Tunnel Boring Machine

Improve operational efficiency in TBM excavation

Master Builders Solutions' comprehensive tunnel boring machine products improve operational efficiency in soft ground and hard rock TBM excavation. We help you meet your biggest challenges from the start of your project by offering:

Laboratory resources for project specific testing
Technical consulting for every stage of your project
Global solutions

Tunnel Boring Machine Products

Abrasion Resistance

MasterRoc ABR 7

Reduces abrasive wear of cutting equipment | Improves cooling of cutter head | Reduces dust formation

Annular Grout Additive

Set Time Retarding and Hydration Control Admixtures

MasterRoc AGA 41

High-performance and low viscosity grout accelerator for TBM annulus grouting | Grout mixes with or without cementitious binders | Creates high early strength

MasterRoc AGA 41S

High-performance and low viscosity grout accelerator for TBM annulus grouting | Easy to mix into grout, even at low temperatures | Fast and adjustable setting times

Greases, Sealants & Lubricants

MasterRoc BSG 1

Extruder sealant for TBM, protects main bearing from water, soil, dust | Anti-washout and adhesion to metal or concrete surfaces

MasterRoc EPB 11

Multi-purpose EP2 Lithium-thickened lubricating grease, for lubrication of TBM main bearing and screw conveyor assembly | Mechanical stability, load carrying capacity, corrosion protection

MasterRoc TSG 6

Tail shield sealant for shielded TBM | Resists water and ground pressures | Excellent pumping properties, adheres to most metal or concrete surfaces

MasterRoc TSG 7

Tail-shield sealant formulated as first fill to protect the TBM before use of pumpable sealants, such as MasterRoc TSG 6

Soil Conditioning

MasterRoc ACP 214

Breaks down clay, reduces its stickiness and adhesiveness | Reduces clogging and adhesion on the cutterhead | Improves and homogenizes soil consistency

MasterRoc ACP 127

Anti-clay polymer for clayey soils | Mobilizes clay particles to create easily-excavated soil material

MasterRoc ACP 211

Anti-clay polymer for heavy clay soils | Improves soil consistency | Effectively reduces blockages in cutter heads

MasterRoc SLF 47

Eco-compatible polymer-reinforced foaming agent | Reduces permeability and increases sealing of the face | Lowers inner friction and abrasiveness of soil

MasterRoc SLF 50

Generates super fine and highly stable foam with long half-life | Improves soil behavior and creates plastic deformation properties in soil | Provides controlled support pressure and increased face stability, increases TBM advance speed

MasterRoc SLP 1

Liquid soil lubricating polymer specially designed for Earth-Pressure Balance (EPB) | Suitable to ground containing fine sand, silt or clay with high water content | No mixing equipment required

MasterRoc ACP 143

A liquid polymer, specially designed for highly cohesive and adhesive soils such as marl, silts, and clays that contain fine particles.

Super Water Absorber

MasterRoc SWA 705

Water-binding agent, increases soil plasticity and cohesion | Increases cohesion of coarse sands and gravels | Improves the yield and filter cake properties of bentonite slurries

MasterRoc SWA 710

Powerful liquid thickener for use in ground and slurry conditioning | Effective in high ground-water pressures, poorly graded ground, water saturated ground | Improves yield and filter cake properties of bentonite slurries