Browsing by Author "B.M. Olaleye"

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    Investigation of Some Physical and Strength Properties of Clay and Weathered Bedrock for Production of Hydra Form Bricks
    (2010) S. O. Abdulrahaman; B.M. Olaleye; M. A. Saliu
    Clay and weathered bedrock samples at Ilorin, Kwara State, Nigeria have been investigated; as alternative earth materials for the production of hydraform bricks. Varying mixes of clay and weathered bedrock samples were evaluated and their physical and chemical properties determined. The compressive strength of the bricks made from different mixes were determined using Hydraform Block Tester. The result of the investigation showed that a 50:50 mix ratio of clay and weathered bedrock samples gave hydraform bricks of highest strength averaging 4.4 MPa which makes it better and stronger hydraform blocks than the ones produced from laterite which is 2.90 MPa. The mix ratio also has a medium absorption rate of 6.25% which falls within ASTM standard and which is quite adequate for construction works applications.
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    Strategic Equipment Maintenance Management in A Medium Scale Quarry, Ogun State, Nigeria.
    (2017) S. O.Abdulraman; B.M. Olaleye
    Poor performance of granite aggregate quarries is a big challenge to the mineral industry in Nigeria. It threatens the future prosperity of the industry and granite aggregate supply to meet the ever-increasing demand for infrastructural development projects. One major factor impacting on the reliability of quarries is the maintenance management system of the quarry equipment. This paper presents the present situation on equipment maintenance management system of Geoworld quarry in Ogun State, Nigeria. Maintenance management audit of the quarry was carried out through questionnaires with respect to five basic elements of maintenance management system (resource management, information management, preventive maintenance and equipment technology, planning and scheduling and maintenance support). 'SWOT Clock Strategic Behaviour Model was adapted to suggest a rationalistic typology for the quarry management in considering the quarry's strategic direction on equipment maintenance based on the interaction between the quarry's capabilities and resources from the viewpoint of strengths and weaknesses (SW) and between the opportunities and threats (OT) identified in the quarry's environment. Findings show that improvement strategies adopted will impart positively on the areas of deficiencies of the quarry by moving it from state of survival to growth.