Shotcrete solutions
NATM tunnel construction can face challenges with soil stability or large water leaks during excavation disrupting the application of the shotcrete liners. Injections can be used to solve these challenges. Discover GCP’s soil injection, water control and leak sealing solutions.

Water control and soil consolidation injections
DE NEEF® expertise in underground injections
Chemical grouts offer benefits in time saving, effectiveness when facing high water flows or in case soil conditions will not allow penetration of classic mineral technologies. DE NEEF® offers more than 45 years experience in manufacturing high grade chemical grouts for waterproofing, water blocking and consolidation of underground constructions and tunnels.
- Stabilisation, consolidation and void filling
- Pre and post grouting
- Umbrella injections
- Combi-Grouting
- Water control
- Rock bolting
Our admixture solutions:
- DE NEEF® 1C PU
- TYTRO® 2C PU
- DE NEEF® Gelacryl
Our services:
- Technical support and Special techniques such as DE NEEF® Combi-Grouting and DE NEEF® Combiblock