Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression
The influence of low temperature on longitudinal wave velocity, uniaxial compression strength, tensile strength, peak strain, secant modulus, and acoustic emission characteristics of yellow sandstones was studied. The results show that the secant modulus increases with decreasing temperature when th...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/1872065 |
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| author | Hong-Ying Wang Qiang Zhang |
| author_facet | Hong-Ying Wang Qiang Zhang |
| author_sort | Hong-Ying Wang |
| collection | DOAJ |
| description | The influence of low temperature on longitudinal wave velocity, uniaxial compression strength, tensile strength, peak strain, secant modulus, and acoustic emission characteristics of yellow sandstones was studied. The results show that the secant modulus increases with decreasing temperature when the axial strain is less than 0.6%, and a contrary influence performs for the subsequent stage due to the fracture of the pore ice. With the decrease in temperature, the uniaxial compression strength first increases and then remains at a relatively constant value of 34.44 MPa at about -40°C while the temperature ranges from -40°C to -70°C. The tensile strength shows an approximate linear increment as the temperature. The peak strain gradually increases with temperature in a three-stage piecewise linear form, and the increasing rate gradually decreases with the decreasing temperature. The phase transformation from liquid water at a temperature of 20°C to solid ice at a temperature of -3°C significantly increases the longitudinal wave velocity from 1.55 km/s to 3.36 km/s. When the temperature is lower than -10°C, the longitudinal wave velocity approximately increases linearly at a rate of 2.67×10−3 km/s·°C−1 with decreasing temperature. |
| format | Article |
| id | doaj-art-743060e43ce441579964a3fc12ab669c |
| institution | OA Journals |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-743060e43ce441579964a3fc12ab669c2025-08-20T02:07:27ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/18720651872065Mechanical Behavior of Frozen Porous Sandstone under Uniaxial CompressionHong-Ying Wang0Qiang Zhang1School of Transportation Engineering, Jiangsu Vocational Institute of Architectural Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221116, ChinaThe influence of low temperature on longitudinal wave velocity, uniaxial compression strength, tensile strength, peak strain, secant modulus, and acoustic emission characteristics of yellow sandstones was studied. The results show that the secant modulus increases with decreasing temperature when the axial strain is less than 0.6%, and a contrary influence performs for the subsequent stage due to the fracture of the pore ice. With the decrease in temperature, the uniaxial compression strength first increases and then remains at a relatively constant value of 34.44 MPa at about -40°C while the temperature ranges from -40°C to -70°C. The tensile strength shows an approximate linear increment as the temperature. The peak strain gradually increases with temperature in a three-stage piecewise linear form, and the increasing rate gradually decreases with the decreasing temperature. The phase transformation from liquid water at a temperature of 20°C to solid ice at a temperature of -3°C significantly increases the longitudinal wave velocity from 1.55 km/s to 3.36 km/s. When the temperature is lower than -10°C, the longitudinal wave velocity approximately increases linearly at a rate of 2.67×10−3 km/s·°C−1 with decreasing temperature.http://dx.doi.org/10.1155/2021/1872065 |
| spellingShingle | Hong-Ying Wang Qiang Zhang Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression Geofluids |
| title | Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression |
| title_full | Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression |
| title_fullStr | Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression |
| title_full_unstemmed | Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression |
| title_short | Mechanical Behavior of Frozen Porous Sandstone under Uniaxial Compression |
| title_sort | mechanical behavior of frozen porous sandstone under uniaxial compression |
| url | http://dx.doi.org/10.1155/2021/1872065 |
| work_keys_str_mv | AT hongyingwang mechanicalbehavioroffrozenporoussandstoneunderuniaxialcompression AT qiangzhang mechanicalbehavioroffrozenporoussandstoneunderuniaxialcompression |