Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia

Rocks’ physical, mechanical, and mineralogical properties are essential in the design process of underground applications. To understand changes in these rocks’ properties at high temperatures, numerous studies have been conducted on several rock types, with little being known about microschist rock...

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Autores principales:	Haitham M. Ahmed, Hussin A. M. Ahmed, Sefiu O. Adewuyi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	heating microschist P-wave uniaxial compressive strength microstructure Technology T
Acceso en línea:	https://doaj.org/article/57a88bbae1be4da7bdf505773206b252
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spelling	oai:doaj.org-article:57a88bbae1be4da7bdf505773206b2522021-11-25T17:27:15ZCharacterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia10.3390/en142276121996-1073https://doaj.org/article/57a88bbae1be4da7bdf505773206b2522021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7612https://doaj.org/toc/1996-1073Rocks’ physical, mechanical, and mineralogical properties are essential in the design process of underground applications. To understand changes in these rocks’ properties at high temperatures, numerous studies have been conducted on several rock types, with little being known about microschist rock. This paper presents experimental study on the physical (e.g., density and P-wave velocity), mechanical (uniaxial compressive strength (UCS)), and microstructural behavior of microschist rock at room temperature (22 °C) and at high temperatures, i.e., 400, 600, and 800 °C. The results indicated that as the temperature increases, the microschist’s color changed, and dry density decreased by 0.97% at 800 °C. Additionally, the average P-wave velocity of microschist decreased by 4.14, 7.07, and 34.23%, at 400, 600, and 800 °C, respectively. Similarly, at these temperatures, the UCS of the microschist decreased by 34.4, 56.9, and 80.1%, respectively. Further findings from microscopic studies reveal that the observed changes in physical and mechanical properties were due to the structural deformation of the microschist at high temperatures.Haitham M. AhmedHussin A. M. AhmedSefiu O. AdewuyiMDPI AGarticleheatingmicroschistP-waveuniaxial compressive strengthmicrostructureTechnologyTENEnergies, Vol 14, Iss 7612, p 7612 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heating microschist P-wave uniaxial compressive strength microstructure Technology T
spellingShingle	heating microschist P-wave uniaxial compressive strength microstructure Technology T Haitham M. Ahmed Hussin A. M. Ahmed Sefiu O. Adewuyi Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia
description	Rocks’ physical, mechanical, and mineralogical properties are essential in the design process of underground applications. To understand changes in these rocks’ properties at high temperatures, numerous studies have been conducted on several rock types, with little being known about microschist rock. This paper presents experimental study on the physical (e.g., density and P-wave velocity), mechanical (uniaxial compressive strength (UCS)), and microstructural behavior of microschist rock at room temperature (22 °C) and at high temperatures, i.e., 400, 600, and 800 °C. The results indicated that as the temperature increases, the microschist’s color changed, and dry density decreased by 0.97% at 800 °C. Additionally, the average P-wave velocity of microschist decreased by 4.14, 7.07, and 34.23%, at 400, 600, and 800 °C, respectively. Similarly, at these temperatures, the UCS of the microschist decreased by 34.4, 56.9, and 80.1%, respectively. Further findings from microscopic studies reveal that the observed changes in physical and mechanical properties were due to the structural deformation of the microschist at high temperatures.
format	article
author	Haitham M. Ahmed Hussin A. M. Ahmed Sefiu O. Adewuyi
author_facet	Haitham M. Ahmed Hussin A. M. Ahmed Sefiu O. Adewuyi
author_sort	Haitham M. Ahmed
title	Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia
title_short	Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia
title_full	Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia
title_fullStr	Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia
title_full_unstemmed	Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia
title_sort	characterization of microschist rocks under high temperature at najran area of saudi arabia
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/57a88bbae1be4da7bdf505773206b252
work_keys_str_mv	AT haithammahmed characterizationofmicroschistrocksunderhightemperatureatnajranareaofsaudiarabia AT hussinamahmed characterizationofmicroschistrocksunderhightemperatureatnajranareaofsaudiarabia AT sefiuoadewuyi characterizationofmicroschistrocksunderhightemperatureatnajranareaofsaudiarabia
_version_	1718412350593171456

Characterization of Microschist Rocks under High Temperature at Najran Area of Saudi Arabia

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