Research on the Creep Damage Characteristics of Acid-leached Sandstone

DOI

10.2991/978-94-6463-726-7_51How to use a DOI?

Keywords

sandstone; acidic dissolution; creep; damage variable

Abstract

The dissolution of rock masses in acidic environments can lead to the degradation of pore structures and a reduction in mechanical strength, consequently making the rock mass more susceptible to creep instability. To analyze the creep damage characteristics of acid-leached sandstone under acidic conditions, a seepage erosion device was utilized to prepare acid-leached sandstone specimens. Subsequently, uniaxial creep tests were conducted on the leached specimens, and a damage variable was defined from an energy perspective based on thermodynamic principles. The results indicate that after 9 days of acid leaching, the porosity of the specimens increased by 6.0%, while the creep failure strength decreased with prolonged acid leaching time, leading to an earlier onset of the accelerated creep stage. Compared to traditional models, the newly defined damage variable simplifies the resolution of creep model parameters. The findings provide theoretical support for the long-term stability assessment of rock masses subjected to erosion in acidic environments.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Jiyou Chen
AU  - Chuang Sun
PY  - 2025
DA  - 2025/06/13
TI  - Research on the Creep Damage Characteristics of Acid-leached Sandstone
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 520
EP  - 526
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_51
DO  - 10.2991/978-94-6463-726-7_51
ID  - Chen2025
ER  -