Polyurea grouting fluid is a new type of single-component grouting and plugging material, belonging to modified polyurea polymer compounds. It features high solid content and high elasticity as a chemical grouting solution that cures in water and maintains strong adhesion in wet conditions. Using a small high-pressure grouting machine, it cures into a dense rubber elastomer after injection into holes and gaps, creating a tight seal. After curing, it does not foam or shrink, maintaining a tough rubber shape for long-term plugging effects. Being solvent-free, it prevents concrete surface contamination. Projects using this material experience minimal leakage and require no rework. For gaps larger than 2mm, traditional drilling and nailing grouting techniques can be replaced with pressure filling methods, significantly reducing labor costs.
STEP 1: Drill diagonal holes along both sides of the crack, ensuring penetration through the crack
STEP 3: Pour material into grouting machine and begin grouting, filling entire gap from bottom to top
Multiple stretching effects effectively resist surface cracking recurrence.
Demonstrates strong toughness through multiple pull-up tests.
Superior film forming strength with excellent aging resistance, wear resistance, and long service life.
High Solid Content Without Shrinkage
Strong toughness, high elasticity, excellent crack adhesion, and superior adaptability unaffected by thermal expansion and contraction.
Superior Adhesion: Outperforms epoxy resin in adhesion strength.
Enhanced Performance: Superior strength and high pressure resistance compared to polyurethane.
Machine Construction for Deep Plugging
After sealing and fusing with the substrate, the product gradually solidifies and firmly adheres, achieving deep sealing and waterproofing effects.
Self-Healing and Blister Resistance
Automatic repair after puncture without water leakage.
Advanced Technical Features
Solid Content >95%: High solid content enables construction and formation on any irregular structure with curved, inclined, or vertical surfaces.
Self-Flowing Seam Recognition
Polyurea products feature innovative self-flowing permeable crack technology.
Automatic Leakage Detection
Superior permeability allows easy penetration of small molecules into concrete micro-cracks for deep penetration.
Temperature Performance
Excellent weather resistance with high and low temperature tolerance - no deformation at high temperatures, no cracking or hardening at low temperatures.
High Temperature Resistance
Maintains integrity without deformation in 100℃ boiling water.
Low Temperature Performance
Resistant to -25℃ low temperatures without cracking.
Underwater Application
Can be bonded and cured effectively in water environments.
High Resilience Performance
Polyurea material withstands settlement and cracking with strong coating toughness and high adhesive strength (approximately 4MPa concrete bonding).
Superior Adhesion and Flexibility
Strong adhesion and toughness prevent cracking during building settlement and displacement, providing superior joint filling performance and durability.
Maintains gap sealing during wall expansion and contraction from thermal changes.
Impact Protection
Polyurea protection shields construction surfaces from weathering, corrosion, oxidation, UV radiation, and impact damage.
High Pressure Water Gun Test
Glass Critical Strike Test
Application Range
- Civil Engineering: Dam reinforcement, seepage prevention, and water conservancy projects
- Subway Tunnels: Fills gaps be tunnel linings and surrounding rocks to prevent water leakage and ensure safety
- Bridge Repair: Fast curing and high strength for crack repair and load-bearing capacity restoration
- Building Waterproofing: Applied in basements, roofs, and walls for structural protection
- Expansion/Contraction Joints: Adapts to structural movement, preventing water leakage and extending service life
About Lihong Technology
Lihong Technology continues to increase investment in advanced safety and environmental protection facilities. As a second-level enterprise for production safety standardization, many products have passed food-grade certification. The company maintains quality as its core principle, operating advanced quality management and information systems to enhance product quality process control. Leveraging advanced technology and equipment, we actively create world-class product quality and corporate image.
The company leads high-quality development through technological innovation, employing over 30 industry high-end talents across three R&D platforms: Jiangsu Technology R&D Center, Jiangsu Polyurethane New Material Engineering Technology Research Center, and Jiangsu Special Polyurethane New Material Engineering Research Center.
With 5 invention patents, 22 utility model patents, and over 10 pending invention patents, our specific functional flame-retardant polyether polyols research has been designated a key R&D project in Huai'an City.
Frequently Asked Questions
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