TBM (Tunnel Boring Machine) Products

A range of environmentally friendly soil conditioners for different soil types and water conditions designed to reduce wear and improve the performance of EPB TBMs.

Applications

TBM Soil Conditioning Foams Anti-clogging Agents Soil Conditioning Polymers Tail Seal Grease Annulus Grouting Anti-dust & Anti-Wear Additives TBM Main Bearing Grease

TBM Soil Conditioning Foams

Standard and polymerised soil conditioners are normally used for silty to gravelly sands. Different foam types may be used depending on the nature of the soil and its humidity or the groundwater pressure.

TamSoil 195CF

Silty sand to sandy clay TBM soil conditioner

TamSoil 200CF

TBM soil conditioning foam for wet to sandy clay

TamSoil 260CF

Polymer modified soil conditioning foam for TBMs

TamSoil 265CF

Polymerised soil conditioning foam for TBMs

TamSoil 267CF

Polymer modified soil conditioning system for TBMs

Anti-clogging Agents

Anti-clogging agents are used for clay and clayey soils that significantly reduce clogging and re-agglomeration effects. Due to the complex nature of clay and clayey soils, different clay formations also require different anti-clay agents.

TamSoil 281AC

Soil conditioning foam with improved anti-clogging properties

TamSoil 285AC

Soil conditioning anti-clogging non-toxic foam

TamSoil 287AC

Soil conditioning anti-clay foam for TBMs

TamSoil DSA2

Dispersing slurry TBM additive

Soil Conditioning Polymers

Polymers are generally used when tunnelling through water-bearing grounds, where the excavated soil becomes very liquid and difficult for the screw conveyor and conveyor belt to handle.

TamSoil 500CP

Liquid polymer soil conditioner for EPB TBMs

TamSoil 600CP

TamSoil 700CP

Water binding polymer for TBM

TamSoil 1000CP

Eco-friendly water biding polymer for EPB

Tail Seal Grease

Normet offers a range of tail seal greases for shielded TBM use that cover first fill, high performance and economic driving grade applications. First fill grade tail seal grease is pumped into the wire brushes before the TBM starts up. Once applied inside the brushes, the first fill grade protects them against wear, water soil and annulus grout ingress while keeping the brushes highly flexible for protect long-term sealing. Driving grade tail seal grease is pumped into the sealant chambers as the TBM advances.

TamSeal TG91

High performance tail sealant for TBMs (Driving Grade)

TamSeal TG92

1st fill tail sealant for TBMs

TamSeal TG66

Economic driving grade tail seal grease for TBMs

TamSeal ES90

Tail emergency sealant for shielded TBMs

Annulus Grouting

Normet have a complete range of annulus grout admixtures to suit all TBM backfill annulus grouting applications, together with experts in the field to support you all the way. Efficient and trouble-free annulus grouting is essential to maximise TBM uptime, reduce settlement risk, fully embed the lining to transmit forces around the ring and, last but not least, protect the lining and gaskets. Normet can provide guidance and support to reduce the learning curve and build confidence in the team.

TamCem R

Set retarding plasticising admixture for TBM backfill grout

TamShot 10SS

Sprayed concrete and annulus grout accelerator

TamCem 8BFG

Special plasticiser / Retarder for TBM backfill grouts

TamCem 9BFG

Set retarding plasticising admixture for grouts, incorporating a strength enhancer

Anti-dust & Anti-Wear Additives

Normet TBM anti-dust and anti-wear agents are designed to significantly reduce disc cutter wear, temperatures, cutter blockages and dust levels.

TamSoil 800AD

Anti-dust agent for hard rock TBMs

TamSoil 860AW

Anti-wear agent for Tunnel Boring Machines

TBM Main Bearing Grease

TBM main bearing grease effectively protects the TBM main bearings by preventing the ingress of soil, water or dust through the main bearing seals. Normet’s main bearing sealing and lubricating greases are carefully designed for exactly this purpose. Normet TBM main bearing greases combine good adhesion and cohesion properties with excellent lubrication properties. They prevent ingress of soil and water.

TamGrease BS1

Main bearing sealing grease for TBMs

TamGrease BL11

Multi-purpose EP2 grease for TBMs

TamGrease BL12

Biodegradable EP2 grease for TBMs