 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13427 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8178
|
| In English (Mech. Solids): | | 5249 |
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| Yamo Li, Yang Liu, and Peili Wu, "The Effects of Loading Rates on the Tensile Fracture Characteristics of Heat-treated Granite, Sandstone and Marble Based on Brazilian Splitting Tests," Mech. Solids. 60 (6), 5005-5017 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
6 |
Pages |
5005-5017 |
| DOI |
10.1134/S0025654425603568 |
| Title |
The Effects of Loading Rates on the Tensile Fracture Characteristics of Heat-treated Granite, Sandstone and Marble Based on Brazilian Splitting Tests |
| Author(s) |
Yamo Li (School of Mechanical Engineering, Sichuan Polytechnic University, Deyang, 618000 China, 582328474@qq.com)
Yang Liu (School of Architectural Engineering, Sichuan Polytechnic University, Deyang, 618000 China)
Peili Wu (College of Architecture and Engineering, Guangdong Baiyun University, Guangdong, 510000 China) |
| Abstract |
Elevated temperatures pose a significant challenge in deep rock engineering, where excavation rates critically impact construction progress and safety. This study investigates the effects of loading rates (0.05–0.4 mm/min) and 400°C thermal treatment on the tensile fracture characteristics of granite, marble, and sandstone using Brazilian splitting tests. Test results indicate that at 25°C, tensile strength increases with loading rates for all three rock types. Sandstone exhibits the highest sensitivity to loading rates variation, followed by granite, while marble shows the least responsiveness. After thermal treatment at 400°C, tensile strength decreased significantly in all samples. Marble demonstrated the greatest reduction (average decrease: 62.24%), followed by sandstone (37.14%) and granite (33.57%). Furthermore, post-treatment tensile strength decreased with increasing loading rates in marble and sandstone, but continued to increase in granite. High-precision scanning electron microscopy (SEM) revealed the underlying mechanisms: as loading rates increase, microfractures transition from intergranular (IG) to trans-crystalline (TC) patterns; concurrently, elevated temperatures alter mineral composition and microstructure. These findings provide a theoretical basis for safety protocols in deep rock engineering. |
| Keywords |
heat treatment of rocks, Brazilian splitting test, loading rates, tensile strength, tensile fracture |
| Received |
01 July 2025 | Revised |
05 August 2025 | Accepted |
19 August 2025 |
| Link to Fulltext |
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