"MATHEMATICAL MODELLING FOR EVALUATING ROAD MAINTENANCE NEEDS AND INTERVENTIONS"

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dc.contributor.authorEZEMENARI, Lawrence Obinani,
dc.date.accessioned2015-01-27T10:18:04Z
dc.date.available2015-01-27T10:18:04Z
dc.date.issued1999-09
dc.descriptionTHESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF M.SC DEGREE IN HIGHWAY AND TRANSPORTATION ENGINEERING. DEPARTMENT OF CIVIL ENGINEERING, FACULTY OF ENGINEERING, AHMADU BELLO UNIVERSITYZARIA, NIGERIA. SEPTEMBER, 1999en_US
dc.description.abstractA mathematical model for prioritizing road maintenance in terms of the timing of maintenance intervention and scope of work done is developed. Three sub-models are incorporated namely, classification, performance and cost sub-models. The classification sub-model uses the roughness measurement to classify the road sections into one of six different states according to their degree of disrepair. The performance sub-model utilizes the first order MarKov Chain Process to simulate future states of the road pavement. The cost sub-model computes both the user cost and maintenance intervention costs. The models are then used to simulate the performance of Rano-Sumaila road in Kano State of Nigeria for a period of twenty years. Results indicate that prompt response to maintenance needs reduces overall expenditure on maintenance over time and also that maintenance expenditure has a high rate of return. The benefit-cost ratio of intervention expenditure on different maintenance activities was found to vary from about twenty eight to less than two, depending on the degree of disrepair on the road before the intervention. It was also confirmed that yearly upgrading of all road sections to the best state would cost less than half of yearly reconstruction of only the totally collapsed sections.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/5912
dc.language.isoenen_US
dc.subjectMATHEMATICAL,en_US
dc.subjectMODELLING,en_US
dc.subjectEVALUATING,en_US
dc.subjectMAINTENANCE,en_US
dc.subjectNEEDS,en_US
dc.subjectINTERVENTIONS"en_US
dc.title"MATHEMATICAL MODELLING FOR EVALUATING ROAD MAINTENANCE NEEDS AND INTERVENTIONS"en_US
dc.typeThesisen_US
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