higher strength than the lateritic soils due to higher cohesiveness within its pore structure, lower OMC, higher MDD, UCS, and CBR values. The study concludes that the use of CBA to a maximum of 8% as an additive in stabilization of lateritic and termitaria soils is effective and therefore recommends its use in light and medium trafficked roads.Item LIFE-CYCLE COST ANALYSIS (LCCA) COMPARISON OF PAVEMENTS (FLEXIBLE, RIGID AND RIGID-ADMIXED WITH COW BONE ASH)(Journal of Engineering and Technology for Industrial Applications, 2021-08) Ariyo, Adanikin; Falade, Funsho; Olutaiwo, Adewale; Ajibade, Temi; Adeoye, ItunuoluwaLife Cycle Cost Analysis (LCCA) acts as a decision support tool in economic evaluation of cost (agency and user) during pavement type selection, maintenance and rehabilitation strategy. The Life cycle cost analysis was done using the Present worth of Cost method. Technical Recommendations for Highway (TRH) 12 (pavement rehabilitation investigation and design) analysis was used for calculating the agency cost which entailed the initial rehabilitation, maintenance, future and salvage cost. The LCCA analysis period for this study was taken as 40 years as the analysis period have to be sufficiently long to reflect long-term cost differences associated with reasonable design strategies. The result of the study shows that the present worth cost for the varying Pavement presents the options available for decision making. The result revealed that the initial cost of Rigid pavement is the highest followed by the initial cost of Rigid pavement with 15% CBA while flexible Pavement has the lowest initial cost. However, considering the result showing the present worth cost for the varying pavement types present worth cost of flexible pavement is the highest followed by Rigid pavement and Rigid pavement with 15% CBA has the lowest life cycle cost. The study recommended that Rigid pavement with 15% CBA should be considered because it gives the lowest life cycle cost and the initial cost is relatively low.