Preparation and properties of pea-gravel grouting with sodium bentonite for hydraulic shield tunnel

Preparation and properties of pea-gravel grouting with sodium bentonite for hydraulic shield tunnel

Abstract Pea-gravel grouting (PGG) is a composite material backfilled between segment and surrounding rock of a shield tunnel, requiring balanced mechanical properties and impermeability. However, the practice always faces an issue of the defects of harden PGG with local cavity, less dense or insuff...

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Bibliographic Details
Main Authors: Changyong Li, Yabin Yang, Bo Zhou, Kele Wang, Yintao He, Shunbo Zhao
Format: Article
Language:English
Published: Nature Portfolio 2025-07-01
Series:Scientific Reports
Subjects:
Hydraulic shield tunnel
Pea-gravel grouting
Grouting slurry
Sodium bentonite
w/b
Mechanical property
Online Access:https://doi.org/10.1038/s41598-025-12061-z
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https://doi.org/10.1038/s41598-025-12061-z

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