Shield-driven tunnels are common features of such construction works as subways, water supply and sewer systems in cities, tunnels, cable lying, etc. Recent trends in shield-driven tunnels have been towards new applications, increase and decrease in section size, and also construction at greater depths or under the seabed where measures against highpressure water are of vital importance. COSMOswell is a hydrophilic high quality product for sealing all joints in prefabricated concrete constructions.
COSMO SWELL HYDROPHILIC RUBBER
Shield-driven tunnels (TBM) are currently being used for construction work at even greater depths and higher water-pressure environments. The resultant need for improved water sealing characteristics is best met by water-expanding sealant materials, which swell on contact with water.
NEW TYPE OF RUBBER SEAL
COSMOswell is a new expanding rubber sealing material that is intended mainly for sealing of joints in tunnels and shafts. It has been developed for the successfully use in tunnels in pressure conditions up to 5 bar water pressure.