A Workability Characterization of Innovative Rubber Concrete as a Grouting Material.
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| Title: | A Workability Characterization of Innovative Rubber Concrete as a Grouting Material. |
|---|---|
| Authors: | Lu, Yi1 (AUTHOR) luyi@gzhu.edu.cn, Li, Cong2 (AUTHOR) 2112016162@e.gzhu.edu.cn, Zhang, Xiaoyu1 (AUTHOR) xiaoyu@gzhu.edu.cn, Huang, Xiangyun2 (AUTHOR) eertchxy@gzhu.edu.cn, Zhao, Zhongyin3 (AUTHOR) shuimojing2022@163.com |
| Source: | Materials (1996-1944). Aug2022, Vol. 15 Issue 15, p5319-5319. 14p. |
| Subjects: | Grouting, Tunnel design & construction, Porous materials, Slurry, Polyvinyl alcohol, Rubber, Concrete |
| Abstract: | The aim of this study is to assess the workability of an innovative rubber concrete to fill in the gaps in a shield tunnel construction. This grouting material includes porous sand, PVA (polyvinyl alcohol) fiber, cement, and rubber. One advantage of the material is its high toughness, which is good for the postfailure stage of an earthquake event. Evaluations were carried out on the physical properties in terms of the slurry density, consistency, fluidity, bleeding rate, consolidation shrinkage rate, setting time, and unconfined compressive strength (UCS) (i.e., 3 and 28 days). The toughness index was also introduced to evaluate the performance at the postfailure stage. The results demonstrate that the toughness index will increase as the rubber content increases. It increases from 1.0 at 0% to 1.7 at 80% rubber content (28 days' curing) and from 1.2 at 0% to 2.2 at 80% rubber content (3 days' curing). The increase in fiber content and fiber length will also increase the toughness index as the fiber will enhance the tensile strength of the matrix. The results show that when the fiber content increases from 0% to 1%, the toughness index increases from 1 to 7 (28 days' curing) and from 1.1 to 10 (3 days' curing). Similarly, if the fiber content or fiber length is above the optimum level, the UCS of the material will be compromised. The optimum fiber content is 0.8%, and the optimum fiber length is 6 mm to 9 mm. This study suggests that the balance of physical properties should be considered in designing a satisfactory grouting material based on the specific purpose of the engineering practice. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI 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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| Header | DbId: egs DbLabel: Engineering Source An: 158518937 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Workability Characterization of Innovative Rubber Concrete as a Grouting Material. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lu%2C+Yi%22">Lu, Yi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luyi@gzhu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Cong%22">Li, Cong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> 2112016162@e.gzhu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xiaoyu%22">Zhang, Xiaoyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xiaoyu@gzhu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huang%2C+Xiangyun%22">Huang, Xiangyun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> eertchxy@gzhu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Zhongyin%22">Zhao, Zhongyin</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> shuimojing2022@163.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Aug2022, Vol. 15 Issue 15, p5319-5319. 14p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Grouting%22">Grouting</searchLink><br /><searchLink fieldCode="DE" term="%22Tunnel+design+%26+construction%22">Tunnel design & construction</searchLink><br /><searchLink fieldCode="DE" term="%22Porous+materials%22">Porous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Slurry%22">Slurry</searchLink><br /><searchLink fieldCode="DE" term="%22Polyvinyl+alcohol%22">Polyvinyl alcohol</searchLink><br /><searchLink fieldCode="DE" term="%22Rubber%22">Rubber</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete%22">Concrete</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The aim of this study is to assess the workability of an innovative rubber concrete to fill in the gaps in a shield tunnel construction. This grouting material includes porous sand, PVA (polyvinyl alcohol) fiber, cement, and rubber. One advantage of the material is its high toughness, which is good for the postfailure stage of an earthquake event. Evaluations were carried out on the physical properties in terms of the slurry density, consistency, fluidity, bleeding rate, consolidation shrinkage rate, setting time, and unconfined compressive strength (UCS) (i.e., 3 and 28 days). The toughness index was also introduced to evaluate the performance at the postfailure stage. The results demonstrate that the toughness index will increase as the rubber content increases. It increases from 1.0 at 0% to 1.7 at 80% rubber content (28 days' curing) and from 1.2 at 0% to 2.2 at 80% rubber content (3 days' curing). The increase in fiber content and fiber length will also increase the toughness index as the fiber will enhance the tensile strength of the matrix. The results show that when the fiber content increases from 0% to 1%, the toughness index increases from 1 to 7 (28 days' curing) and from 1.1 to 10 (3 days' curing). Similarly, if the fiber content or fiber length is above the optimum level, the UCS of the material will be compromised. The optimum fiber content is 0.8%, and the optimum fiber length is 6 mm to 9 mm. This study suggests that the balance of physical properties should be considered in designing a satisfactory grouting material based on the specific purpose of the engineering practice. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI 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: 10.3390/ma15155319 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 5319 Subjects: – SubjectFull: Grouting Type: general – SubjectFull: Tunnel design & construction Type: general – SubjectFull: Porous materials Type: general – SubjectFull: Slurry Type: general – SubjectFull: Polyvinyl alcohol Type: general – SubjectFull: Rubber Type: general – SubjectFull: Concrete Type: general Titles: – TitleFull: A Workability Characterization of Innovative Rubber Concrete as a Grouting Material. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lu, Yi – PersonEntity: Name: NameFull: Li, Cong – PersonEntity: Name: NameFull: Zhang, Xiaoyu – PersonEntity: Name: NameFull: Huang, Xiangyun – PersonEntity: Name: NameFull: Zhao, Zhongyin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 15 – Type: issue Value: 15 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
