Instant Water Leak Repair with Cement Powder

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Plugging a Leak with Rapid-Hardening Cement

In the video, a seller demonstrates the performance of a specialized construction material called Type III Inorganic Rigid Water-Stop Powder.

The demonstration shows a concrete water tank with a hole in its wall, through which water is actively leaking. The demonstrator takes a handful of the dry powder from a bucket and swiftly presses it over the leaking hole. After holding it in place for a few seconds, the water flow is completely stopped.

The core component of this material is a type of special cement known as Calcium Sulfoaluminate Cement. This cement is engineered for extremely rapid hardening. When the dry powder comes into contact with water, it undergoes a fast chemical reaction, expanding and solidifying within seconds to form a rigid, watertight plug. This explains the "dry-powder rubbing" technique shown in the video.

Furthermore, the product contains additives to enhance its performance:

Tensile fibers are added to prevent the hardened material from cracking.

Crystalline additives are included. These chemicals can slowly penetrate the concrete pores around the repair area, creating a long-term seal and improving adhesion.

In summary, this is a professional-grade, fast-setting cementitious material used for emergency leak-stopping and repair in construction and waterproofing applications.