Browsing by Author "AJAGBE W.O"

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    Environmental Impact of Road Dualisation: A Case Study of Mokola-Ojoo Road in Ibadan
    (2013) AGBEDE O.A; AJAGBE W.O
    The impacts of the dualisation of Mokola - Ojoo road in Ibadan, Nigeria on the inhabitants, socio-economic activities, biological and air environment were studied using physical observation and questionnaire survey. The dualisation caused the demolition of some adjoining structures and historic site, displacement of the inhabitants, the pollution of air with dust and carbon monoxide and brought untold hardships on the road users. Although the long term benefit of the dualisation is well recognized, the negative impacts may as well reduce the benefit thus establishing the importance of conducting proper Environmental Impact Assessment prior to the commencement of the project.
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    Reliability Assessment of Bridge Decks: A Case Study of Three Bridges Along Lagos – Ibadan Expressway.
    (2012) AGBEDE O.A.; AJAGBE W.O
    The ageing and gradual deterioration of bridges in Nigeria needs balancing of cost-effective plans for bridge maintenance, rehabilitation and replacement. This research aims at assessing the reliability of bridges using three existing highway bridges along Lagos-Ibadan expressway as a case study. Visual inspection, sounding, half-cell potential and chloride concentration tests were utilized to evaluate the conditions of the bridges. Deteriorations were observed on the decks’ surfaces. The level of corrosion on one deck was active and uncertain in the remaining two. The chloride concentrations on all the decks were within AASHTO standards and only one of the decks had delaminated. The results revealed that none of the decks needs total replacement but all require some form of rehabilitation.