Influence of bleeding characteristic of cement slurry on performance of penetration grouted sand

Penetration grouting is a common grouting method in which the grouting material is injected into the pore spaces of the ground. Bleeding of cement slurry reduces the effectiveness of penetration grouting operations. In this paper, a series of experiments were carried out with water-cement ratio, cur...

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Bibliographic Details
Published in:Arabian journal of geosciences 2023-03, Vol.16 (3), Article 152
Main Authors: Zhang, Lianzhen, Han, Xu, Zhang, Qingsong, Yang, Pei, Chu, Yuntian, Liu, Peixiu, Weng, Xianjie
Format: Article
Language:English
Subjects:
Attenuation
Bleeding
Cement
Concrete
Curing
Curing (processing)
Earth and Environmental Science
Earth science
Earth Sciences
Grouting
Microstructure
Original Paper
Sand
Scanning electron microscopy
Slurries
Water-cement ratio
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Summary:Penetration grouting is a common grouting method in which the grouting material is injected into the pore spaces of the ground. Bleeding of cement slurry reduces the effectiveness of penetration grouting operations. In this paper, a series of experiments were carried out with water-cement ratio, curing time, and sand size as experimental variables. The influence of slurry bleeding on the performance of penetration grouted sand after grouting diffusion process was investigated. Scanning Electron Microscope (SEM) was used to further examine the microstructure of grouted body after slurry bleeding. The performance attenuation rate was proposed to characterize the spatial attenuation degree of grouted sand performance under the action of slurry. Results show that the performance of penetration grouted sand is negatively correlated with water-cement ratio and sand particle size. The water-cement ratio has a significant influence on performance in space distribution of penetration grouted sand but curing time only affects the global performance of grouted sand.
ISSN:1866-7511
1866-7538
DOI:10.1007/s12517-022-11147-6