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Water

Tunnel water ingress controlLeaks and inflow stopped in tunnels, shafts and underground structures.Crack and joint injectionLeaking cracks and joints sealed, and structural cracks bonded, in concrete and masonry.Waterproofing and polyurea liningsPU membranes and polyurea linings for decks, tanks, tunnels and water structures.

Tunnels

Pre- and post-excavation groutingWater cut off and weak ground consolidated ahead of the face; voids closed behind it.Cavity and void fillingVoids above tunnel crowns, behind linings and under slabs filled without loading the support.Tunnel rehabilitationOld and operating tunnels: seepage stopped, ground consolidated and lining repaired, under traffic.

Ground

Track and slab re-levellingSettled ballastless track and slabs lifted back to level by PU injection, on live lines.Permeation and chemical groutingWeak, loose or wet ground strengthened and sealed by resins and gels that fill it without moving it.TAM groutingStaged grouting through sleeve pipes for shafts, foundations and deep excavations.Curtain and consolidation groutingSeepage cut-offs and foundation consolidation for dams, barrages, shafts and structures.Ground investigation and monitoringERT, GPR and MASW surveys, boreholes, lab tests and instruments, before and after treatment.

Rock, slopes and mines

Rock bolting and self-drilling anchorsRock bolts, self-drilling and prestressed anchors for tunnels, portals, slopes and caverns.Slope stabilisationSoil nails, anchors, mesh, drainage and rockfall barriers for slopes above roads, railways and towns.Mine shaft and strata treatmentWater sealed in shafts and declines; weak roof and face strata consolidated with resins and bolts.
All services →Grouts and resins we make →

Railways

RailwaysSettled track, transition zones and wet tunnels on running lines.

Tunnels and metro

Tunnels and metroWater, cavities and weak ground in tunnels, shafts and metro works.

Hydropower and dams

Hydropower and damsSeepage, foundations, tunnels and slopes on hydro projects.

Mining

MiningWater in shafts and declines, and weak strata at faces and in roadways.

Water, ports and highways

Water, ports and highwaysWater tunnels and shafts, micro tunnels, pipelines, manholes and highway slopes.

Heritage and buildings

Heritage and buildingsSettlement, cracks and leaks in heritage structures and buildings in use.
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Services

Tunnel water ingress controlPre- and post-excavation groutingCavity and void fillingTunnel rehabilitationTrack and slab re-levellingPermeation and chemical groutingTAM groutingCurtain and consolidation groutingRock bolting and self-drilling anchorsSlope stabilisationCrack and joint injectionWaterproofing and polyurea liningsMine shaft and strata treatmentGround investigation and monitoring

Industries

RailwaysTunnels and metroHydropower and damsMiningWater, ports and highwaysHeritage and buildings

Sales

+91 99100 18144WhatsApp +91 99100 18144connect@geoconstech.com

Water

Waterproofing and polyurea linings

A seamless membrane keeps water out where the joints in sheet systems let it in. We apply polyurethane membranes and polyurea linings from our GeoShield range over a prepared, primed surface, and finish them for sun, wear or chemicals where they need it.

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When to call us

The signs

  • Roofs, terraces and decks.
  • Water tanks and reservoirs.
  • Tunnels, basements and underground structures.
  • Surfaces that need protection from abrasion or chemicals.
Waterproofing and polyurea build-upExploded view of a waterproofing system on concrete: prepared substrate, primer, a seamless polyurethane or polyurea membrane, and a topcoat where the surface sees sun, wear or chemicals. Substrate, preparedPrimer · StroxiMembrane · GeoShieldTopcoat · GeothaneTHICKNESS123456
  1. Concrete or steel prepared: cleaned, profiled, and tested for moisture and pull-off strength.
  2. Primer (Stroxi) seals the surface and gives the membrane its bond.
  3. Membrane (GeoShield polyurethane or polyurea), spray or hand applied, without seams.
  4. Topcoat (Geothane) where the surface sees sun, wear or chemicals.
  5. Joints, corners and penetrations are detailed first.
  6. Thickness and adhesion checked as the work proceeds.
Geo Constech
Waterproofing build-up · Exploded view
Schematic · Not to scale

How we do it

Method, step by step

  1. Prepare

    Surface cleaned and profiled; moisture and pull-off strength tested.

  2. Detail

    Joints, cracks, corners and penetrations treated first.

  3. Prime

    Stroxi primer seals the surface and bonds the membrane.

  4. Apply

    Membrane or lining sprayed or applied by hand, without seams.

  5. Topcoat

    Geothane topcoat where the surface sees sun, wear or chemicals.

  6. Check

    Thickness and adhesion checked as the work proceeds.

What we use

Made at our plant in Alwar

Polyurethane membranes and polyurea

GeoShield

Waterproofing and protective linings.

Epoxy primers and underlays; topcoats

Stroxi and Geothane

Primers under membranes; topcoats for sun, wear and chemicals.

Quality

Checks and proof

  • Moisture and pull-off tests before priming.
  • Wet and dry film thickness checked.
  • Adhesion tested on the finished system.

On record

References

References for this service are available on request.

Questions

What clients ask

Pure or hybrid polyurea?

Pure polyurea gives the highest chemical and abrasion resistance. Hybrid polyurea costs less and suits many roofs, decks and general waterproofing. We recommend one after seeing the surface and what it is exposed to.

Can polyurea be used inside drinking water tanks?

Only a system tested and certified for contact with drinking water. Ask us for the current test status of the polyurea proposed before you specify it for a drinking water tank.

Will the membrane bond to damp concrete?

Bond depends on the surface. We test moisture and pull-off strength first, and choose the primer for what we find.

Related services

Often used together

Crack and joint injection

Leaking cracks and joints sealed, and structural cracks bonded, in concrete and masonry.

Tunnel rehabilitation

Old and operating tunnels: seepage stopped, ground consolidated and lining repaired, under traffic.

Seeing this on your site?

Send us what you see, where, and the access or traffic window. An engineer reviews it and replies with the next step.

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