Study on anti-aging performance of water sealing and leak stopping materials for shield tunnel
ZHANG Tao
ZOU Jingdian
GUO Yanfeng
LI Wenqiu
YE Yuhang
CHEN Yi
Abstract：In order to address the issue of water leakage in shield tunnel segments,a new type of acrylic resin grouting mate-rial has been developed.The fundamental properties of the grouting material and its aging performance under thermal-oxidative conditions were studied.The results indicate that increasing the content of the accelerator and initiator shortens the gelation time,while the crosslinking agent and main agent are critical factors influencing the expansion ratio.The expansion ratio is negatively correlated with the main agent and first increases and then decreases with the crosslinking agent.High-temperature aging affects the mechanical properties of the grouting material-the higher the temperature and the longer the aging time,the greater the decline in mechanical performance.According to the aging model,the mechanical properties of acrylic resin grouting material will decline by no more than 20％after 100 years of use at 20 ℃,which proves that it has good aging resistance.
Keywords：shield tunnel segmentsleakage wateracrylic resinanti aging
Publication Date：2025-10-25
Online Publishing Date：2025-11-28(First online date of this platform, not the publication date of the document)
Pages：5( 84-88 )