Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite
Thermal shock is common in fire disaster and blasting of rock engineering; moreover, the rock mass bears dynamic mechanical disturbance frequently. In order to study the damage characteristics of thermal shock on physical and dynamic compressive properties, the thermal shock damage of granite treate...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/1623883 |
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| _version_ | 1849683053348126720 |
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| author | Ronghua Shu Lijinhong Huang Xueyi Zhi Zhenyu Han Yuzhang Lai Huizhen Li Chun Wang |
| author_facet | Ronghua Shu Lijinhong Huang Xueyi Zhi Zhenyu Han Yuzhang Lai Huizhen Li Chun Wang |
| author_sort | Ronghua Shu |
| collection | DOAJ |
| description | Thermal shock is common in fire disaster and blasting of rock engineering; moreover, the rock mass bears dynamic mechanical disturbance frequently. In order to study the damage characteristics of thermal shock on physical and dynamic compressive properties, the thermal shock damage of granite treated to different temperatures at different heating rates was obtained by measure the ultrasonic wave velocity, and the internal structures were obtained by scanning electron microscopy experiments. By using split Hopkinson pressure bar, the dynamic experiments on granite treated to 400°C and 600°C at heating rates of 1, 2, 4, 6, 10, 20, 30, and 40°C/min were carried out. Thereby, the damage characteristics of thermal shock on the physical and dynamic compressive properties of granite were obtained. The results show that there is a heating rate threshold value between 6 and 10°C/min, which divides the thermal shock damage. Before the threshold value, the thermal shock does not appear. The dynamic compressive strength, dynamic elastic modulus, and density decrease; however, peak strain increases as the thermal shock damage increases. The researches of thermal effect on granite by heating with the heating rate below or equal to 6°C/min could avoid thermal shock. The research could provide a theoretical foundation for rock engineering suffered thermal shock, such as geothermal reservoir. |
| format | Article |
| id | doaj-art-d1af6d74fb0649bda3b7c5ce6b41a5e7 |
| institution | DOAJ |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d1af6d74fb0649bda3b7c5ce6b41a5e72025-08-20T03:24:00ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/1623883Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of GraniteRonghua Shu0Lijinhong Huang1Xueyi Zhi2Zhenyu Han3Yuzhang Lai4Huizhen Li5Chun Wang6School of Resources and Environmental EngineeringSchool of Architecture and DesignSchool of Resources and Environmental EngineeringSchool of Civil EngineeringSchool of Resources and Environmental EngineeringSchool of Resources and Environmental EngineeringSchool of Energy Science and EngineeringThermal shock is common in fire disaster and blasting of rock engineering; moreover, the rock mass bears dynamic mechanical disturbance frequently. In order to study the damage characteristics of thermal shock on physical and dynamic compressive properties, the thermal shock damage of granite treated to different temperatures at different heating rates was obtained by measure the ultrasonic wave velocity, and the internal structures were obtained by scanning electron microscopy experiments. By using split Hopkinson pressure bar, the dynamic experiments on granite treated to 400°C and 600°C at heating rates of 1, 2, 4, 6, 10, 20, 30, and 40°C/min were carried out. Thereby, the damage characteristics of thermal shock on the physical and dynamic compressive properties of granite were obtained. The results show that there is a heating rate threshold value between 6 and 10°C/min, which divides the thermal shock damage. Before the threshold value, the thermal shock does not appear. The dynamic compressive strength, dynamic elastic modulus, and density decrease; however, peak strain increases as the thermal shock damage increases. The researches of thermal effect on granite by heating with the heating rate below or equal to 6°C/min could avoid thermal shock. The research could provide a theoretical foundation for rock engineering suffered thermal shock, such as geothermal reservoir.http://dx.doi.org/10.1155/2022/1623883 |
| spellingShingle | Ronghua Shu Lijinhong Huang Xueyi Zhi Zhenyu Han Yuzhang Lai Huizhen Li Chun Wang Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite Geofluids |
| title | Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite |
| title_full | Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite |
| title_fullStr | Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite |
| title_full_unstemmed | Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite |
| title_short | Damage Characteristic of Thermal Shock on the Physical and Dynamic Compressive Properties of Granite |
| title_sort | damage characteristic of thermal shock on the physical and dynamic compressive properties of granite |
| url | http://dx.doi.org/10.1155/2022/1623883 |
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