In developing county, sustainable socio-economic development of every community depends much on the sustainability of the environment. The contamination of the environment by anthropogenic practices is globally known to impacts negatively on the environment. The disposal and management of municipal solid waste is a globally challenging issue especially in developing country like Nigeria due to its adverse environmental effects. Mankind depends on the environment to sustain their lives and that solid waste is one of the major environmental problems, other major environmental issues include flooding and desertification in Nigeria and many other developing and even developed countries are threatened by this. Municipal solid wastes consist of day-to-day consumed and discarded items such as food wastes, containers, product packaging and other miscellaneous like residential, commercial, electronic wastes, institutional and industries sources.
Population explosion, improved standards of living, change in social and family structure and urbanization made over previous years have brought about solid waste disposal problem particularly in Nigeria. The use of non-biodegradable by households and changes in usage pattern as new resources comes into use, have led to increase in the quantity and complexity of solid wastes available for disposal in various households. Management of these generated wastes, keeping the away from Nigerian highways has become a big challenge. The waste generated in the country has increased while containment is nonexistent as such, they have become hazards on populace, drainage system in neighborhood streets, roads, and highways.
An analysis of the effects of roadside dumping of these waste on highway pavement with Abuja-Keffi Expressway as case study, identifying sources of wastes, its types, classification, and categories. extensive review of collection, disposal, control measures and factors militating against management, how these affects structural integrity of road pavement.
This paper summarizes the stages of this project. It specifically outlines the field work and presents several data acquisition methods incorporated, with emphasis on how waste dumping led to weakening road subgrade strength, a measure using California Bearing Ratio Test (CBR) as well as increase in Optimum Moisture Content (OMC and Maximum Dry Density (MDD) of the pavement materials. Finally, the paper summarizes the waste management stages with emphasis on type, source, classification, control, effect on traffic and overall structural integrity of Abuja-Keffi Expressway.
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