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In Zambia, coarse aggregates for concreting are normally produced by crushing granite, limestone and basalt among other rock types. However, these rocks are scarce diminishing natural resources and henceforth; the need to study other naturally available materials for full or partial replacement;...

The motivation for venturing in alternative jet fuels has partly been due to the elevated level and volatility of the price of Jet A (a kerosene-based aviation gas turbine fuel) and environmental impacts on global climate change and air quality. The model of the annular combustor for the PT6A-27...

In recent years, the world is gradually shifting away from the use of structural concrete in the construction sector. This is due to its retrogressive limitations such as costs, environmental degradation, low strength-to-weight ratio, its susceptibility to cracking. The world is moving towards...

The study aimed at demonstrating the positive outcome of incorporating optimization techniques in the design procedure for designing steel-concrete composite bridges was conducted. Optimization algorithms have the capability of finding optimal or near optimal solutions in complex problems. In...

The area of northeastern Zambia, between Chama and Lundazi towns, is underlain by rocks belonging to the Irumide Fold Belt, a Mesoproterozoic orogenic belt whose geology is dominated by biotite gneisses, which often show incipient migmatisation, that belong to the Kampemba Group. Less common...

In practice, cured concrete strength may exhibit strength variation from batch to batch and within batch despite the mixes being of the same proportions and with quality control. On the other hand, structural concrete elements are designed to meet specific characteristic strength. In order to...