Specialty Grouting

  • Hydrophilic Polyurethane Grout - Water-Reactive Injection Resin for Gushing Leaks

Hydrophilic Polyurethane Grout - Water-Reactive Injection Resin for Gushing Leaks

Water-triggered polyurethane resin that self-emulsifies into elastic gel, sealing active leaks with CO₂-driven expansion pressure.


 3Minute Water Stop -Gel time ≤180s with 10x water.
 CO₂-Powered Expansion - 350% foaming rate forces resin into voids.
 Flow Through Resistance - Won't wash out under 15L/min flow.
 One Part Simplicity - No mixing; activates on water contact.
 Structural Flexibility - 30% elastic recovery after movement.

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Product Introduction


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Product Parameters

PropertyRequirement (Type I) Test Value
  Density (g/cm³)≥1.001.05
  Viscosity (mPa·s)≤1000820
  Gel Time (10x water, s)≤180150
Non-Volatile Content (%)≥7882
Water Absorption≥20x22x
Key Performance
Foaming Rate (%)≥350380
Water Expansion (%)≥3035
Curing Profile
▶ Initial Set-45 seconds
▶ Full Cure-3 minutes
CO₂ Expansion Pressure-0.8 MPa

Certified Performance

  • JC/T 2041-2020 Type I (Highest grade)

  • EN 12794:2005 Structural Waterproofing


Product Usage

Project Case Studies:

Three Zhanghewan Dam Seepage Control Project
When 20L/min leaks threatened dam stability:

  • 00:00 - Resin injected at 3MPa pressure

  • 00:45 - CO₂ expansion initiated → 350% volume increase

  • 03:00 - Elastic gel formed → leakage reduced by 98%

  • 24h - Full cure achieved (0.9MPa adhesion to wet concrete)


Construction Guide

For Success

    • Drill at 45° angle toward water source

    • Maintain ≥15MPa injection pressure

    • Space ports at 20-30cm intervals

Avoid Failures

    • Never inject against water flow

    • Don't exceed 40°C substrate temperature

Industry-Specific Solutions

ScenarioTechnique Performance Data 
  Tunnel GushingUpstage groutingStops 25L/min flow
  Basement JointsCurtain injectionSeals 5mm cracks
  Pipe PenetrationsAnnular space filling0.6MPa adhesion


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Our products have undergone rigorous testing at our national testing laboratory (CABR testing center co., ltd). Renowned Fortune Global 500 firms such as China Railway Group Limited, China Communications Construction Company Limited, and Sinohydro are among our esteemed clients.


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+86 153 7387 2353 Manager Guo

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