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Review of Environment and Earth Sciences

March 2018, Volume 5, 1, pp 1-7

Likely Effects of Geological Features on Carbonate Rock Strength

Hasan Arman

,

Saber Hussein

,

Shamma Khalfan Alshehyari

,

Hiba Hashim El Imam

,

Asmaa Ahmad Alhaj

,

Maryam Ali Albedwawi

Hasan Arman 1 ,

Saber Hussein 1 

Shamma Khalfan Alshehyari 3 Hiba Hashim El Imam 3 Asmaa Ahmad Alhaj 3 Maryam Ali Albedwawi 3 

  1. United Arab Emirates University, College of Science, Geology Department Al Ain, UAE 1

  2. Undergraduate students at the United Arab Emirates University, College of Science, Geology Department, UAE 3

Pages: 1-7

DOI: 10.18488/journal.80.2018.51.1.7

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Article History:

Received: 14 March, 2018
Revised: 18 April, 2018
Accepted: 20 April, 2018
Published: 24 April, 2018


Abstract:

Rock strength is commonly recognized as a rock ability to resist stress or deformation without breaking down. Its measurement in either in-situ or laboratory environment is costly and requires time-consuming efforts for rock sampling, preparation and laboratory tests. There are different suggested testing methods available such as Unconfined Compressive Strength (UCS), Point Load Index (PLI), Indirect Tensile Strength (ITS), Schmidt Hammer Rebound (SHR), etc. and used to interpret of rock strength properties. The study will only focus on carbonate rocks (Upper Eocene Dammam Formation) which were collected from different selected sites in the Hafeet Mountain area, Al Ain city, United Arab Emirates. Following the sample preparations based on the ASTM standards, about fourth UCS, fourth-one ITS, thirty-seven PLI and hundreds to thousands of SHR tests were carried out on rock blocks and core samples according to ASTM Standards. The study indicates that the relationships between UCS and PLI, ITS, SHR of limestone can be estimated using the simple linear mathematical equations. However, the results exhibit a weak to weaker linear correlation with highly scattered data. This may be due to sample heterogeneity and nature of the sample. Therefore, it still needs better confirmation with more samples from different locations in order to use confidently in engineering applications.
Contribution/ Originality
This study documents the likely effects of geological features on Upper Eocene carbonate rock strength. It is remarkably noted that the presence of either the cavities or fossils, that have heterogonous distribution, certainly affect geomechanical properties of carbonate rock. This impact was clearly on the laboratory results.

Keywords:

Carbonate rocks, Hafit mountain, Geo-engineering, Rock strength, Geological features, Laboratory tests.

Reference:


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Funding:

The authors wish to express their sincere appreciation to the United Arab Emirates University, Research Affairs Office at for providing financial support for this project (SURE +2017)

Competing Interests:

The authors declare that they have no competing interests.

Acknowledgement:

The authors wish to express their sincere appreciation to the College of Science and Department of Geology for their valuable supports, which led to finalize this research work. In addition, we would like to specially thank Dr. Osman Abdelghany, Dr. Mahmoud Abu-Saima for their help and guidance during field study and Technician Mr. Omer Basher and Research Associate Mohamed Abdelrahman for their assistance and cooperation in laboratory works.

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