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Rock Mechanics and Rock Engineering

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01.01.2013 | Technical Note

Statistical Method for Assessing the Uniaxial Compressive Strength of Carbonate Rock by Schmidt Hammer Tests Performed on Core Samples

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 1/2013

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Extensive efforts have been devoted to derive rock mechanical properties from the Schmidt hammer rebound index (R) performed on core samples. From R measurements, the uniaxial compressive strength of rock (σ_c) can be calculated by means of several mathematical expressions, as reported in Table 1.

Table 1

Relationships between rebound index R and compressive strength of carbonate rocks σ_c and corresponding correlation coefficient r

Author	Formula	r
O’Rourke (1989)	σ_c = 702 × R − 1104	0.77
Sachpazis (1990)	σ_c = 4.2937 × R − 67.515	0.91
Cargill and Shakoor (1990)	σ_c = 1.8 × 10⁻² × γ_d + 2.9	0.98
Yılmaz and Sendır (2002)	σ_c = e ^{[0.059 × R + 0.818]}	0.98
Yaşar and Erdoğan (2004a, b)	σ_c = 4 × 10⁻⁶ × R _N ^4.2917	0.89
Shalabi et al. (2007)	σ_c = 3.201 × R _L − 46.59	0.76

…

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Titel: Statistical Method for Assessing the Uniaxial Compressive Strength of Carbonate Rock by Schmidt Hammer Tests Performed on Core Samples
Publikationsdatum: 01.01.2013
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 1/2013
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-012-0230-5

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