Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions
Mechanical properties of sandstone, such as compressive strength and young’s modulus, are commonly used in the design of geotechnical structures and numerical simulation of underground reservoirs using models such as the digital groundwater, equivalent porous medium, and Discrete Fracture Network (D...
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MDPI AG
2023-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/13/4867 |
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| author | Esraa M. Alomari Kam W. Ng Lokendra Khatri Shaun S. Wulff |
| author_facet | Esraa M. Alomari Kam W. Ng Lokendra Khatri Shaun S. Wulff |
| author_sort | Esraa M. Alomari |
| collection | DOAJ |
| description | Mechanical properties of sandstone, such as compressive strength and young’s modulus, are commonly used in the design of geotechnical structures and numerical simulation of underground reservoirs using models such as the digital groundwater, equivalent porous medium, and Discrete Fracture Network (DFN) models. A better understanding of the mechanical behaviors of sandstone under different loading conditions is imperative when assessing the stability of geotechnical structures. This paper highlights the effect of the physical properties (i.e., porosity, mean grain size) and environmental conditions (i.e., water content and confining stress) on uniaxial compressive strength, triaxial compressive strength, and young’s modulus of sandstone. A series of uniaxial and triaxial compression experiments are conducted on sandstone formations from Wyoming. In addition, experimental data on sandstones from the literature are compiled and integrated into this study. Prediction equations for the compressive strengths and young’s modulus of sandstone are established based on commonly available physical properties and known environmental conditions. The results show that the mean Uniaxial Compressive Strength (UCS) decreases as the porosity, water content, and mean grain size increase. Furthermore, a predictive empirical relationship for the triaxial compressive strength is established under different confinements and porosity. The relationship suggests that the mean peak compressive strength increases at a higher confinement and decreases at a higher porosity. The results and recommendations provide a useful framework for evaluating the strength and deformation of most sandstone. |
| first_indexed | 2024-03-11T01:34:55Z |
| format | Article |
| id | doaj.art-19b540cb440042f5994c9948255cbc3e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T01:34:55Z |
| publishDate | 2023-07-01 |
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| record_format | Article |
| series | Materials |
| spelling | doaj.art-19b540cb440042f5994c9948255cbc3e2023-11-18T17:01:00ZengMDPI AGMaterials1996-19442023-07-011613486710.3390/ma16134867Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial CompressionsEsraa M. Alomari0Kam W. Ng1Lokendra Khatri2Shaun S. Wulff3Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY 82071, USADepartment of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY 82071, USADepartment of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY 82071, USADepartment of Mathematics and Statistics, University of Wyoming, Laramie, WY 82071, USAMechanical properties of sandstone, such as compressive strength and young’s modulus, are commonly used in the design of geotechnical structures and numerical simulation of underground reservoirs using models such as the digital groundwater, equivalent porous medium, and Discrete Fracture Network (DFN) models. A better understanding of the mechanical behaviors of sandstone under different loading conditions is imperative when assessing the stability of geotechnical structures. This paper highlights the effect of the physical properties (i.e., porosity, mean grain size) and environmental conditions (i.e., water content and confining stress) on uniaxial compressive strength, triaxial compressive strength, and young’s modulus of sandstone. A series of uniaxial and triaxial compression experiments are conducted on sandstone formations from Wyoming. In addition, experimental data on sandstones from the literature are compiled and integrated into this study. Prediction equations for the compressive strengths and young’s modulus of sandstone are established based on commonly available physical properties and known environmental conditions. The results show that the mean Uniaxial Compressive Strength (UCS) decreases as the porosity, water content, and mean grain size increase. Furthermore, a predictive empirical relationship for the triaxial compressive strength is established under different confinements and porosity. The relationship suggests that the mean peak compressive strength increases at a higher confinement and decreases at a higher porosity. The results and recommendations provide a useful framework for evaluating the strength and deformation of most sandstone.https://www.mdpi.com/1996-1944/16/13/4867compressive strengthconfining stressporositywater contentyoung’s modulus |
| spellingShingle | Esraa M. Alomari Kam W. Ng Lokendra Khatri Shaun S. Wulff Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions Materials compressive strength confining stress porosity water content young’s modulus |
| title | Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions |
| title_full | Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions |
| title_fullStr | Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions |
| title_full_unstemmed | Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions |
| title_short | Effect of Physical Properties on Mechanical Behaviors of Sandstone under Uniaxial and Triaxial Compressions |
| title_sort | effect of physical properties on mechanical behaviors of sandstone under uniaxial and triaxial compressions |
| topic | compressive strength confining stress porosity water content young’s modulus |
| url | https://www.mdpi.com/1996-1944/16/13/4867 |
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