Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: Establishing Relationships between Some Engineering Properties of Granitic Rock Types in Selected Quarries in South-West, Nigeria
by Adeyemo, A. T. and Olaleye, B. M.

Abstract:
Evaluation of some engineering properties of granitic rock types were carried out in selected quarries in Ekiti and Ondo states, Nigeria. The Rock Quality Designations (RQD); Uniaxial Compressive Strength (UCS); and Aggregate Crushing Value (ACV) of the rocks were determined both in the laboratory and on the field using international standard procedures. Subsequently, relationships were established between the determined rock strength parameters. From the results of the investigation, the granite rocks from the study areas were quantitatively evaluated and classified into different strength categories. The RQD of the rocks varies between 65.11% and 89.19% which reveal that the rocks range between fair and good in quality. The UCS varies from 65.65 MPa to 105.38 MPa which indicate that the rocks range from medium to high strength. The ACV varies from 21.99% to 28.31%. The result showed that the higher the RQD and UCS values, the lower the ACV. It was equally established that there are strong relationships between the values of RQD, UCS and ACV. The work will serve as additional database and help in optimizing the engineering design processes involving the use of the determined rock properties before and during excavation of the rock type.

Keywords: strength characteristics, granitic rock, relationship, regression analysis

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