YFKJ-5260 Hengshui Yifeng Technology Co., Ltd. I. Product Introduction The water-swelling rubber waterstop is made from high polymer inorganic water-absorbing expansion materials and rubber, and is a new type of building waterproofing material. Upon contact with water, it can absorb water and swell, with a swelling rate of 250% to 550% (adjustable), forming an impermeable plastic colloid that fills the gaps between new and old concrete. In addition to having all the properties of a waterstop, it also features an internal waterproof line made from special rubber designed for water-swelling applications. As a result, when the swelling rubber expands upon contact with water, it enhances the tightness between the waterstop and the structure, improving the waterproofing and water-stopping effects. II. Performance Characteristics The water-swelling rubber waterstop, in addition to possessing the performance of ordinary rubber waterstops, has the main characteristic that its internal waterproof line is made from special rubber designed for water-swelling applications. This enhances the tightness between the waterstop and the structure when the swelling rubber expands upon contact with water, thereby improving the waterproofing and water-stopping effects. The rubber material used in the water-swelling line complies with the GB18173.3-2002 standard, while the remaining rubber parts have the same physical and mechanical properties as ordinary rubber waterstops, complying with the GB18173.2-2000 standard. The physical properties of the rubber material comply with standard GB/T18173.3-2002. The water-swelling rubber waterstop increases the tightness between the waterstop and the structure upon water swelling, thus enhancing the water-stopping and waterproofing performance, effectively solving the long-standing problem of surrounding leakage. This product has been widely used in over 360 key projects nationwide, with good performance. This product is primarily used in cast-in-place concrete at construction joints and deformation joints, integrating with concrete structures in foundational engineering, such as underground facilities, tunnels, aqueducts, water dams, and liquid storage structures. The rubber waterstop sometimes needs to be used in conjunction with two-component polysulfide building waterproof sealing adhesive. Utilizing the high elasticity and compressive deformability of rubber, it produces elastic deformation under various loads, effectively tightening seals to prevent water leakage, seepage, and to provide shock absorption. III. Application Scope The water-swelling rubber waterstop can be used in construction joints of underground concrete structures, effectively and thoroughly solving the water leakage problem at construction joints, serving as a replacement for traditional rubber waterstops. It is widely used in basements, cave storages, mines, bridges, tunnels, subways, sewage treatment plants, water dams, water storage tanks, and various other projects. In addition to having all the properties of rubber waterstops, this product also features an internal waterproof line made from special rubber designed for water-swelling applications. This enhances the tightness between the waterstop and the structure when the swelling rubber expands upon contact with water, improving waterproofing and water-stopping effectiveness. Thus, it effectively addresses the long-standing issue of surrounding leakage. This product has been widely adopted in over 250 key projects nationwide, demonstrating good results.