Water, ports and highways
City and coastal infrastructure is built in wet ground, close to other structures, with little room to work. We seal and strengthen the ground around shafts and micro tunnels, repair leaking pipelines and manholes from inside, and stabilise slopes and walls beside roads.
Including a seawater inrush cut by up to 85 per cent in a micro-tunnel pit 60 m from the sea at Pipavav.
In a city or on the coast, there is rarely room to dig the problem out. It has to be fixed in place.
TAM grouting, resin injection and anchors let us treat the ground from a few holes, next to structures that must not move.
Industry challenges
Where infrastructure owners need us
Shafts and deep excavations
Water and loose ground coming into shafts and excavations in water-bearing soil.
Seawater and tidal groundwater
Ground under the sea’s water head, where sealing attempts fail against the pressure.
Leaking pipelines and manholes
Joints, cracks and chambers letting groundwater in or sewage out.
Slopes and walls beside roads
Cuttings and retaining walls that move, crack or shed rock onto the road.
- 1Note 1: Borehole with a sleeve pipe, the tube-à-manchette.
- 2Note 2: Sheath grout seals the annulus between the pipe and the ground.
- 3Note 3: Rubber sleeves at fixed intervals: each one is an injection port.
- 4Note 4: A double packer isolates one sleeve at a time.
- 5Note 5: Grout enters the ground at that level only.
- 6Note 6: Stages are repeated, and re-grouted where the take shows a need, until the block is closed.
- 7Note 7: Pressure and volume logged for every stage.
Our solutions
What we do in water, ports and highways
TAM grouting
Staged grouting through sleeve pipes for shafts, foundations and deep excavations.
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.
Slope stabilisation
Soil nails, anchors, mesh, drainage and rockfall barriers for slopes above roads, railways and towns.
Permeation and chemical grouting
Weak, loose or wet ground strengthened and sealed by resins and gels that fill it without moving it.
Our clients and success stories
Water, ports and highways work on record
Micro-tunnel pit, Pipavav
Seawater pouring into a micro-tunnel pit through a crack, after repeated attempts to seal it had failed. Sealed up to 85 per cent by grouting.
Delhi Metro CC-04, Azadpur
Two tunnel boring machines held 30 m down in loose, saturated sand. We sealed and consolidated the ground so they could be retrieved.
Balia Nala landslide, Nainital
A failing slope over 300 m long and 240 m high, crossed by faults, above the town’s lake outlet. Anchored, grouted and protected.
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