Department of Civil Engineering
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Item Physical, mechanical and durability properties of Bambusa vulgaris Schrad. ex J.C.Wendl.: implications for sustainable construction in Nigeria(ScienceDirect, 2025-05-05) Osezuah Abraham Orianegbena; Muoka Anthony; Obianyo Ifeyinwa Ijeoma; Mahamat Assia Abuobakar; Sanusi Abdulganiyu; Abubakar DayyabuThe incidence and severity of climate-related problems such as flooding, erosion and extreme heat are increasing across the globe. Such problems are in part attributed to the construction industry’s dependency on high CO2-emission materials such as concrete and steel. Although there is a range of alternative materials, such as bamboo, which are in abundant supply, have low carbon footprints and are great thermal insulators, their use is quite low in Nigeria. We investigated how bamboo, specifically Bambusa vulgaris, from Abuja, Nigeria, could help meet the demands of building construction while being resilient to climate change. Laboratory tests were done to establish the physical, mechanical and durability properties of bamboo to evaluate its performance under different environmental conditions. Average water absorption percentages for fresh and dry bamboo samples were determined to be 16.0 % and 19.1 %, respectively, with moisture content averaging at 28.0 % and 17.7 %, respectively. The dry specimens had the greatest tensile strength, with a value of 84.8 MPa. The average compressive strengths were 13.7 MPa and 16.6 MPa for fresh and dry bamboo samples, respectively. We provide quantitative information on the physical and mechanical properties of Bambusa vulgaris, demonstrating its structural performance and environmental impact as well as its sustainability and potential ability to counteract the negative effects of climate change. Our research will assist in the formulation of building regulations and standards in addition to encouraging the use of bamboo in eco–friendly construction uses.Item 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 HassanPopulation 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.Item 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; AzikiwePeterOnwualu2One 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