Abstract
Rock mass is typically in contact with ground water for a long time in engineering projects. The hydro-physical–chemical effects between ground water and rock mass are important. A series of uniaxial creep tests were carried out on dry sandstone, saturated sandstone subjected to distilled water, and other five altered sandstones subjected to chemical solutions with different ion concentrations and pH values. The hydro-physical effects were studied by comparing the creep behavior of dry sandstone and saturated sandstone samples, and the hydro-chemical effects were explored by comparing the creep behavior of sandstone samples subjected to five different chemical solutions. Based on the internal variable theory, an internal variable creep model was proposed, in which the irreversible strain was considered as the internal variable. The fitting between the test data and the internal variable creep model indicated that the internal variable creep model was efficient to describe the creep properties of sandstones under complicated hydro-physical–chemical effects.
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Acknowledgements
The laboratory experiments were conducted in the Changjiang River Scientific Research Institute, and Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. The authors appreciate the support for the laboratory experiments.
Funding
The studies were financially supported by “the National Natural Science Foundation of China (No. 42177157),” “CRSRI Open Research Program (No. CKWV2019744/KY),” “Fundamental Research Funds for the Central Universities (No. N2101005),” and “Innovative Talents Support Program of Sciences & Technologies of Shenyang Young and Middle-aged Scientists (No. RC210405)”.
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Responsible Editor: Zeynal Abiddin Erguler
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Qiao, L., Wang, Z., Liu, J. et al. Creep property of altered sandstone due to hydro-physical-chemical effects: experimental observations and an internal variable creep model. Arab J Geosci 15, 839 (2022). https://doi.org/10.1007/s12517-022-09913-7
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DOI: https://doi.org/10.1007/s12517-022-09913-7