Water swelling water stop strip is a unique new rubber product, is a water swelling performance of putty type water stop strip and product type water stop strip. this kind of rubber produces 2-3 times of expansion deformation after meeting with water, and fills all irregular surfaces, holes and gaps of joints, at the same time produces huge contact pressure, and completely prevents leakage.

Product introduction

in case of water expansion water stop (water swelling strip), it is referred to as the putty type water stop strip and the product type water stop strip by water expansion.

Water swelling rubber is a unique new rubber product. It has both the performance of general rubber products, and the performance of self-expansion in water, is a new type of waterproof material, water stop, waterproof effect is more reliable than general rubber. Performance advantages

Water expandable rubber has more excellent characteristics and advantageS than ordinary rubber.this kind of rubber produces 2-3 times of expansion deformation after meeting with water, and fills all irregular surfaces, holes and gaps of joints, at the same time produces huge contact pressure, and completely prevents leakage. When the joint or construction joint displacement, resulting in clearance beyond the elastic range of the material, the ordinary rubber sealing material loses the sealing effect. the material can also be expanded to stop water. the use of water swelling rubber as plugging and sealing material, not only saves the amount, but also can eliminate the characteristics of elastic fatigue caused by excessive compression of general elastic materials, so that the waterproof effect is more reliable. Quality standard

A. the surface of water-expanded rubber should be clean and smooth, without scratches, bubbles and other impurities, and with neat edges.

B. Tensile strength (Mpa)≥3.5

C. Elongation at break (%)≥450

C. Hardness (Shore A)(degree)42±7

F. Static water expansion rate %≥250

Water expansion putty type, product type rubber strip

Water swelling rubber putty not only has good general putty easy adhesion and durable consumer goods low temperature performance, but also has good expansion characteristics. the product is synthesized by a variety of polymer chemical materials, the strength is higher than the general putty, especially suitable for waterproof engineering. the product can be produced according to the specifications and models of users and design requirements, the finished products are generally wound into a disk and packed in cartons, convenient transportation. Generic names

PN water swelling sealing strip, BW water swelling sealing strip, water sealing rubber strip, water swelling rubber strip

Putty type water expansion sealing strip, also known as PN putty type water expansion rubber sealing strip. It is a strip sealing material with water expansion characteristics, which is made of more than ten kinds of materials through close training, mixing and extruding.

Putty type water expansion sealing strip with high expansion rate, mobile added strong, placed in the construction joint has a strong balance of self-healing function, self-sealing due to settlement and the emergence of new micro-cracks, for the completed project, such as the gap infiltration water leakage, the water stop can be used to re plugging. the cost of using the water stop strip is low and the construction process is simple, and the corrosion resistance is the best. Widely used in civil air defense, swimming pool, sewage treatment engineering, underground railway, tunnel, culvert and other concrete construction joints, expansion joints, cracks.

the characteristics of

1, soaking expansion, "water stop water ";

2, the expansion speed is slow, the expansion rate of 186h immersion is less than or equal to 50% of the maximum expansion rate;

3. Convenient construction and low price

4, non-toxic and pollution-free

5, there is no dissolution under the action of long immersion;

6. Compared with other hydrophilic expansion water stop belts, the biggest difference is that its hydrophilic expansibility has not been lost after repeated expansion for a long time.

the construction technology

(1) for the reserved paste mode, in the cast-in-place concrete to be reserved on the water stop slot (can be reserved in the template nail wood).

the removal of cast-in-place concrete formwork, remove the surface, so that the joint surface without water, clean, no debris.

the water stop strip is embedded in the reserved slot. If the slot is not reserved, the vertical seam can be added with adhesive paste, or with cement nails and wooden bars fixed water stop; the horizontal joints can be directly pasted on the concrete surface.

(4) Concrete should be poured as soon as possible after the water stop strip is pasted.

(5) in the installation and paste process, the water stop strip should be prevented from being polluted and affected by water, so as not to affect the use effect.