Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling
The aim of this study was to examine the effects of sandstone ring specimens with different inner diameters on dynamic compression mechanical characteristics after dry and wet circulation. To carry out our study, we subjected a sandstone ring specimen with a 50 mm outer diameter and a 0~25 mm inner...
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MDPI AG
2024-03-01
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| Online Access: | https://www.mdpi.com/2076-3417/14/6/2646 |
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| author | Qi Ping Shiwei Wu Xiangyang Li Yijie Xu Jing Hu Shijia Sun |
| author_facet | Qi Ping Shiwei Wu Xiangyang Li Yijie Xu Jing Hu Shijia Sun |
| author_sort | Qi Ping |
| collection | DOAJ |
| description | The aim of this study was to examine the effects of sandstone ring specimens with different inner diameters on dynamic compression mechanical characteristics after dry and wet circulation. To carry out our study, we subjected a sandstone ring specimen with a 50 mm outer diameter and a 0~25 mm inner diameter to 10 cycles of dry and wet circulation. Afterward, we recorded the specimen’s basic physical parameters and used a split-Hopkinson pressure bar (SHPB) test device to perform an impact compression test. Following dry and wet circulation, our results showed that the mass loss rate increased and the volume expansion rates and density decreased with the increase in the inner diameter of the sandstone ring sample. Simultaneously, with the increase in the inner diameter of the specimen ring, the dynamic compressive strength of the specimen presented an exponential negative correlation, the dynamic elastic modulus presented a quadratic negative correlation, and the dynamic peak strain presented a quadratic positive correlation. Concurrently, the average particle size of the specimen decreased, and the degree of breakage increased with the increase in the sandstone sample’s inner diameter. Regarding the energy analysis performed in this study, the sandstone ring sample’s energy dissipation increased, and its kinetic performance evidently weakened with the increase in the ring sample’s inner diameter. The results of this study have certain reference values for the construction and maintenance of natural cavity rock and underground hard rock roadways. |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-24T18:34:13Z |
| publishDate | 2024-03-01 |
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| spelling | doaj.art-3dd753c288884829b7690a740fbef7992024-03-27T13:20:20ZengMDPI AGApplied Sciences2076-34172024-03-01146264610.3390/app14062646Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet CyclingQi Ping0Shiwei Wu1Xiangyang Li2Yijie Xu3Jing Hu4Shijia Sun5State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaThe aim of this study was to examine the effects of sandstone ring specimens with different inner diameters on dynamic compression mechanical characteristics after dry and wet circulation. To carry out our study, we subjected a sandstone ring specimen with a 50 mm outer diameter and a 0~25 mm inner diameter to 10 cycles of dry and wet circulation. Afterward, we recorded the specimen’s basic physical parameters and used a split-Hopkinson pressure bar (SHPB) test device to perform an impact compression test. Following dry and wet circulation, our results showed that the mass loss rate increased and the volume expansion rates and density decreased with the increase in the inner diameter of the sandstone ring sample. Simultaneously, with the increase in the inner diameter of the specimen ring, the dynamic compressive strength of the specimen presented an exponential negative correlation, the dynamic elastic modulus presented a quadratic negative correlation, and the dynamic peak strain presented a quadratic positive correlation. Concurrently, the average particle size of the specimen decreased, and the degree of breakage increased with the increase in the sandstone sample’s inner diameter. Regarding the energy analysis performed in this study, the sandstone ring sample’s energy dissipation increased, and its kinetic performance evidently weakened with the increase in the ring sample’s inner diameter. The results of this study have certain reference values for the construction and maintenance of natural cavity rock and underground hard rock roadways.https://www.mdpi.com/2076-3417/14/6/2646rock dynamicsring sampledynamic compressionenergySHPB (split-Hopkinson pressure bar) |
| spellingShingle | Qi Ping Shiwei Wu Xiangyang Li Yijie Xu Jing Hu Shijia Sun Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling Applied Sciences rock dynamics ring sample dynamic compression energy SHPB (split-Hopkinson pressure bar) |
| title | Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling |
| title_full | Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling |
| title_fullStr | Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling |
| title_full_unstemmed | Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling |
| title_short | Dynamic and Energy Consumption Characteristics of Sandstone Ring Specimens under Dry and Wet Cycling |
| title_sort | dynamic and energy consumption characteristics of sandstone ring specimens under dry and wet cycling |
| topic | rock dynamics ring sample dynamic compression energy SHPB (split-Hopkinson pressure bar) |
| url | https://www.mdpi.com/2076-3417/14/6/2646 |
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