Assessment of Road Construction in Ethiopian Rainy Seasons

Belay, Momona (2015) Assessment of Road Construction in Ethiopian Rainy Seasons. Masters thesis, Addis Ababa University.

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Road construction is by its nature a complex task that needs a thorough planning and controlled management throughout the lifetime of the project. Its progress can be affected by lots of reasons that results the project to lag behind its scheduled time. Rainy seasons are one of the focal reasons that delay construction projects especially for roads. During rainy seasons, the ground will not be suitable for execution of works, machinery movement and over all construction works. Since most parts of Ethiopia have three months of rainy season each year, these times of the year are usually known to disturb ongoing road constructions. This thesis basically focuses on the ways followed in road construction of Ethiopia during the rainy seasons. The effect of rain and even the remaining moisture afterwards is explained in detail. It tries first to address view of involved parties in the construction sector towards the practice, the country‘s existing condition to observe how constructions are carried out during this times and also what kind of methodologies are used. The trend of other foreign countries is also reviewed so as to compare their experience. In addition to the rain, as there is snow cold and damp moisture in foreign countries the use of Hot Mix Asphalt (HMA) and Warm Mix Asphalt (WMA) is discussed showing both the disadvantages and advantages regarding the fume emissions, energy consumption and other related effects. But as the rainy seasons in Ethiopia are not freezing cold, concrete pavement is cited as a new construction technique in which the types, making and use is discussed especially for concrete paving works in cold weather. The qualitative research made using interviews and case studies tries to elucidate about the working practice during the months of rainy seasons of Ethiopia and the early planning and management of road constructions. Informants of different educational and work back ground are interviewed and also different local and international road projects are reviewed. Conclusions obtained from the assessment made are presented regarding each objective set at the beginning of the paper. Works recommended as able to be done during rainy seasons, scheduling of works for those times and the experience of foreign contractors is stated in the conclusion from the studies made. As to meet its critical objective, this paper recommends some alternate working methodologies, early scheduling of projects and management techniques for project owners, contractors and consultants. Further researches on using alternative pavement materials, like concrete road, is also suggested.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Asphalt, Road construction, Rainy Season
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering
T Technology > TE Highway engineering. Roads and pavements
Divisions: Africana
Depositing User: Andriamparany Edilbert RANOARIVONY
Date Deposited: 01 Nov 2018 07:14
Last Modified: 01 Nov 2018 07:14

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