Optimization of Thixotropic Slurry Ratio and Drag Reduction Effect Test for Circular Pipe-Jacking Construction in Pebble Stratum.
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| Title: | Optimization of Thixotropic Slurry Ratio and Drag Reduction Effect Test for Circular Pipe-Jacking Construction in Pebble Stratum. |
|---|---|
| Authors: | Wang, Yongzhi1 (AUTHOR), Chen, Rui1,2 (AUTHOR), Wang, Anming1,2 (AUTHOR) wam992001@163.com, Chen, Wenli2 (AUTHOR), Ren, Zeyu2 (AUTHOR), Li, Xiaogen2 (AUTHOR), Liu, Pinghui2 (AUTHOR) |
| Source: | Materials (1996-1944). Mar2026, Vol. 19 Issue 6, p1148. 19p. |
| Subjects: | Bentonite, Slurry, Pebbles, Friction velocity, Fluid mechanics, Trenchless construction |
| Geographic Terms: | China |
| Abstract: | Highlights: What are the main findings? The optimal thixotropic slurry materials and mix proportions (including bentonite, shell powder, etc.) applicable to pipe-jacking construction in pebble strata were established. The porous structure of shell powder significantly enhances the slurry's sealing performance and stratum stability. The optimized slurry can reduce the soil friction coefficient by about 35.6%, effectively addressing the issue of high jacking resistance. What are the implications of the main findings? An economical and efficient slurry optimization scheme is proposed, utilizing conventional materials such as shell powder, facilitating widespread application. It simultaneously addresses challenges in pebble–gravel strata, including high friction, slurry leakage, and stratum instability. It provides a successful case for the design of "site-specific slurry" in complex strata, promoting the development of refined construction technologies. Circular pipe-jacking construction in gravel strata faces significant technical challenges, including high frictional resistance, elevated permeability, and susceptibility to collapse. Optimizing the formulation of thixotropic slurry is crucial for improving the construction quality and efficiency of such projects. This study, based on the Ruyang Water Supply Project of the North Main Canal in the Qianping Irrigation Area, Henan Province, China, systematically investigated slurry formulation using bentonite, soda ash, sodium carboxymethyl cellulose (CMC), polyacrylamide (PAM), and shell powder as raw materials. An orthogonal experimental design was employed to optimize the mix proportions, and the friction-reduction performance was validated through drag-friction model tests. The results indicate that the optimal slurry formulation is: bentonite 8%, soda ash 0.3%, CMC 0.2%, PAM 0.15%, shell powder 4%, and water 87.35%. This formulation exhibits excellent fluidity and thixotropy, facilitating the formation of a stable slurry film. Consequently, the friction coefficient between concrete specimens and gravel soil was reduced by 35.6%. The inclusion of shell powder significantly enhanced the slurry's cohesiveness and improved the anti-seepage capacity of the surrounding stratum due to its filling effect. The optimized thixotropic slurry effectively mitigates frictional resistance during pipe jacking in gravel strata and enhances the formation's resistance to collapse. The findings of this study provide a viable technical reference for pipe-jacking projects under similar geological conditions. [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: 192591581 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optimization of Thixotropic Slurry Ratio and Drag Reduction Effect Test for Circular Pipe-Jacking Construction in Pebble Stratum. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Yongzhi%22">Wang, Yongzhi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Rui%22">Chen, Rui</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Anming%22">Wang, Anming</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wam992001@163.com</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Wenli%22">Chen, Wenli</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ren%2C+Zeyu%22">Ren, Zeyu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xiaogen%22">Li, Xiaogen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Pinghui%22">Liu, Pinghui</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Mar2026, Vol. 19 Issue 6, p1148. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Bentonite%22">Bentonite</searchLink><br /><searchLink fieldCode="DE" term="%22Slurry%22">Slurry</searchLink><br /><searchLink fieldCode="DE" term="%22Pebbles%22">Pebbles</searchLink><br /><searchLink fieldCode="DE" term="%22Friction+velocity%22">Friction velocity</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+mechanics%22">Fluid mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Trenchless+construction%22">Trenchless construction</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Highlights: What are the main findings? The optimal thixotropic slurry materials and mix proportions (including bentonite, shell powder, etc.) applicable to pipe-jacking construction in pebble strata were established. The porous structure of shell powder significantly enhances the slurry's sealing performance and stratum stability. The optimized slurry can reduce the soil friction coefficient by about 35.6%, effectively addressing the issue of high jacking resistance. What are the implications of the main findings? An economical and efficient slurry optimization scheme is proposed, utilizing conventional materials such as shell powder, facilitating widespread application. It simultaneously addresses challenges in pebble–gravel strata, including high friction, slurry leakage, and stratum instability. It provides a successful case for the design of "site-specific slurry" in complex strata, promoting the development of refined construction technologies. Circular pipe-jacking construction in gravel strata faces significant technical challenges, including high frictional resistance, elevated permeability, and susceptibility to collapse. Optimizing the formulation of thixotropic slurry is crucial for improving the construction quality and efficiency of such projects. This study, based on the Ruyang Water Supply Project of the North Main Canal in the Qianping Irrigation Area, Henan Province, China, systematically investigated slurry formulation using bentonite, soda ash, sodium carboxymethyl cellulose (CMC), polyacrylamide (PAM), and shell powder as raw materials. An orthogonal experimental design was employed to optimize the mix proportions, and the friction-reduction performance was validated through drag-friction model tests. The results indicate that the optimal slurry formulation is: bentonite 8%, soda ash 0.3%, CMC 0.2%, PAM 0.15%, shell powder 4%, and water 87.35%. This formulation exhibits excellent fluidity and thixotropy, facilitating the formation of a stable slurry film. Consequently, the friction coefficient between concrete specimens and gravel soil was reduced by 35.6%. The inclusion of shell powder significantly enhanced the slurry's cohesiveness and improved the anti-seepage capacity of the surrounding stratum due to its filling effect. The optimized thixotropic slurry effectively mitigates frictional resistance during pipe jacking in gravel strata and enhances the formation's resistance to collapse. The findings of this study provide a viable technical reference for pipe-jacking projects under similar geological conditions. [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/ma19061148 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 1148 Subjects: – SubjectFull: Bentonite Type: general – SubjectFull: Slurry Type: general – SubjectFull: Pebbles Type: general – SubjectFull: Friction velocity Type: general – SubjectFull: Fluid mechanics Type: general – SubjectFull: Trenchless construction Type: general – SubjectFull: China Type: general Titles: – TitleFull: Optimization of Thixotropic Slurry Ratio and Drag Reduction Effect Test for Circular Pipe-Jacking Construction in Pebble Stratum. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Yongzhi – PersonEntity: Name: NameFull: Chen, Rui – PersonEntity: Name: NameFull: Wang, Anming – PersonEntity: Name: NameFull: Chen, Wenli – PersonEntity: Name: NameFull: Ren, Zeyu – PersonEntity: Name: NameFull: Li, Xiaogen – PersonEntity: Name: NameFull: Liu, Pinghui IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 6 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
