Abstract

The nature of ornamental stones is anisotropic. The heterogeneous characteristics of the anisotropic rocks vary with direction. The highest to lowest strength ratio is known as the anisotropy strength index (ASI). A thorough investigation of the ASI is necessary to determine the best-directed loads for these rocks. On core specimens that have been bored parallel and perpendicular to the weakness planes, this is estimated using both uniaxial compression and point load testing. For this examination, four different rock types had cores that were drilled conventionally and in line with weakness planes. The research shows that drilling cores to weakness planes at a normal or nearly normal angle (90° to 60°) yields the best, most dependable ASI. According to the current study’s findings, the ASI fluctuates depending on how uniformly the mineral content and texture of rocks are. A suggested way to calculate the ASI and the load point strength is also included. This study reveals that the employment of ornamental stone as is (for example, precipitation position is more robust and reliable than that perpendicular form) is critical in determining the resilience of this type of rock and its spatial implementation (e.g. flooring).

Alternate abstract:

Priroda je ukrasnoga kamena anizotropna. Heterogene karakteristike anizotropnih stijena variraju prema smjeru promatranja. Omjer najveće i najmanje čvrstoće poznat je kao indeks anizotropije čvrstoće (ASI). Kod korištenja takvih stijena potrebno je temeljito istraživanje ASI-ja kako bi se utvrdio najbolji smjer opterećenja. To se procjenjuje kod ispitivanja jednoosne tlačne čvrstoće i kod ispitivanja indeksa čvrstoće opterećenjem u točki na jezgrama koje su bušene paralelno i okomito na ravnine oslabljenja. Istraživana su četiri različita tipa stijena čije su jezgre izbušene uobičajeno paralelno s ravninama oslabljenja. Istraživanje pokazuje kako bušenje jezgri do ravnine oslabljenja pod normalnim ili gotovo normalnim kutom (90° do 60°) daje najbolji, najpouzdaniji ASI. Prema rezultatima ovoga istraživanja ASI varira ovisno o ujednačenosti sadržaja minerala i teksture stijene. Također je predložen način izračunavanja ASI-ja koji uključuje indeks čvrstoće opterećenjem u točki. Ovo istraživanje otkriva da je upotreba ukrasnoga kamena po smjeru (na primjer, paralelni je smjer robusniji i pouzdaniji od okomitoga smjera) presudna u određivanju otpornosti ove vrste stijena i u njezinoj prostornoj primjeni (npr. u popločavanju).

Details

Title
INVESTIGATING THE ANISOTROPY STRENGTH INDEX (ASI) FOR SOME EGYPTIAN ORNAMENTAL STONES
Author
Shohda, Ahmed M; Draz, Waleed M; Ali, Faisal A; Yassien, Mohamed A; Mahrous A.M. Ali  VIAFID ORCID Logo 
Pages
41-48
Section
Preliminary communication
Publication year
2023
Publication date
Mar 2023
Publisher
University of Zagreb
ISSN
03534529
e-ISSN
18490409
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2904951297
Copyright
© 2023. This work is published under https://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. This is sourced from HRČAK - Portal of scientific journals of Croatia.