Hydrophilic bar/Bentonite Waterstops/swellable waterbar for
PZ rubber water stop is a new type of waterproof material that
shares the same performance with ordinary rubber product and
automatically expands by reacting to water. It’s more solid than
common rubber water stop in terms of water stoppage and waterproof
Features of product type water swelling rubber water stop strip:
1. After touching water, it will produce at least 1-5 times of the
expansion deformation and fill all irregular surfaces of joints
.Holes and gaps produce tremendous contact pressure at the same
time to completely prevent leakage.
2. When the joints or the construction joints displacement cause
the gap to exceed the elastic range of the material , ordinary
rubber sealing material loses the sealing effect, but our product
can achieve water stop by water swelling.
3. As plugging seal water stop material, water swelling rubber can
save dosage and avoid general elastic material’s features of
elastic fatigue due to excessive compression, which makes the
waterproof effect more reliable with good water resistance,
chemical resistance and aging resistance.
4. It is mainly used in shield construction method bricking joint
waterproof, water stop strips used for building deformation joints
and construction joints, and water stop of metal components and
precast, concrete joints.
Physical performance parameters of product type water swelling
rubber water stop strips
|3||Elongation at break/%||450||350|
|4||Volume expansion ratio/ %||150||250||400||600|
|Repeater water immersion test||Thensile strength/MPa||3||2|
|Elonggation at break/%||350||250|
|Volume expansion ratio/%||150||250||300||500|
|6||Cold bending (-20℃×2h)||Crack-free|
Note: 1) Hardness is recommended item
2) Silicone test of finished products achieve 80％ of the standard.
3)The tensile strength targets in joints shall not less than 50％of
The product type water swelling rubber water stop strips are widely
used in waterproof sealing of deformation joints and filling
pipelines of civil building structures, the joints of steel
reinforced concrete by shield construction method, waterproof
sealing pads, the interface material of pipe jacking engineering,
interface seal of open excavation method box culvert underground
pipeline, water conservancy and hydropower engineering, waterway
civil engineering , water-proof packing and so on.
Construction reference matters: before pouring concrete, expansion
rubber should avoid rain and contact with objects with water. For
the reliable contact with the concrete before construction,
construction level should be kept dry and clean, and the surface
should be flattened.
Note: According to design requirements, we can also make slow
swelling type water swelling rubber water stop strips.