HydroTank 315 Waterbar is a hydrophilic, acrylate polymer waterbar, which swells when activated by moisture. it is characterised by high elasticity and high tensile strength. HydroTank 315 Waterbar can be used to seal the structure against water leaks to cast-in-place concrete construction joints. 

The swelling is achieved through hydrophilic acrylate polymers, which are inseparably embedded within the butylene carrier material. This results in high elasticity and exceptional tensile strength, even when fully expanded within the joint. Due to its high resistance to acids, alkalis and organic solutions, HydroTank 315 Waterbar can be used to seal joints where aggressive water is expected such as within sewage treatment plants, bio-gas plants and liquid waste holding tanks. 

Key Benefits

  • BDA Agrément for proven performance
  • Resistant to permanent water pressure of 2 bar.
  • Delayed swelling - will not swell during the installation process or during the concrete cure.
  • Swells up to 9 times its original size.
  • Very resistant to the high alkalinity of concrete.
  • Maintains very high elasticity and tensile strength, even when swollen.
  • Age resistant, no embrittlement.
  • Resistant to sewage, chlorine and sulphur.
  • Retains integrity, even through many wet/dry cycles.

Typical Applications - 5/10mm Profile

Sealing construction joints against water leaks to:

  • Concrete and steel intensive structures
  • Sewage and waste water tanks
  • Reservoirs
  • Biogas plants
  • Underpinning

Typical Applications - 2mm Profile

Sealing construction joints against water leaks to:

  • Pipes and sleeves
  • Preformed sump chambers
  • Steel columns
  • Manholes

Suitable Substrates

  • Concrete
  • Steel
  • Brick or concrete block
  • Ceramic
  • Plastic