Department of Civil Engineering

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    An Assessment of Vehicular Traffic Congestion along Abuja-Nasarawa Road with Emphasis on Karu bridge to A.Y.A. Interchange
    (Department of Civil Engineering, Nile University of Nigeria Abuja Nigeria., 2024-04-23) Aluya, L.E; Abubakar Dayyabu; Muoka Anthony
    Transportation is integral to societal connectivity and economic growth, with road transportation being a predominant mode globally. Traffic congestion poses a substantial challenge to efficient road transportation, impacting travel times, fuel consumption, and overall productivity. The Abuja-Nasarawa Road, a critical transportation corridor in the Federal Capital Territory, faces persistent congestion issues attributed to factors such as increased vehicle numbers, inadequate infrastructure, and poor traffic management. The escalating traffic congestion along Abuja-Nasarawa Road adversely affects the region's productivity and economic development. This study aims to analyze the traffic congestion along the Abuja Nasarawa Road to improve decision-making regarding road use and transportation system planning. The research design combines qualitative and quantitative methods, utilizing a questionnaire and traffic data collection. The study focused on the A.Y.A Interchange – Karu bridge section of the road, a critical stretch facing congestion issues. The methodology involved traffic data collection, including vehicle counts, traffic volumes, and average speeds. Statistical analysis was conducted using SPSS software. Results indicate varying traffic flow rates during morning and evening peak hours. Karu bridge experienced the highest traffic congestion, with a flow rate of 5433 vehicles per hour in the morning. The qualitative analysis revealed the distribution of road users. The findings also revealed a prevalence of traffic congestion attributed to the concentration of economic activities in the Federal Capital City (FCC), leading to increased commuter influx. This study provides a valuable resource for future urban planning initiatives and highlights the need for comprehensive solutions to solve the region’s complex traffic congestion problems and recommends measures such as maintaining and expanding the road network, introducing alternative transportation like a railway service, and completing alternative routes such as the Apo-Karshi Road.
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    Analysis of the Mechanical Conformity of the Reinforcement Steels Used in Nigerian Market to the Standards
    (Journal of Mechanical Engineering Research and Developments, 2021-04-04) Begmyrat Kulmedov; Abubakar Dayyabu; Sanusi Abdulganiyu; Abdullahi Abubakar Hassan
    Population growth in cities couple with lack of spaces for building forced people and government to embrace the concept of high-rise building. The construction of high-rise building involves proper idealization, estimation of loads, analysis of idealize structure, adequate specification of sizes and material. The paper investigated the mechanical compliance of market supply by reinforced concrete iron rod in with BS 4449 requirement of diameter, yield strength, elongation, and stress ratio through hydraulic universal testing machine. As a result, among the eight manufacturers only F and H complied to the size specified on the reinforcement. On yield strength only F and on % elongation only C, E and H complied with standards.
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    Evaluation of the Mechanical and Durability Properties of Marble Waste-Modified Rigid Pavement Material
    (MDPI.com, 2025-04-04) Ifeyinwa Ijeoma Obianyo; Maurice Simon Nwaforcha; Kudu Yusuf; Sanusi Abdulganiyu; Abubakar Dayyabu; Musa Umar Kolo; AzikiwePeterOnwualu2
    One of the environmental concerns today is the increasing amount of waste generated from marble quarrying and processing. This study evaluates the mechanical and durability properties of marble waste-modified rigid pavement material. A series of laboratory tests was conducted to obtain the properties of marble waste-modified rigid pavement material. The slump value decreases as the percentage of marble waste increases. As the percentage of marble waste increases, the dry density gradually decreases from 2770 kg/m3 to 2590 kg/m3. Comparison of the 7-day and 28-day compressive strength indicates that replacing the gravel with marble waste resulted in early strength gain, making it suitable for use in conditions that require early strength gain. The scanning electron microscopy results indicated higher calcium content for the 10% marble waste sample, which is responsible for the cementation and supports the higher compressive strength obtained for the sample at 7 days of curing, due to early strength gain. The study is the first to show the synergistic effect of marble waste on early strength and durability in rigid pavements These findings. showed that marble waste can be used as a modifier in rigid pavement materials. The study contributes to Sustainable Development Goals 9 and 11