Authors : Omonaye J.; Olaleye B. M.; Okewale I. A.; Gata T. B.

Volume/Issue : Volume 11 - 2026, Issue 5 - May

Google Scholar : https://tinyurl.com/344d5nxn

Scribd : https://tinyurl.com/bdjuz9d8

DOI : https://doi.org/10.38124/ijisrt/26May730

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Abstract : Geomechanical characterization of limestone is critical for assessing its suitability in engineering and construction applications. This study evaluates the mechanical properties of limestone from five locations (A1–A5) using uniaxial compressive strength (UCS) and Brazilian tensile strength (BTS) tests. Representative samples were prepared in accordance with ISRM standards and tested under controlled laboratory conditions. The UCS results range from 31.19 MPa to 68.06 MPa, indicating moderate to high strength variability across the study area. Locations A2 and A5 exhibit relatively higher compressive strength, suggesting more competent and well-cemented limestone, while A3 and A4 show greater variability due to heterogeneity in rock properties. BTS values range from 3.11 MPa to 7.24 MPa, confirming that limestone is significantly weaker in tension than in compression. A consistent relationship between UCS and BTS was observed, with tensile strength representing a small proportion of compressive strength. The results highlight the influence of geological variability on rock strength and emphasize the need for site-specific evaluation. This study provides useful data for geotechnical design, material selection, and rock mass classification in engineering applications.

Keywords : Limestone, UCS, BTS, Geomechanical Properties, Engineering Applications.

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