Full-scale Engineered Barriers Experiment (FEBEX) II - Shotcrete Plug

A new technique for shotcreting the replacement plug for FEBEX II went through some successful trials before being used in the FEBEX experiment. The technique involves spraying a specialised concrete mixture over the existing bentonite.


Trials of the new technique of shotcreting
 
Spraying the specialised concrete mixture over the bentonite
     

View of the final plug
 
A closer view of the final plug

 

Full-scale High Level Waste Engineered Barriers (FEBEX) - Excavation Phase

The GTS underground facilities are also available to interested 3rd parties for underground testing and research. The GTS offers cost-effective access to a fully developed, well characterised underground research facility with round the year logistical support - please contact Dr. Ingo Blechschmidt, Head of the Grimsel Test Site, for further details.