MasterRoc TSG 7

First Fill Tail Sealant for Shielded Tunnel Boring Machines (TBM)

Material Description

MasterRoc TSG 7 is a fist fill tail sealant for shielded tunnel boring machines. It effectively seals the gap between the shield and concrete segments to prevent the ingress of water, grout and soil. It is formulated to resist high water and grout pressures, and has excellent adhesion to all types of surfaces. It is designed as a first fill sealant.

Areas of Application

Tunneling with shielded mechanized tunnel boring machines (TBMs) equipped with a tail seal brush system.

Characteristics and Benefits

Operational

• Excellent sealing properties

• Excellent adhesion to any metal or concrete surfaces

• Good pumping properties

• Pumping system recommended to be close to the application location

Technical

• Excellent consistency and sealing properties

• Proper adhesion to any metal or concrete surfaces

• Very high washout resistance

• Non-miscible with annulus grout