Water control & void filling injection solutions
DE NEEF® injection resins are high‑performance waterproofing solutions with a proven service life of up to 120 years.
The new DE NEEF® resins maintain the same performance standards while reducing their carbon footprint by 5%-10% (kg CO2 e per kg of product) compared to the previous generation.
Our solutions:
- Specialty grouts: DE NEEF® HA Cut AF, DE NEEF® HA Cut CFL AF, TYTRO® SI 550/660, TYTRO® DN
Our services:
- Special techniques such as DE NEEF® Combi-Grouting and DE NEEF® Combiblock supported by our technical experts and extensive test data to deliver a proven and durable result.
Foam solutions
Reliable solutions for high & low permeability soils.
Our range of soil conditioning polymers increases TBM productivity, reduces wear and dust, and improves transport of excavated materials.
Our experts will recommend the most appropriate solution based on your project’s geology and the TBM technology.
Our solutions:
- Polymer based foams: Chryso® TBM SCF 250
- Anti-Clay foams: Chryso®TBM SCF 70/80/100
- Standard foams: Chryso®TBM SCF W200
- Anti-abrasion foam: Chryso®TBM AAF 50/100
Our services:
- Product selection and application training.
Main bearing and tail grease solutions
Safe, reliable and cost-effective solutions for brushes’ first or continuous fill.
A wide range of tail seal greases adapted to EPB, slurry or double shield TBM for optimum consumption and reliability.
They allow for high sealing performance even under brush stress. They are fire resistant and environmentally friendly.
Our solutions:
- Main Bearing Sealant Grease: Chryso®TBM GRS M
- Main Bearing Lubrication Greases: Chryso®TBM GRS L
- First Filling Tail Sealant Greases: Chryso®TBM GRS F 100
- Tail Sealant Greases: Chryso®TBM GRS 10/20
Our services:
- Product selection and application training
Backfill grout solutions
Reliable solutions for A+B grouts, traditional or hybrid Backfill.
Chryso®TBM SGS A+B Backfill Technology is a liquid admixture solution, providing outstanding stability and rapid gelling time to the mortar. It offers superior filling performance and longdistance pumping capabilities while reducing the environmental footprint of A+B grouts.
Our solutions:
- Backfill Grouts: Chryso®TBM, Chryso®TBM SGS, Conbextra AGB, Cebex 100/563
Our services:
- Definition of a tailored mix design
- Grout performance qualification trials
- On-site dispensing equipment and technical support
Leak sealing repair & waterproofing injection solutions
DE NEEF® injection resins are engineered to be non‑water‑soluble, eliminating dilution and leaching during and after injection. This allows for fast injection cycles while delivering long‑lasting performance.
Extensively tested, these resins have more than 90% closed cells and offer a proven service life of up to 120 years, ensuring durable and reliable results.
Our solutions:
- Injection resins: DE NEEF® HA FLEX LV AF, DE NEEF® HA FLEX SLV AF, DE NEEF® HA SAFEFOAM NF, DE NEEF® GELACRYL SUPERFLEX
Our services:
- Technical expertise supporting our applicators and contractors with method statements, technical solutions and extensive test data to deliver a proven and durable result.
Joints for precast elements
Swellseal and Supercast thermoplastic swelling gaskets offer solutions for sealing joints between precast tunnel segments in addition to the compression seals.
Available in a wide variety of shapes and sizes to fit all tunnel segment designs, Swellseal and Supercast swelling gasket offer solutions for most segment designs.
Swellseal rubber gaskets comply with AFTES requirements.
Our solutions:
- Swelling gaskets: Swellseal3V/8V, Supercast
Our services:
- Experience supported by testing
- Custom shape design
