Leak-stopping Agent
CSA-Based Rapid-Set Solution for Active Water Ingress Control in Concrete Structures
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Leak-stopping Agent
Service Hotline：+86 15617626826
Consult NowOur Leak Sealing Agent is a high-performance, calcium sulphoaluminate (CSA) cement-based material specifically developed for the rapid sealing of active water ingress in concrete substrates. Formulated for critical waterproofing applications, it reacts immediately upon contact with water, forming a dense, impermeable matrix that effectively blocks water penetration—even under high hydrostatic pressure. Its rapid setting time, exceptional adhesion to wet substrates, and long-term durability make it ideal for both emergency interventions and permanent waterproofing solutions.
Key Technical Advantages
● Instant Setting for Immediate Leak Control
The material sets within 30 seconds to 2 minutes, enabling rapid response to water intrusion in pressurized or continuously leaking environments.
● Hydraulic Expansion for Positive Sealing
The CSA-based formulation undergoes controlled expansion during hydration, ensuring tight mechanical sealing within cracks, joints, and voids, even in the presence of flowing water.
● Excellent Substrate Adhesion
Achieves strong bonding to wet, saturated, and uneven concrete surfaces, providing effective sealing without the need for surface drying or complex preparation.
● Long-Term Durability Under Harsh Conditions
Exhibits outstanding resistance to chemical attack, sulfate exposure, and continuous moisture, making it suitable for use in underground, marine, and wastewater environments.
● Non-Toxic and Environmentally Safe
Free from chlorides, corrosive agents, or harmful additives, the product is safe for use in potable water systems, confined spaces, and ecologically sensitive areas.
Technical Support and Customized Formulations
Leveraging decades of expertise in CSA cement technology, we provide project-specific formulations tailored to environmental conditions, performance targets, and installation methods. Our technical team offers comprehensive support, including mix design optimization, substrate assessment, application training, and on-site assistance. Whether for rapid repair, preventive waterproofing, or integrated structural protection, we deliver reliable sealing solutions with proven field performance.
| Ratio of water to material |
Setting time(min) | Compressive(MPa) | ||||
| Inital | Final | 15min | 1h | 1d | 28d | |
| 0.3-0.4 | 1-3 | 5 | >15 | >25 | >30 | >50 |
Typical Applications
● Active water leak sealing in tunnels, basements, subway systems, and underground infrastructure
● Waterproofing of construction joints, expansion joints, pipe penetrations, and crack interfaces
● Emergency leak control in water tanks, retaining structures, lift shafts, and reservoirs
● Pressure leak sealing in manholes, sewage systems, stormwater chambers, and utility vaults
Application Method
● Before application, cut the leaky area or seam into a bell-shaped or wedge-shaped form, discarding excess material and preparing the necessary tools and measuring devices.
● Place 1kg of the water-stopping compound into the container, followed by 0.3kg of water, and mix thoroughly. In cold temperatures, using warm water is recommended for better mixing.
● Using your hands, knead the viscous mixture into a wet mass. When it becomes warm to the touch (roughly 3-5 minutes), quickly apply it against the flow of the leak, maintaining pressure until the mixture hardens (approximately 2-3 minutes)
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ZHENGZHOU XINMI MOLTEN MATERIAL CO., LTD.
Add：Pingmo Industrial Park, Pingmo Town, Zhengzhou, Henan Province, China
Tel：+86 15617626826
Email：jeffsung@xmmlt.com
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