Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone
Split-Hopkinson pressure bar (SHPB) tests were conducted for sandstone after recurrent heat-cool (H-C) cycles. Physical and mechanical properties, damage, and fracture characteristics of sandstone after the H-C cycle were explored. Additionally, the damage variable and release rate of damage strain...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7318768 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850172450645475328 |
|---|---|
| author | Rong-rong Zhang Pu Yuan |
| author_facet | Rong-rong Zhang Pu Yuan |
| author_sort | Rong-rong Zhang |
| collection | DOAJ |
| description | Split-Hopkinson pressure bar (SHPB) tests were conducted for sandstone after recurrent heat-cool (H-C) cycles. Physical and mechanical properties, damage, and fracture characteristics of sandstone after the H-C cycle were explored. Additionally, the damage variable and release rate of damage strain were defined to describe the damage degree of the sandstone specimen after recurrent H-C cycles. Finally, the relationship between mass fractal dimension of fragmentation and cycling number was discussed. Results show that the P-wave velocity and density decrease with the increase of cycling number, while the porosity increases. It was found that the dynamic compressive strength and relative elastic modulus decrease with the increase of cycling number. 20 cycles is the critical point for the low temperature (L-T) group and moderate temperature (M-T) group, while it is 4 cycles for the high temperature (H-T) group. With the increase of cycling number, both the damage variable and release rate of damage strain of rock increase, while the destruction degree of sandstone becomes greater, and the corresponding fragments show more evenly. |
| format | Article |
| id | doaj-art-d09c6e1fb356431084e237317f0eef16 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-d09c6e1fb356431084e237317f0eef162025-08-20T02:20:05ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/73187687318768Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of SandstoneRong-rong Zhang0Pu Yuan1Research Center of Mine Underground Engineering, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, ChinaResearch Center of Mine Underground Engineering, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, ChinaSplit-Hopkinson pressure bar (SHPB) tests were conducted for sandstone after recurrent heat-cool (H-C) cycles. Physical and mechanical properties, damage, and fracture characteristics of sandstone after the H-C cycle were explored. Additionally, the damage variable and release rate of damage strain were defined to describe the damage degree of the sandstone specimen after recurrent H-C cycles. Finally, the relationship between mass fractal dimension of fragmentation and cycling number was discussed. Results show that the P-wave velocity and density decrease with the increase of cycling number, while the porosity increases. It was found that the dynamic compressive strength and relative elastic modulus decrease with the increase of cycling number. 20 cycles is the critical point for the low temperature (L-T) group and moderate temperature (M-T) group, while it is 4 cycles for the high temperature (H-T) group. With the increase of cycling number, both the damage variable and release rate of damage strain of rock increase, while the destruction degree of sandstone becomes greater, and the corresponding fragments show more evenly.http://dx.doi.org/10.1155/2019/7318768 |
| spellingShingle | Rong-rong Zhang Pu Yuan Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone Advances in Civil Engineering |
| title | Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone |
| title_full | Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone |
| title_fullStr | Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone |
| title_full_unstemmed | Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone |
| title_short | Effect of Hydrothermal Coupling on Physical and Dynamic Mechanical Properties of Sandstone |
| title_sort | effect of hydrothermal coupling on physical and dynamic mechanical properties of sandstone |
| url | http://dx.doi.org/10.1155/2019/7318768 |
| work_keys_str_mv | AT rongrongzhang effectofhydrothermalcouplingonphysicalanddynamicmechanicalpropertiesofsandstone AT puyuan effectofhydrothermalcouplingonphysicalanddynamicmechanicalpropertiesofsandstone |