Premium Rapid Setting Waterplug Mortar | High-Strength Hydraulic Cement for Active Leak Sealing
Product Overview
Our Rapid Setting Waterplug Mortar is a specialized, high-performance hydraulic cementitious material designed for instant plugging of active water leaks, seepage, and gushing water in concrete and masonry structures. Formulated with advanced expanding agents and fast-setting compounds, this mortar expands upon curing to form an impermeable, high-strength seal that stops water flow within seconds, even under negative pressure.
Available in Type I and Type II formulations with standard and winter-specific variants, this product ensures superior structural reliability in both ambient and low-temperature construction environments.
🔧 Key Technical Specifications (Based on GB/T 23440 Standard)
| Property | Test Condition | Type I (Standard) | Type II (High-Performance) |
|---|---|---|---|
| Flowability | Initial (mm) | 130 ~ 170 | 130 ~ 170 |
| Compressive Strength | 1 Day (MPa) | ≥ 30 | ≥ 20 |
| 3 Days (MPa) | ≥ 45 | ≥ 30 | |
| 28 Days (MPa) | ≥ 65 | ≥ 45 | |
| Flexural Strength | 28 Days (MPa) | ≥ 7 | ≥ 5 |
| Vertical Expansion Rate | 3h (%) | ≥ 0.02 | ≥ 0.02 |
| 24h vs 3h Difference (%) | 0.02 ~ 0.30 | 0.02 ~ 0.30 | |
| Chloride Ion Content | – | ≤ 0.03% | ≤ 0.03% |
| Water Permeability | – | 0 (Impermeable) | 0 (Impermeable) |
❄️ Winter-Specific Variants (Low-Temperature Performance)
Our product range includes specialized Winter-Type formulas engineered to maintain rapid setting and strength development in cold climates. As per the test notes, these variants are capable of achieving specified structural strengths even after curing at -5°C for 3 days, ensuring year-round reliability for emergency repairs.
🌟 Key Product Benefits
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Immediate Water Stop: Reacts instantly to plug active leaks, ensuring a dry working surface almost immediately.
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High Early Strength: Achieves up to 30 MPa (Type I) compressive strength within just 24 hours, allowing for rapid backfilling and reduced downtime.
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Non-Shrink & Expansive: Cures with positive expansion (0.02% – 0.30% difference), ensuring a tight, wedge-like seal that locks into cracks and voids.
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Chloride-Restricted: Low chloride content (≤0.03%) ensures no risk of steel reinforcement corrosion, preserving the integrity of your rebar.
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Zero Permeability: Absolute impermeability (0%) guarantees long-lasting waterproofing protection.
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Versatile Options: Choose between Type I (higher strength) or Type II (cost-effective), and ambient or winter-grade formulations to suit your specific job site conditions.
🏗️ Common Applications
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Emergency Water Leak Repair: Plugging active water gushing from concrete walls, floors, and basements.
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Sewage & Pipe Penetration Sealing: Stopping leaks around pipe penetrations and pipe joints.
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Tunnel & Underground Construction: Sealing fissures and joints in subway stations, mines, and retaining walls.
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Dam & Reservoir Maintenance: Repairing leaking cracks in concrete hydraulic structures.
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Civil Engineering Anchoring: Rapid anchoring of bolts and iron parts in construction projects.
✅ Quality Assurance
Every batch is rigorously tested to meet and exceed the strict parameters outlined in the table above. With 0% water permeability and rigorous low-temperature curing validation (-3d / -7d+21d), our Rapid Setting Waterplug Mortar is built for the most demanding engineering standards.
📦 Packaging & Availability
Available in standard 20kg bags or customized packaging based on project requirements. Contact us for bulk pricing and shipping estimates.
❓ FAQ (Frequently Asked Questions)
Q1: What is the difference between Type I and Type II Rapid Setting Waterplug Mortar?
A: Type I is the higher-strength variant, offering ≥65 MPa compressive strength at 28 days and ≥7 MPa flexural strength, making it ideal for heavy-duty structural repair. Type II is a standard, cost-effective grade with ≥45 MPa compressive strength at 28 days, suitable for general leak sealing and non-critical structural applications.
Q2: Can this product be used in freezing weather?
A: Yes. We offer a Winter-Specific (Low-Temperature) variant. According to our technical notes, this formula can achieve strength development even when cured at -5°C for the first 3 days. It is rigorously tested under cold conditions to ensure it sets and seals effectively where standard cements fail.
Q3: How do I mix and apply this mortar for active leaks?
A:
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Clean the leak area, removing loose debris and widening the crack slightly.
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Mix the dry powder with the recommended amount of clean water to form a stiff, putty-like paste.
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Quickly knead the mortar into a conical plug and firmly force it into the water-gushing hole.
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Hold pressure firmly for 1–2 minutes until the heat of hydration causes it to set and stop the water flow completely.
Q4: Why is the vertical expansion rate important?
A: The expansion rate (0.02% to 0.30% difference after 24 hours) is critical for waterproofing. The product expands slightly as it cures, creating a mechanical interlock against the internal walls of the crack or hole. This expansion compensates for drying shrinkage and ensures a permanently tight, leak-proof seal.
Q5: Is this mortar safe for reinforced concrete structures?
A: Absolutely. Our mortar has a maximum Chloride Ion Content of ≤0.03%, which is well below the threshold that causes corrosion. It will not degrade your steel reinforcement bars, ensuring long-term safety for your concrete structures.
Q6: What is the pot life (working time) after mixing?
A: Because this is a rapid-setting material, the working time is extremely short—typically 1 to 3 minutes after water is added. We recommend mixing only small, manageable batches that can be applied immediately. If the mortar starts to harden in the bucket, do not add more water; discard it and mix a fresh batch.
