Evolution of disintegration breakage of upper cretaceous red-bed mudstone in an acidic environment based on the Weibull model.
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| Title: | Evolution of disintegration breakage of upper cretaceous red-bed mudstone in an acidic environment based on the Weibull model. |
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| Authors: | Zhang, Guodong1 (AUTHOR), Ling, Sixiang1,2 (AUTHOR) lingsx@swjtu.edu.cn, Wu, Xiyong1,2 (AUTHOR) |
| Source: | Acta Geotechnica. Dec2023, Vol. 18 Issue 12, p6573-6593. 21p. |
| Subjects: | Mudstone, Particle size distribution, Acid rain, Fractal dimensions |
| Abstract: | The disintegration of red-bed mudstone is likely affected by the environment. Acid rain can significantly influence the disintegration process, but the corresponding mechanism remains to be studied. In this paper, the evolution of red-bed mudstone disintegration breakage was characterized through a static disintegration experiment under pH values ranging from 1.0 to 7.0 over 10 dry–wet cycles. Characteristics of the particle disintegration evolution in different acidic environments were expounded considering six disintegration indexes: the decay ratio, fractal dimension, particle gradation, grading entropy, disintegration ratio and relative breakage. Moreover, an evolution model of red-bed mudstone disintegration breakage was established based on the Weibull model with the shape (m) and slope (n) of the particle size distribution curve. With regard to the physical properties of the parameters, m and n represent the particle size of the mudstone particles most likely to disintegrate and the disintegration rate of the mudstone, respectively. The grading entropy was used to quantitatively characterize the degree of disorder and disintegration evolution of particles, which exhibited a downwards trend with an increasing number of dry–wet cycles and solution acidity. The disintegration ratio was applied to quantify the particle size distribution, which was then amended by replacing the initial gradation curve with the Weibull evolution model. The disintegration ratio was negatively correlated with both the number of cycles and solution acidity. Finally, relative breakage was proposed to describe the extent of rock disintegration under different dry–wet cycles, which was positively correlated with the number of cycles and solution acidity. The applicability of the Weibull model was verified via a comparison to the fractal model, and a three-segment fitting method based on three particle size groups was proposed to improve the fitting coefficient values of the fractal model. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Evolution of disintegration breakage of upper cretaceous red-bed mudstone in an acidic environment based on the Weibull model. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Guodong%22">Zhang, Guodong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ling%2C+Sixiang%22">Ling, Sixiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> lingsx@swjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Xiyong%22">Wu, Xiyong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Dec2023, Vol. 18 Issue 12, p6573-6593. 21p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mudstone%22">Mudstone</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+size+distribution%22">Particle size distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Acid+rain%22">Acid rain</searchLink><br /><searchLink fieldCode="DE" term="%22Fractal+dimensions%22">Fractal dimensions</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The disintegration of red-bed mudstone is likely affected by the environment. Acid rain can significantly influence the disintegration process, but the corresponding mechanism remains to be studied. In this paper, the evolution of red-bed mudstone disintegration breakage was characterized through a static disintegration experiment under pH values ranging from 1.0 to 7.0 over 10 dry–wet cycles. Characteristics of the particle disintegration evolution in different acidic environments were expounded considering six disintegration indexes: the decay ratio, fractal dimension, particle gradation, grading entropy, disintegration ratio and relative breakage. Moreover, an evolution model of red-bed mudstone disintegration breakage was established based on the Weibull model with the shape (m) and slope (n) of the particle size distribution curve. With regard to the physical properties of the parameters, m and n represent the particle size of the mudstone particles most likely to disintegrate and the disintegration rate of the mudstone, respectively. The grading entropy was used to quantitatively characterize the degree of disorder and disintegration evolution of particles, which exhibited a downwards trend with an increasing number of dry–wet cycles and solution acidity. The disintegration ratio was applied to quantify the particle size distribution, which was then amended by replacing the initial gradation curve with the Weibull evolution model. The disintegration ratio was negatively correlated with both the number of cycles and solution acidity. Finally, relative breakage was proposed to describe the extent of rock disintegration under different dry–wet cycles, which was positively correlated with the number of cycles and solution acidity. The applicability of the Weibull model was verified via a comparison to the fractal model, and a three-segment fitting method based on three particle size groups was proposed to improve the fitting coefficient values of the fractal model. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11440-023-01957-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 21 StartPage: 6573 Subjects: – SubjectFull: Mudstone Type: general – SubjectFull: Particle size distribution Type: general – SubjectFull: Acid rain Type: general – SubjectFull: Fractal dimensions Type: general Titles: – TitleFull: Evolution of disintegration breakage of upper cretaceous red-bed mudstone in an acidic environment based on the Weibull model. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhang, Guodong – PersonEntity: Name: NameFull: Ling, Sixiang – PersonEntity: Name: NameFull: Wu, Xiyong IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 18 – Type: issue Value: 12 Titles: – TitleFull: Acta Geotechnica Type: main |
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