Browsing by Author "Aremu, N. I.,"
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Item Inhibitive Potential of Prosopis Africana on Corrosion of Low Carbon Steel in 1M Hydrochloric Acid Medium.(Published by Deer Hill Publications, B-19-06 PV8, Platinum Hill Condominium Jalan Melati Utama, 53100 Kuala Lumpur Malaysia., 2019-06-20) Shuaib–Babata, Y. L.,; Ibrahim, H. K.,; Ambali, I. O.,; Yahya, R. A.,; Ajao, K. S.,; Aremu, N. I.,; Pelumi, A. A.Recently, there is quest for the use of inexpensive, non-toxic, non-biodegradable, readily available and environmentally acceptable corrosion inhibitor. Studies have shown that these properties could be achieved through the use of plants as inhibitor. Inhibiting effect of Prosopis Africana(Iron Tree) seed extracts were assessed on a sample of low carbon steel in 1M HCl with varying proportion of the seed extract using gravimetric, Tafel polarization and gasometrical measurement techniques. The results show that weight loss/corrosion rate decreases with increase in the extracts’ concentrations. Good inhibiting efficiency of Prosopis Africanaextracts with optimum inhibiting efficiency of 97.7% at 1.0 g/l after 120 hours exposure in gravimetric measurement was attained. TAFEL polarization results revealed that the Prosopis Africanaextract shows that the corrosion current density decreases with the increase in the concentration of the extract. The extractis found suitable as green inhibitor for corrosion of low carbon steel in the studied medium.Item Quality Evaluation of Commercially Available Steels in Some Selected Nigerian Markets.(Published by University Politehnica Timisoara, Faculty of Engineering Hunedoara , 5, Revolutiei, 331128, Hunedoara, Romania., 2019-02-14) Shuaib-Babata, Y. L.,; Adewuyi, R .A.,; Ajao, K. S.,; Ambali, I. O.,; Aremu, N. I.,; Ibrahim, H. K.; Abdul, J. M.The incessant building collapse and structural failures in Nigeria has renewed interests in the evaluation of the basic properties of reinforcing steel bars in Nigeria markets, since local markets serve as major source of supply for the steels used in construction and structural development. Thus, this study evaluated the quality of commercially available reinforcing steel bars in some selected markets with a view to determine their suitability for structural applications. Various steel bars samples were obtained from markets in four Nigeria cities. The basic physico-mechanical properties of the samples were examined and the obtained results were compared with the specified parameters in Nigerian Industrial Standard (NIS), ASTM and British Standards. Visual inspections revealed that most of the parameters that must to be indicated in identification marks on reinforcing steel bars were absent. Results also showed that the samples contained the basic chemical constituents of steel and possessed significant strengths and hardness values, but with noticeable inconsistencies in their contents. Thus, the level of compliance with the specified properties in the standards needs improvement. To avoid incessant structural failures in the country, regular and effective monitoring of the quality of steel bars in the markets for structural applications becomes imperative.