Research Publications (Engineering and Built Environment)
Permanent URI for this collectionhttp://ir-dev.dut.ac.za/handle/10321/215
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Item Consideration of pavement type service life capacity for sustainable infrastructure development in Nigeria(2019) Abejide, Samuel Olugbenga; Adedeji, Jacob Adedayo; Mostafa, MohamedThe opposition over the use of concrete pavement against the conventional flexible pavement in Nigeria cannot be overemphasized; nevertheless, the question of interest should be: is concrete pavement now a way out of Nigeria road network? Certainly, the success of any road pavement design practice is a function of various factors put together. Yet, the pros and cons of concrete pavement should not be seen from the perspective of a political drive but rather seen on the feasibility of achieving a reliable and sustainable pavement during the intended service life. The necessary factors to be considered in the success of pavement design will depend on; the environmental condition, geotechnical properties of the concrete pavement materials, the mix design of the concrete, the construction practice/workmanship, the expected load cycles and social acceptability. Furthermore, the emphasis on concrete pavement should be as a result of positive success already in use and the viability of the use of concrete pavement over flexible pavement will rely on successes and failures in design and construction which will depend on laboratory testing data so as to generate a code of practice manual which is suitable for a particular geographic location; since soil properties and environmental condition lies in its abundant complexity over a given location. This paper focuses on providing a guide to the use of concrete pavement design in Nigeria and how success in transforming Nigerian roads to rigid pavement can be achieved especially in failed road sections within the southern region and other regions prone to excessive rainfall precipitation.Item Reaction behaviour of drivers to marked and unmarked road : Ghana perspective(The Road Association of Serbia Via-vita, 2021-03-22) Adedeji, Jacob Adedayo; Feikie, Xoliswa; Dzogbewu, Thywill Cephas; Mostafa, MohamedAfrica is the leading continent globally in the rate of road traffic fatalities, yet it is the least motorized compared to the other five continents. This predicament is said to be one of the leading cause of death among youth and generally, rated as one of the ten causes of death in the world. Exclusively, Ghana’s rate of traffic fatalities is growing despite the efforts invested in reducing it. Nevertheless, more focus needs to be invested in the traffic control systems such as traffic signals, signs or road markings. As this system tends to considerably reduce the number of conflicts and minimize road user’s errors. Furthermore, this system creates drivers’ expectations of the conditions which they will meet ahead and the driving tasks required. If misleading information is provided, or none is available, hazardous situations can result. Overall, this traffic system is inadequate or lacking in most developing countries as there are no proper maintenance strategies in place. Thus, this study investigates and evaluates the reaction of drivers to the marked and unmarked roads. Using random quantitative sampling methods, Ghanaian drivers were interviewed on their experiences when driving on the marked and unmarked road. Overall, this study will highlight the necessity of road markings in reducing traffic fatality rate and the psychological effect of the unavailability of road marking on drivers’ expectation and consequently, the effect on their behaviour in most developing countries.