Newton Hydrotank 315 Waterbar

Hydrophilic Construction Joint Waterbar – HydroTank 315

HydroTank 315 Waterbar is a high-grade, hydrophilic waterbar designed to provide superior joint sealing in cast-in-place concrete and precast construction joints. Manufactured from a polymer that swells upon contact with moisture, it effectively prevents water ingress, making it ideal for water-retaining and earth-retained structures.

Utilizing hydrophilic acrylate polymers embedded within a durable butylene carrier material, HydroTank 315 maintains exceptional elasticity and tensile strength, even when fully expanded within the joint. It is highly resistant to acids, alkalis, and organic solutions, making it suitable for sewage treatment plants, biogas facilities, and waste holding tanks.

Unlike conventional waterbars, HydroTank 315 swells up to 9 times its original size, ensuring a complete and reliable seal even in non-compressed joints.

Key Benefits:

✅ Resistant to permanent water pressure up to 2 bar
✅ Delayed swelling – Prevents premature expansion during installation and concrete curing
✅ Swells up to 9 times its original size for maximum sealing efficiency
✅ Highly resistant to the alkalinity of concrete
✅ Maintains elasticity & tensile strength even when fully swollen
✅ Age-resistant – No embrittlement over time
✅ Resistant to sewage, chlorine & sulphur – Ideal for aggressive environments
✅ Retains integrity through multiple wet/dry cycles

Typical Applications:

5/10mm Profile – Sealing construction joints in:
✔ Concrete & steel-intensive structures
✔ Sewage & wastewater tanks
✔ Reservoirs
✔ Biogas plants
✔ Underpinning

2mm Profile – Sealing construction joints in:
✔ Pipes & sleeves
✔ Preformed sump chambers
✔ Steel columns
✔ Manholes

Suitable Substrates:

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

Product Specifications:

• Code 315-10: 10mm x 20mm x 10m coil
• Code 315-5: 20mm x 5mm x 20m coil
• Code 315-2: 20mm x 2mm x 20m coil
• Colour: White

Technical Performance:

• Initial Swelling Delay: 7 days*
• Full Swell Achieved: 28 days
• Increase in Mass (Neutral Water – 7 pH): 900%
• Increase in Mass (High Alkaline Water – 12.5 pH): 350%
• Increase in Mass (Aggressive Water – DIN 4030): 330%
• Maximum Swelling Pressure (Confined in Joint): 2.8 N/mm²
• Water Resistance (Tested): 5.0 bar
• Working Water Resistance (Safety Factor of 2.5): 2.0 bar
• Reaction to Fire Classification: B2 Euroclass

* HydroTank 315 Waterbar is designed for controlled swelling. Swelling begins within 24-72 hours of water contact, with full expansion occurring after 28 days. For optimal performance, installation should be completed just before concrete placement.

💪 Achieve superior joint sealing with HydroTank 315 – Order today!

Downloads

• Download HydroTank 315 Waterbar TDS

• Download HydroTank 315 Waterbar Safety Data Sheet

• Download NBS Clause