Research on the Performance of Cement-Sodium Silicate Grout for Synchronous Grouting in Shield Tunnel

DOI

10.2991/978-94-6463-449-5_61How to use a DOI?

Keywords

shield tunnel; synchronous grouting; cement-sodium silicate grout; grout properties

Abstract

Compared to single-fluid grout, cement-sodium silicate grout have the characteristics of shorter gel time and faster early strength. Based on filling the annular void at the shield tail, they can effectively prevent the flotation of segments. Therefore, it is necessary to analyze the performance of cement-sodium silicate grout and determine the optimal ratio for construction. To investigate the grout performance under different water-cement ratios and the volume ratio of liquid A to liquid B, this paper designed indoor grout experiments with different grout ratios and tested the gel time, initial setting time, final setting time, and compressive strength of the grout. The main conclusions are as follows: the gel time of the grout is positively correlated with the water-cement ratio and negatively correlated with the volume ratio of the grout; the initial setting time and final setting time of the grout are positively correlated with the water-cement ratio and the volume ratio of the grout; the strength of the grout is negatively correlated with the water-cement ratio and the volume ratio of the grout. Furthermore, by conducting function fitting for the gel time, initial setting time, final setting time, and compressive strength of the grout under different water-cement ratios and grout volume ratios, this study provides a basis for selecting ratios for subsequent projects using cement-sodium silicate grout and offers scientific guidance for grout adjustment during tunnel construction.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Fanteng Meng
AU  - Nan Qin
AU  - Wenqing Wu
AU  - Xiaobo Shan
AU  - Chaoran Li
PY  - 2024
DA  - 2024/06/30
TI  - Research on the Performance of Cement-Sodium Silicate Grout for Synchronous Grouting in Shield Tunnel
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 621
EP  - 631
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_61
DO  - 10.2991/978-94-6463-449-5_61
ID  - Meng2024
ER  -