COMPARISON OF STRENGTH-BASED ROCK BRITTLENESS INDICES WITH THE BRITTLENESS INDEX MEASURED VIA YAGIZ'S APPROACHES

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dc.contributor.authorYermukhanbetov, K
dc.contributor.authorYazitova, A
dc.contributor.authorYagiz, S
dc.date.accessioned2022-07-04T10:59:40Z
dc.date.available2022-07-04T10:59:40Z
dc.date.issued2022
dc.description.abstractRock brittleness is one of the most significant properties of rock having a major impact not only on the failure process of intact rock but also on the response of rock mass to rock excavation. In fact, the brittleness is a combination of rock properties including not only the uniaxial compressive strength (UCS) and Brazilian tensile strength (BTS) but also density and porosity of rocks. Due to that, the brittleness should be examined very carefully for any excavation projects, i.e., mechanized excavation, drilling and blasting. The aim of this paper is to compare the strength-based brittleness indices with both the rock brittleness index (BIo), directly obtained via punch penetration test (PPT) and also estimated via Yagiz's approach (BI1) as a function of strengths and density of rocks. For the aim, database including more than 45 tunnel cases are used to compute common rock brittleness indices (BI2, BI3, BI4), different combination of UCS and BTS. Further, these indices are compared with both BIo and BI1 as well as each other. It is found that the BIo and BI1 have a significant relations (ranging of determination coefficients (r2 ) from 0.69 to 0.88 with strength-based brittleness indices commonly used in practice. Also, based on findings, several rock brittleness classifications are also revised herein.en_US
dc.identifier.citationYermukhanbetov, K., Yazitova, A., & Yagiz, S. (2021). Comparison of strength-based rock brittleness indices with the brittleness index measured via Yagiz’s approaches. IOP Conference Series: Earth and Environmental Science, 833(1), 012038. https://doi.org/10.1088/1755-1315/833/1/012038en_US
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/6359
dc.language.isoenen_US
dc.publisherMechanics and Rock Engineering, from Theory to Practiceen_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectType of acess: Open Accessen_US
dc.subjectRock brittlenessen_US
dc.titleCOMPARISON OF STRENGTH-BASED ROCK BRITTLENESS INDICES WITH THE BRITTLENESS INDEX MEASURED VIA YAGIZ'S APPROACHESen_US
dc.typeArticleen_US
workflow.import.sourcescience

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