Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment
The influence of acid solution and immersion time on the physicomechanical properties of sandstone is investigated. Uniaxial compression tests on sandstone samples are conducted to determine the variations of relative mass, deformation, and strength characteristics of sandstone subjected to differen...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5784831 |
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| author | Shuguang Li Runke Huo Bo Wang Zhenzhong Ren Yu Ding Meiting Qian Tian Qiu |
| author_facet | Shuguang Li Runke Huo Bo Wang Zhenzhong Ren Yu Ding Meiting Qian Tian Qiu |
| author_sort | Shuguang Li |
| collection | DOAJ |
| description | The influence of acid solution and immersion time on the physicomechanical properties of sandstone is investigated. Uniaxial compression tests on sandstone samples are conducted to determine the variations of relative mass, deformation, and strength characteristics of sandstone subjected to different pH sulfuric acid corrosion values. The changes of pH and Mg2+ and Ca2+ concentration of immersion solutions are monitored during soaking. The corrosion mechanism of sandstone attacked by the acid solution is discussed with the results of SEM tests. Based on the nondestructive CT scanning test, the damage variables of acid-corroded sandstone are deduced, and the damage degree of sandstone is quantitatively analyzed. The results indicate that the deformation characteristics of sandstone samples under acid attack are characterized by the softening of rock, and the softening degree gradually increases with the increase of the acidity and the soaking time. The peak strength of sandstone samples declines as soaking time extends. The chemical effects lead to a large amount of dissolution of the rock mineral assemblage, resulting in the large-scale development of the pores inside the rock, which changes the macroscopic mechanical properties. The damage variables of acid corrosion sandstone based on CT numbers are deduced, and the quantitative relationship between damage variables and immersion time is established, which provides a basis for constructing a damage constitutive model of sandstone in the acidic environment. |
| format | Article |
| id | doaj-art-3a57cced960b4284b59799322d2d56ea |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-3a57cced960b4284b59799322d2d56ea2025-08-20T02:08:00ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/57848315784831Experimental Study on Physicomechanical Properties of Sandstone under Acidic EnvironmentShuguang Li0Runke Huo1Bo Wang2Zhenzhong Ren3Yu Ding4Meiting Qian5Tian Qiu6School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaThe influence of acid solution and immersion time on the physicomechanical properties of sandstone is investigated. Uniaxial compression tests on sandstone samples are conducted to determine the variations of relative mass, deformation, and strength characteristics of sandstone subjected to different pH sulfuric acid corrosion values. The changes of pH and Mg2+ and Ca2+ concentration of immersion solutions are monitored during soaking. The corrosion mechanism of sandstone attacked by the acid solution is discussed with the results of SEM tests. Based on the nondestructive CT scanning test, the damage variables of acid-corroded sandstone are deduced, and the damage degree of sandstone is quantitatively analyzed. The results indicate that the deformation characteristics of sandstone samples under acid attack are characterized by the softening of rock, and the softening degree gradually increases with the increase of the acidity and the soaking time. The peak strength of sandstone samples declines as soaking time extends. The chemical effects lead to a large amount of dissolution of the rock mineral assemblage, resulting in the large-scale development of the pores inside the rock, which changes the macroscopic mechanical properties. The damage variables of acid corrosion sandstone based on CT numbers are deduced, and the quantitative relationship between damage variables and immersion time is established, which provides a basis for constructing a damage constitutive model of sandstone in the acidic environment.http://dx.doi.org/10.1155/2018/5784831 |
| spellingShingle | Shuguang Li Runke Huo Bo Wang Zhenzhong Ren Yu Ding Meiting Qian Tian Qiu Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment Advances in Civil Engineering |
| title | Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment |
| title_full | Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment |
| title_fullStr | Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment |
| title_full_unstemmed | Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment |
| title_short | Experimental Study on Physicomechanical Properties of Sandstone under Acidic Environment |
| title_sort | experimental study on physicomechanical properties of sandstone under acidic environment |
| url | http://dx.doi.org/10.1155/2018/5784831 |
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