ir.bowen.edu.ng:8181/jspui/handle/123456789/380 These are articles published in journals by academics staff Thu, 02 Apr 2026 17:47:01 GMT 2026-04-02T17:47:01Z ir.bowen.edu.ng:8181/jspui/handle/123456789/872 Title: Capacity optimization of reinforced concrete circular column Authors: Okeniyi, A. G.; Odewumi, T. O.; Adeniji, S. O.; Akanbi, O. T. Abstract: The paper is all about pragmatic method of increasing structural performance of reinforced concrete circular column at the same quantity provision of the main bars. Main attention was given to the ring component of the column reinforcement. Materials were collected and treated as it may be demanded in normal design and construction processes. Circular column reinforcement fabrications were carried out as specimens with circular and spiral rings. Different angles of inclination were considered for the spiral rings at equivalent spacing of that of circular, using the same cross sectional size of steel and area of the composite element. Laboratory crushing test was carried out at the required same ages of casting and curing to obtain results. The analysed crushing strength results thus revealed considerable increase in load carrying capacity of the spirally ringed reinforced column above the circular rings at same cost implication. Mon, 01 Jan 2018 00:00:00 GMT ir.bowen.edu.ng:8181/jspui/handle/123456789/872 2018-01-01T00:00:00Z ir.bowen.edu.ng:8181/jspui/handle/123456789/870 Title: Assessment of the effect of Leachate on groundwater quality around Lapite dumpsite in Ibadan, Southwestern Nigeria Authors: Oluokun, G. O.; Agbede, O. A.; Adeyemi, G. A.; Abidoye, N. A.; Akanbi, O. T. Abstract: This study assessed the effect of leachate generated by Lapite dumpsite on groundwater quality of the sites around it. Fourteen (14) groundwater and one (1) leachate samples were collected and analysed for cations, anions, heavy metals and water physical parameters. The result of this study indicated that concentrations; cations (Na+, K+, Mg2+, and Ca2+), anions (NO3 -, Cl-, HCO3 -, and SO4 2-) and physical parameters (pH, temperature (o C), total dissolved solid (mg/l) and electrical conductivity (us/cm) measured for all the water samples outside the boundary of the dumpsite fall within the range provided by WHO (2003) for drinking water. Reverse is the case for the leachate, stream and well water samples, collected at the entrance of the site. Heavy metals present except chromium and cadmium did not fall within the range provided by WHO (2004). This may be attributed to the effect of leachate from the dumpsite. This suggested that the groundwater around the site is still safe for human consumption and therefore suitable for engineering constructions. Although the heavy metals such as lead and iron present in the water should be treated. The water in the well at the entrance of the site is not safe for drinking and therefore all the groundwater within the compound of the site might have been contaminated and hence not safe for human consumption and engineering constructions. Sun, 01 Jan 2017 00:00:00 GMT ir.bowen.edu.ng:8181/jspui/handle/123456789/870 2017-01-01T00:00:00Z ir.bowen.edu.ng:8181/jspui/handle/123456789/869 Title: Assessment of pollution level in the rivers of Idah town, Kogi state, North Central Nigeria Authors: Oluokun, G. O.; Salau, O. B. E.; Agbede, O. A.; Akanbi, O. T.; Idenyi, A. A. Abstract: Water from river and spring are vulnerable to different kinds of pollutions. Hence, there is need to intensify research on pollution in rivers. This paper presents the pollution level in four major selected rivers in Idah town: Inchalo, Idu – Okoliko, Ofiayi and Ocheche. These rivers are sources of domestic water supply in Idah town, Kogi State. Water samples taken from these rivers were analyzed for physical, chemical and bacteriological parameters. Parameters assessed included temperature, colour, turbidity, TDS, pH, Nitrate and Sulphate. Others were Iron, Alkalinity, Chloride, TSS, Hardness and Coliform bacteria. The result of the analyses indicates that the water in the rivers have an ambient temperature of 27 C and are slightly acidic. The colour of the water in Idu – Okoliko and Ocheche were above 50PCU.Inchalo and Ofiayi were slightly turbid while Idu – Okoliko was the most turbid. Iron content in each of the rivers was in excess of WHO's limit of 0.3mg/l. The results further revealed that Coliform bacteria are present in all the rivers. Even though other parameters fall within the WHO/NIS standards for potable water, the waters were generally unfit for human consumption without treatment. This possibly has a reflection in the water borne diseases patient records collected from Idah General Hospital. It is therefore recommended that government and other related agencies, sensitize people in Idah town on the treatment of the water before it is used for drinking purpose. Government should also intensify effort on the provision of potable water for the people in this environment. Sun, 01 Jan 2017 00:00:00 GMT ir.bowen.edu.ng:8181/jspui/handle/123456789/869 2017-01-01T00:00:00Z ir.bowen.edu.ng:8181/jspui/handle/123456789/867 Title: Effects of varying concentrations of chloride (Sodium Chloride) on the compressive strength of laterized concrete Authors: Agbede, O. A.; Akanbi, O. T.; Oluokun, G. O.; Alomoja, A. J. Abstract: Compressive strength, one of the important characteristics of concrete can be influenced by different foreign materials present in the constituents of the concrete. This paper demonstrates the influence of sodium chloride (NaCl) on compressive strength of Laterised Concrete (LATCON). Several studies have established the effect of sea water on concrete strength but none of the study has categorically specified the level of concentration at which the strength is defective. This study bridge the gap by examining the variation of concrete compressive strength at different levels of concentrations of salt in the curing bath. The study used LATCON being a cost effective concrete. 72 concrete cubes were produced using 1:2:4 mix ratio with laterite as a fine aggregate. The cubes were cured in NaCl solution of varying concentrations from 0g/l to 50g/l at 10g/l intervals. The compressive strength of the laterized concretes was determined after 7, 14, 21 and 28 days. The results showed that compressive strength of the concrete increase with increase in curing age. The strength also increases with increase in salt concentration in the curing bath, upto 30g/l salt concentration and then starts to decrease. The study thus reveals that NaCl could have a deteriorative effect on the compressive strength of LATCON at higher concentrations. However, this does not pose a major threat if the concrete would be used as a lightweight concrete. Fri, 01 Jan 2016 00:00:00 GMT ir.bowen.edu.ng:8181/jspui/handle/123456789/867 2016-01-01T00:00:00Z