BOSLAI Polyurea Injection Grout (Polyurea Grouting Materials) is a high-performance polymer injection grout characterized by excellent waterproofing, high elasticity, chemical resistance, high solid content, and non-shrinkage properties. Its sealing performance surpasses that of conventional sealants. Additionally, the product offers high tensile strength and elongation atbreak, enabling it to bridge various structural cracks, pavement cracks, and voids. It effectively addresses leakage and recurrent leakage issues caused by expansion joints, contraction joints, and connection joints.
Single-component / Eco friendly / OEM Accepted / High Elasticity / Chemical Resistant
APPLICATION RANGE
Polyurea Injection Grout can be injected into leaking cracks via a grouting pump, or applied directly by pouring it into the joints.
1.Civil Engineering: Polyurea sealant is used in water conservancy projects such as dam reinforcement and seepage prevention, enhancing safety.
2.Subway Tunnels: In tunnel construction, polyurea grouting fills gaps between tunnel linings and surrounding rocks, preventing water leakage and ensuring safety.
3.Bridge Repair: Polyurea sealant, with its fast curing and high strength, is ideal for repairing bridge cracks and restoring load-bearing capacity.
4.Industrial and Civil Buildings: Polyurea sealant is used for waterproofing in basements, roofs, and walls, protecting the building structure.
5.Expansion joint, Deformation joint, Settlement joint, movement joint.
PACKAGING & COVERAGE
| Specification: | 9kg/pail or 20kg/pail |
| Appearance: | Single component, gray viscous liquid. |
| Shelf Life: | 1 Year |
TECHNICAL DATA
| Item | Data |
| Solid content, % | 98 |
| Surface dry time, h | 3 |
| Full Drying time, h | 7 |
| Tensile strength, MPa | 1.3 |
| Elongation at break, % | 402 |
| Waterproofness | 0.3MPa, 120min, waterproof |
| Heating shrinkage rate, % | -1.9 |
DOWNLOAD TDS
TDS_Polyurea Injection Grout
ADVANTAGES
- Exceptional Durability: esistant to water immersion, acid and alkali, and high temperatures.
- Underwater Curing Capability: Can fully cure in water, tightly bonding with concrete even in humid or submerged conditions.
- Strength and Elasticity Balance: Possesses certain strength and elasticity, reinforcing structures while accommodating deformation.
- Dense Structure and Waterproof Performance: Dense internal structure, outstanding waterproof performance.
- Non-Shrinkage After Curing.
- Excellent Adhesion to Multiple Substrates: Excellent adhesion to concrete, ceramic tile, and metal surfaces.
- Chemical Resistant.
Packaging, MOQ, and Export Shipping
Standard packaging is 9kg or 20kg steel pails. MOQ is 200 kg if you have a freight forwarder in China; otherwise the minimum shipment follows your shipping line’s requirement (around 2 CBM). Trial orders and free samples are welcome — test the polyurea injection grout on your actual structure before committing to bulk.
Lead time is 4 days for standard stock; OEM orders take 7 days depending on packaging design. We ship with CIF, FOB, EXW with complete export documentation — TDS, MSDS, and Non-dangerous goods classification for smooth customs clearance.
Customization Service
Customization is available for packaging design and package sizes.
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FAQ
Q: What is polyurea injection grout used for?
Polyurea injection grout seals structural cracks, expansion joints, and voids in concrete. Typical uses include dam seepage control, subway tunnel lining gaps, bridge crack repair, and basement waterproofing. With 402% elongation, this polyurea grouting material bridges moving cracks where rigid materials fail. It is injected with a grouting machine through packers drilled along the crack.
Q: How does polyurea grout differ from polyurethane grout?
Polyurethane (PU) grout foams and expands on contact with water — best for stopping active leaks fast. Polyurea injection grout does not shrink, offers higher elasticity (402% elongation), and stronger chemical resistance, making it better for dynamic joints, bridge decks, and pavement cracks subject to continuous movement.
Q: Can polyurea injection grout cure underwater?
Yes. BOSLAI polyurea grout fully cures in water and bonds tightly to concrete in humid or submerged conditions. This makes it ideal for tunnel linings, dam repair, and below-grade leaks where drying the substrate is not practical.
