Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures
Abstract To study the effect of high temperature on the mechanical properties of red sandstone, YNS600 electro-hydraulic servo universal testing machine and pneumatic separating Hopkinson press bar (SHPB) device were respectively used to conduct static and dynamic load loading tests on red sandstone...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-04-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-93969-4 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850269851127382016 |
|---|---|
| author | Haixiao Lin Weidong Liu Duan Zhang Bin Chen Xinsheng Zhang |
| author_facet | Haixiao Lin Weidong Liu Duan Zhang Bin Chen Xinsheng Zhang |
| author_sort | Haixiao Lin |
| collection | DOAJ |
| description | Abstract To study the effect of high temperature on the mechanical properties of red sandstone, YNS600 electro-hydraulic servo universal testing machine and pneumatic separating Hopkinson press bar (SHPB) device were respectively used to conduct static and dynamic load loading tests on red sandstone after 500~1000 ℃ action, and X diffraction detection. The damage pattern and mechanical property index changes before and after high temperature action were compared, and the relationship between mineral composition, microstructure and mechanical parameters of the specimens and temperature was analyzed, and a theoretical model was constructed. With the increase of temperature, the peak strength and elastic modulus under static and dynamic loading decreased significantly, and compared with the static stress-strain curve, the dynamic stress-strain curve did not have an obvious compaction phase, and the mass loss rate, volume expansion rate, and longitudinal wave velocity attenuation rate increased above 600 ℃. Minerals such as zeolite and pyrite within the red sandstone specimen gradually reacted after high temperature. The theoretical model explains the degradation mechanism of the mechanical properties of red sandstone under the action of idealized high temperature. The research results can provide a reliable scientific basis for the assessment and prediction of rock engineering after high-temperature fire. |
| format | Article |
| id | doaj-art-7d0d73b52edd4cc48263daf6467a6002 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-7d0d73b52edd4cc48263daf6467a60022025-08-20T01:52:55ZengNature PortfolioScientific Reports2045-23222025-04-0115112210.1038/s41598-025-93969-4Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperaturesHaixiao Lin0Weidong Liu1Duan Zhang2Bin Chen3Xinsheng Zhang4School of Civil Engineering, Henan Polytechnic UniversitySchool of Civil Engineering, Henan Polytechnic UniversitySchool of Civil Engineering, Henan Polytechnic UniversitySchool of Civil Engineering, Henan Polytechnic UniversitySchool of Civil Engineering, Henan Polytechnic UniversityAbstract To study the effect of high temperature on the mechanical properties of red sandstone, YNS600 electro-hydraulic servo universal testing machine and pneumatic separating Hopkinson press bar (SHPB) device were respectively used to conduct static and dynamic load loading tests on red sandstone after 500~1000 ℃ action, and X diffraction detection. The damage pattern and mechanical property index changes before and after high temperature action were compared, and the relationship between mineral composition, microstructure and mechanical parameters of the specimens and temperature was analyzed, and a theoretical model was constructed. With the increase of temperature, the peak strength and elastic modulus under static and dynamic loading decreased significantly, and compared with the static stress-strain curve, the dynamic stress-strain curve did not have an obvious compaction phase, and the mass loss rate, volume expansion rate, and longitudinal wave velocity attenuation rate increased above 600 ℃. Minerals such as zeolite and pyrite within the red sandstone specimen gradually reacted after high temperature. The theoretical model explains the degradation mechanism of the mechanical properties of red sandstone under the action of idealized high temperature. The research results can provide a reliable scientific basis for the assessment and prediction of rock engineering after high-temperature fire.https://doi.org/10.1038/s41598-025-93969-4Rock damageRock stressSeepageCoupling |
| spellingShingle | Haixiao Lin Weidong Liu Duan Zhang Bin Chen Xinsheng Zhang Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures Scientific Reports Rock damage Rock stress Seepage Coupling |
| title | Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures |
| title_full | Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures |
| title_fullStr | Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures |
| title_full_unstemmed | Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures |
| title_short | Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures |
| title_sort | study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures |
| topic | Rock damage Rock stress Seepage Coupling |
| url | https://doi.org/10.1038/s41598-025-93969-4 |
| work_keys_str_mv | AT haixiaolin studyonthedegradationmechanismofmechanicalpropertiesofredsandstoneunderstaticanddynamicloadingafterdifferenthightemperatures AT weidongliu studyonthedegradationmechanismofmechanicalpropertiesofredsandstoneunderstaticanddynamicloadingafterdifferenthightemperatures AT duanzhang studyonthedegradationmechanismofmechanicalpropertiesofredsandstoneunderstaticanddynamicloadingafterdifferenthightemperatures AT binchen studyonthedegradationmechanismofmechanicalpropertiesofredsandstoneunderstaticanddynamicloadingafterdifferenthightemperatures AT xinshengzhang studyonthedegradationmechanismofmechanicalpropertiesofredsandstoneunderstaticanddynamicloadingafterdifferenthightemperatures |