Properties and Application of Chemical Grouting Materials for Construction Joint Leakage

Table 10

Applicability analysis of grouting slurries for water leakage in construction joints of tunnel lining.

Grouting slurry	Blocking speed	Water blocking effect			Volume shrinkage		Adhesive strength		Injectability
					Water	Room	Water	Room
WPU	Fast	Yes	Yes	Yes	Good	Average	Average	Average	Good
OPU	Average	Yes	Yes	No		None		Average	Good
(WPU + OPU)	Average	Yes	Yes	Yes	Good	Average	Good	Good	Good
EP	Slow	No	No	No		None		Good	Good