Q: What equipment is needed to inject polyurea grout?
Use a grouting machine of at least 2000W — low-power pumps cannot handle its viscosity. Standard procedure: drill holes at 20–50 cm spacing at 45°–70°, install packers, inject from bottom to top, and seal holes after 24 hours. Full guidelines are in the TDS.
Q: Can you OEM polyurea injection grout packaging?
Yes. BOSLAI offers private-label packaging, custom pail sizes (standard 9kg/20kg), custom formulation (solid content, viscosity), and printed branding. We support distributors building their own polyurea grout brands with low-MOQ trial orders.
Q: What is the shelf life and lead time?
Shelf life is 12 months in unopened pails stored at 5–35°C. Lead time is 4 days from order confirmation for standard packaging; allow 7 days for OEM orders. We ship FOB from Tianjin or Shanghai.
Q: Which countries do you export polyurea grout to?
BOSLAI exports polyurea injection grout to distributors in 40+ countries, including the UAE, Saudi Arabia, Vietnam, the Philippines, Malaysia, Nigeria, and Brazil. Every order ships with TDS, MSDS, and Non-DG documentation for smooth customs clearance.
Q: Can polyurea injection grout be used in tropical and cold climates, such as Indonesia and Russia?
Yes. BOSLAI polyurea injection grout performs reliably in both climates. In tropical regions such as Indonesia, high humidity and temperature do not affect curing speed or adhesion strength. In cold regions such as Russia, the cured grout maintains its elasticity and sealing performance at low temperatures.
Q: How do I find a reliable polyurea injection grout manufacturer?
Check five things: (1) a real factory with in-house production, not a trading company; (2) OEM and private-label capability; (3) complete export documentation — TDS, MSDS, COA; (4) free samples offered before bulk orders; (5) proven export experience. BOSLAI is a polyurea injection grout manufacturer in China that meets all five, supplying distributors in 40+ countries at factory-direct FOB pricing.
Why Distributors Stock BOSLAI Polyurea Grout
Polyurea injection grout is a high-margin, low-competition SKU for waterproofing distributors. Demand is driven by infrastructure repair — tunnels, bridges, dams — where only high-elasticity, non-shrink polyurea grouting materials qualify. BOSLAI produces polyurea grout in a 10,000-ton facility with strict batch-to-batch consistency, so distributors avoid quality complaints on repeat orders. As a factory-direct polyurea grout supplier, we offer custom formulation and private-label packaging — you build your brand while we handle production, documentation, and export logistics.
Polyurea Sealant and Chemical Grout for Crack Injection
Also called polyurea sealant, polyurea chemical grout, polyurea crack injection, or PU polyurea grout — polyurea injection grout is a high-performance polymer grouting material with 98% solid content and near-zero shrinkage. Unlike conventional polyurethane grouts, this polyurea grouting material cures underwater, resists chemical corrosion, and maintains flexibility from -40°C to high temperatures. It bonds strongly to concrete, tile, and metal — making it a versatile solution for structural waterproofing, crack repair, and joint sealing.
Ideal for Expansion Joints, Deformation Joints, and Chemical Exposure
Polyurea injection grout is the preferred choice for expansion joints, contraction joints, and deformation joints where structural movement is continuous. With 402% elongation at break and non-shrinkage after curing, it bridges dynamic cracks without losing adhesion. It also excels in aggressive chemical environments — resistant to acid, alkali, and industrial fluids that degrade standard polyurethane grouts. Common applications include chemical plant floors, wastewater treatment tanks, bridge expansion joints, subway tunnel segment joints, and dam movement joints.
Your Polyurea Injection Grout Manufacturer and Exporter in China
As a specialized polyurea injection grout manufacturer, BOSLAI supplies polyurea sealant and polyurea grouting material to distributors and importers worldwide. We offer factory-direct pricing, full OEM customization — private-label packaging, custom formulations, and tailored solid content — plus export support covering MSDS and dangerous goods documentation. Whether you need a reliable polyurea grout supplier for bulk orders or prefer to test with a free sample first, download our TDS or contact us for a quotation.
