Services
Fourteen ways we stop water and strengthen ground, each carried out by our own engineers and crews with grouts made at our own plant. Choose by method below, or start from the problem.
Water
Stopping water
Tunnel water ingress control
Leaks and inflow stopped in tunnels, shafts and underground structures.
Crack and joint injection
Leaking cracks and joints sealed, and structural cracks bonded, in concrete and masonry.
Waterproofing and polyurea linings
PU membranes and polyurea linings for decks, tanks, tunnels and water structures.
Tunnels
Tunnels and shafts
Pre- and post-excavation grouting
Water cut off and weak ground consolidated ahead of the face; voids closed behind it.
Cavity and void filling
Voids above tunnel crowns, behind linings and under slabs filled without loading the support.
Tunnel rehabilitation
Old and operating tunnels: seepage stopped, ground consolidated and lining repaired, under traffic.
Ground
Strengthening and proving the ground
Track and slab re-levelling
Settled ballastless track and slabs lifted back to level by PU injection, on live lines.
Permeation and chemical grouting
Weak, loose or wet ground strengthened and sealed by resins and gels that fill it without moving it.
TAM grouting
Staged grouting through sleeve pipes for shafts, foundations and deep excavations.
Curtain and consolidation grouting
Seepage cut-offs and foundation consolidation for dams, barrages, shafts and structures.
Ground investigation and monitoring
ERT, GPR and MASW surveys, boreholes, lab tests and instruments, before and after treatment.
Rock, slopes and mines
Rock, slopes and mines
Rock bolting and self-drilling anchors
Rock bolts, self-drilling and prestressed anchors for tunnels, portals, slopes and caverns.
Slope stabilisation
Soil nails, anchors, mesh, drainage and rockfall barriers for slopes above roads, railways and towns.
Mine shaft and strata treatment
Water sealed in shafts and declines; weak roof and face strata consolidated with resins and bolts.
Start from the problem
How the treatment is chosen
The ground and the water decide the technique. This is the translation we use between what you see on site and what we inject.
| On site | Technique | What we use | More |
|---|---|---|---|
| Water coming into a tunnel, shaft or excavation | Chemical grouting with water-reactive PU | DrucHyd 2C, PuTeRA | Tunnel water ingress control |
| A gush of water during excavation or development | Rapid-set foam, then a sealing resin | PuTeRA 2430 VG, DrucHyd 2C | Mine shaft and strata treatment |
| A void above a tunnel crown | High-foaming PU through pipes or SDAs | PuTeRA foams, DrucHyd 2C | Cavity and void filling |
| Weak ground ahead of a tunnel face | Canopy and face grouting | PuTeRA 2601 G, DrucPietra | Pre- and post-excavation grouting |
| Water arriving from a river, reservoir or the sea | Curtain grouting | DrucHyd 2C, DrucPietra, GeoFine | Curtain and consolidation grouting |
| A structure settling or cracking | Consolidation grouting | DrucStone, PuTeRA | Permeation and chemical grouting |
| Settled slab or ballastless track | PU slab jacking and formation grouting | PuTeRA Level Up, PuTeRA 2405 SJ | Track and slab re-levelling |
| Silty, fine-grained ground to be sealed | Permeation with acrylate gel | Teracryl 2420, Acrylic DH509RAcR | Permeation and chemical grouting |
| A leaking crack or joint in concrete | Crack injection | PuTeRA 2410, Teracryl | Crack and joint injection |
| A structural crack to be bonded | Epoxy injection | Geo-EP 2422 | Crack and joint injection |
| Fissured rock needing a cementitious grout | Microfine cement injection | GeoFine | Curtain and consolidation grouting |
| A shielded TBM drive | Tail-skin sealing | TeraSeal | TeraSeal |
| A roof, deck, tank or tunnel to waterproof | Membrane or polyurea lining | GeoShield, Stroxi, Geothane | Waterproofing and polyurea linings |
A ground or water problem on your site?
Send us what you see and where. An engineer reviews it and replies with the next step.