Description
BETEC® 350 Waterproof Tie-Bar Hole Sealing Compound
BETEC® 350 is a high-performance, single-component, polymer-modified and fibre-reinforced cementitious repair compound specifically developed for permanently sealing tie-bar holes left after the removal of formwork ties. Its rapid-setting, waterproof formulation provides exceptional strength, shrinkage compensation and excellent adhesion to concrete, making it ideal for below-ground waterproofing structures, water-retaining concrete and civil engineering projects.
Requiring only the addition of clean water, BETEC® 350 is easy to mix and apply by hand or trowel. Once cured, it produces a durable waterproof seal capable of resisting hydrostatic water pressure up to 10 bar, making it the ideal solution for sealing formwork tie holes in basements, retaining walls, tunnels and concrete structures.
Key Benefits
- Single-component cementitious repair compound
- Polymer modified for enhanced waterproof performance
- Fibre reinforced for increased strength
- Rapid setting formulation
- Waterproof and resistant to 10 bar hydrostatic pressure
- High bond strength to concrete
- Shrinkage compensated
- Low permeability
- Easy to mix and apply
- Suitable for internal and external use
- Ideal for below-ground waterproofing structures
Applications
- Sealing formwork tie-bar holes
- Basement waterproofing
- Concrete retaining walls
- Water-retaining structures
- Lift pits
- Tunnels
- Concrete repairs
- Civil engineering structures
- Foundations
- Below-ground concrete waterproofing
Technical Information
- Product Type: Polymer-modified waterproof cementitious compound
- Colour: Grey
- Pack Size: 8kg
- Yield: Approximately 4 litres per pack
- Coverage: Approximately 110 tie-bar holes (26mm diameter) per 8kg pack
- Working Time: Approximately 20 minutes at 20°C
- Initial Set: Approximately 30 minutes
- Application Thickness: 5–50mm
- Application Temperature: +5°C to +35°C
- Compressive Strength:
- 1 Hour: 8 N/mm²
- 1 Day: 38 N/mm²
- 7 Days: 50 N/mm²
- 28 Days: 60 N/mm²
- Water Resistance: Up to 10 bar hydrostatic pressure
Frequently Asked Questions
What is BETEC® 350 used for?
BETEC® 350 is specifically designed to permanently seal tie-bar holes left after removing formwork ties in concrete structures.
Is BETEC® 350 waterproof?
Yes. Once cured it forms a waterproof seal capable of resisting hydrostatic water pressure up to 10 bar.
How quickly does BETEC® 350 set?
The product has a working life of approximately 20 minutes and rapidly sets in around 30 minutes at 20°C.
How many tie-bar holes does one pack cover?
One 8kg pack will seal approximately 110 tie-bar holes with a diameter of 26mm.
Can BETEC® 350 be used below ground?
Yes. It is ideal for waterproofing basements, retaining walls, tunnels and other below-ground concrete structures.
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