An advanced assessment of sandstone uniaxial compressive tests

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F25%3A00638286" target="_blank" >RIV/68145535:_____/25:00638286 - isvavai.cz</a>

Výsledek na webu

<a href="https://airdrive.eventsair.com/eventsairwesteuprod/production-atlanticmice-public/81d644652c144491b3c1c5d9a6013f48" target="_blank" >https://airdrive.eventsair.com/eventsairwesteuprod/production-atlanticmice-public/81d644652c144491b3c1c5d9a6013f48</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

An advanced assessment of sandstone uniaxial compressive tests

Popis výsledku v původním jazyce

The compressive strength value is used in many technical fields as a basic mechanical resistance parameter to characterize various materials. The uniaxial compression test method is standardized for individual materials and is considered traditional, based on many decades of engineering experience. The uniaxial compressive strength (UCS) is usually determined on cubic or cylindrical test specimens of various dimensions. Its determination on rock core samples, for example, should follow the ISRM recommendation of keeping the length-to-diameter ratio (slenderness ratio) of the test specimen between 2.5 and 3.0. Perhaps the greatest advantage of the UCS testing is its speed and simplicity. UCS is easily measurable and requires no special laboratory equipment other than a compression testing machine. Therefore, it would seem that further research in this direction will not bring anything new. However, in this contribution the authors have tried to find some unusual insights into compressive testing. More specifically, some non-traditional parameters of dry and water-saturated sandstone were determined during uniaxial compressive testing on cylindrical test specimens with five different slenderness ratios ranging from 0.7 to 3.0. In addition to the UCS, parameters such as the effective compressive strength, dynamic bulk modulus, effective elasticity modulus and slope of the fracture surface were determined. The results obtained were correlated with the slenderness ratio of the tested specimens. In addition, the UCS determined on cylindrical and cubic test specimens was compared. Cretaceous medium-grained to coarse-grained arkose sandstone from the Božanov quarry in the north-east Bohemia, a well-known and long-used natural stone in the Czech Republic for construction, architecture and sculpture, was used in the experiment. The observed aspects of response of specimens from this quasi-brittle material to quasi-static loading can enrich the traditional ideas reflected primarily in the standard regulations regarding the recommended slenderness ratio to obtain relevant strength and stiffness characteristics.

Název v anglickém jazyce

An advanced assessment of sandstone uniaxial compressive tests

Popis výsledku anglicky

The compressive strength value is used in many technical fields as a basic mechanical resistance parameter to characterize various materials. The uniaxial compression test method is standardized for individual materials and is considered traditional, based on many decades of engineering experience. The uniaxial compressive strength (UCS) is usually determined on cubic or cylindrical test specimens of various dimensions. Its determination on rock core samples, for example, should follow the ISRM recommendation of keeping the length-to-diameter ratio (slenderness ratio) of the test specimen between 2.5 and 3.0. Perhaps the greatest advantage of the UCS testing is its speed and simplicity. UCS is easily measurable and requires no special laboratory equipment other than a compression testing machine. Therefore, it would seem that further research in this direction will not bring anything new. However, in this contribution the authors have tried to find some unusual insights into compressive testing. More specifically, some non-traditional parameters of dry and water-saturated sandstone were determined during uniaxial compressive testing on cylindrical test specimens with five different slenderness ratios ranging from 0.7 to 3.0. In addition to the UCS, parameters such as the effective compressive strength, dynamic bulk modulus, effective elasticity modulus and slope of the fracture surface were determined. The results obtained were correlated with the slenderness ratio of the tested specimens. In addition, the UCS determined on cylindrical and cubic test specimens was compared. Cretaceous medium-grained to coarse-grained arkose sandstone from the Božanov quarry in the north-east Bohemia, a well-known and long-used natural stone in the Czech Republic for construction, architecture and sculpture, was used in the experiment. The observed aspects of response of specimens from this quasi-brittle material to quasi-static loading can enrich the traditional ideas reflected primarily in the standard regulations regarding the recommended slenderness ratio to obtain relevant strength and stiffness characteristics.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

<a href="/cs/project/GA23-05128S" target="_blank" >GA23-05128S: Vliv strukturních a texturních prvků na porušování transverzálně izotropních hornin zkoumaný pomocí 4D výpočetní tomografie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

ISRM International Symposium Eurock 2025

ISBN

978-82-8208-079-8

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

Norsk Betongforening

Místo vydání

Trondheim

Místo konání akce

Trondheim

Datum konání akce

16. 6. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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