Determination of Mechanical Properties of Altered Dacite by Laboratory Methods
Објеката
- Тип
- Рад у часопису
- Верзија рада
- објављена верзија
- Језик
- енглески
- Креатор
- Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović
- Извор
- Minerals
- Издавач
- MDPI AG
- Датум издавања
- 2021
- Сажетак
-
This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact UCS of the rock material, and mi) with an increase in the participation of “weaker” rock material was determined based on the test results of uniaxial and triaxial compressive strength. The participation of altered dacite directly affects the mode and mechanism of failure during testing. Uniaxial compressive strength (sci UCS) and intact uniaxial compressive strength (sci TX) decrease exponentially with increased AD volumetric participation. The critical ratio at which the uniaxial compressive strength of the composite sample equals the strength of the uniform AD sample was at a percentage of 30% AD. Comparison of the obtained exponential equation with practical suggestions shows a good correspondence. The suggested methodology for determining heterogeneous rock mass strength parameters allows us to determine the influence of rock material heterogeneity on the values sci UCS, sci TX, and constant mi. Obtained sci
TX and constant mi dependences define more reliable rock material strength parameter values, which can be used, along with rock mass classification systems, as a basis for assessing rock mass parameters. Therefore,
it is possible to predict the strength parameters of the heterogeneous rock mass at the transition of hard (D) and weak rock (AD) based on all calculated strength parameters for different participation of AD. - том
- 11
- Број
- 8
- doi
- 10.3390/min11080813
- issn
- 2075-163X
- Subject
- Geology, Geotechnical Engineering, Engineering Geology
- geologija, geotehnika, inženjerska geologija
- Шира категорија рада
- M20
- Ужа категорија рада
- М22
- Права
- Отворени приступ
- Лиценца
- Creative Commons – Attribution 4.0 International
- Формат
- Скупови објеката
- Владимир Милисављевић
- Владимир Чебашек
- Дејан Стевановић
- Вељко Рупар
- Radovi istraživača
- Медија
minerals-11-00813-v2.pdf
Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović. "Determination of Mechanical Properties of Altered Dacite by Laboratory Methods" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11080813
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