Sprayed Concrete Solutions for Tunnelling Projects
Making Sprayed Concrete Simple for Tunnelling Projects
One partner. One process. One goal. Normet delivers a complete sprayed concrete (shotcrete) solution for underground construction. We integrate equipment, admixture chemistry (including accelerator dosing), nozzleman training, and digital verification to keep your ground support predictable and your team safe.
Whether NATM/SEM or SCL in rock or soft ground methodologies are chosen, we help you achieve specification-compliant primary linings, seamless interfaces with waterproofing, and durable secondary linings. By aligning batching, spraying and in-situ thickness control, we reduce rebound and overspray, improving work flow and reducing cycle times. Our process supports documentation, traceability and consistent quality – from first advance to final lining – so sprayed concrete stays repeatable, safer and measurably productive across the tunnel lifecycle.
How We Make Sprayed Concrete Simple
- A Single, Integrated Workflow: Plan → Mix → Spray → Monitor for consistent ground support
- Integrated Offering: Equipment, construction chemicals, and services designed to work together with primary and secondary lining applications
- Digital Solutions: SmartSpray and SmartScan for near-real-time control, QA/QC and thickness verification. Advanced IoT solutions and data analytics for process and material optimisation.
How we build sustainability in?
- Optimised mix designs to reduce cement content and CO2 emissions
- Lower rebound and material waste
- Efficient concrete sprayers for NATM/SEM and SCL headings
- Durable linings for long service life
Our Expertise and Technical Support
Normet’s value extends far beyond products:
Decades of Global Know-how
Proven best practices for ground support in rock and soft-ground tunnelling worldwide
A Complete Sprayed Concrete Solution Under One Roof
Equipment for Spraying and Transport
- High-performance spraying units for large, medium, to small cross sectional tunnels
- Efficient concrete transport
- Mechanised spraying manipulator for confined spaces
- Modular logistics platform for underground operations
Construction Chemicals
- Admixtures for optimal mix performance
- Accelerators for fast setting and early age strength development
- Fibres for enhanced-durability, ductility and crack resistance
Services
- Expert guidance during application
- Keep your equipment running at peak performance
- SmartSpray and SmartScan systems for safety, precision and QA/QC
- Analytics and remote monitoring service for process and material optimisation
Benefits for Your Tunnelling Project
- Repeatable quality through integrated solutions for ground support
- Safer operations with reduced rebound and optimised chemical use
- Measurable productivity with faster cycle times and lower material consumption
- Sustainability gains: Lower CO2 footprint, reduced waste, and longer-lasting tunnel linings
Sprayed Concrete Solutions
Success Stories
Gammon Construction Ltd
MTRC West Island Line Extension, Hong Kong - Sprayed Concrete Optimisation
Creating a watertight permanent sprayed concrete lining with a controlled drainage path for underground storage
Processes and products
Sprayed Concrete Process , Underground Logistics , TamSeal 800, TamCrete TopShot
MTRC West Island Line Extension, Hong Kong - Sprayed Concrete Optimisation ;Learn more
Skanska / Porr / A.Hak joint venture
River Humber Pipeline, United Kingdom - Sprayed Concrete, Rock and Ground Support Optimisation
Creating a cost-effective backfill grout mix to meet the client’s specifications
Processes and products
Sprayed Concrete Process , Rock and Ground Support , TamCem R, TamShot 10SS
River Humber Pipeline, United Kingdom - Sprayed Concrete, Rock and Ground Support Optimisation ;Learn more
Shimizu
Shin Tomei Project – Kawanishi Tunnel by Shimizu, Japan - Sprayed Concrete Optimisation
The first project in Japan to introduce liquid accelerator solution for tunnelling
Processes and products
Sprayed Concrete Process , TamShot 110AF, TamCem 60, TamCem 77TG
Shin Tomei Project – Kawanishi Tunnel by Shimizu, Japan - Sprayed Concrete Optimisation ;Learn more
Bouygues UCC Bessac JV
IDRIS MTS-01, Doha, Qatar - Sprayed Concrete - Optimisation
Versatile equipment range, technical site support and continuous product supply in difficult geological conditions
Processes and products
Sprayed Concrete Process , TamCrete MFC / SFC, TamCrete CG, TamCem HCA
IDRIS MTS-01, Doha, Qatar - Sprayed Concrete - Optimisation ;Learn more
Bam Ferrovial Kier JV
Crossrail C410 - Tottenham Court Road and Bond Street Station, United Kingdom - Sprayed Concrete Optimisation
Balancing Contractor’s needs with the Clients’s requirements beneath the heart of London
Processes and products
Sprayed Concrete Process , TamCem 60, TamCem HCA, TamShot 80AF
Crossrail C410 - Tottenham Court Road and Bond Street Station, United Kingdom - Sprayed Concrete Optimisation ;Learn more