Tretoshield 1K-3

Tretoshield 1K-3 is a single-component polymer-based concrete repair mix.

Summary of benefits

• Single-component (just add water), easy to use.
• Low shrinkage / excellent density: ensures durability even in aggressive environments.
• Thixotropic composition.
• Coefficient of thermal expansion matches that of old concrete.

The repair mix is intended for use in the concrete repair work of:

• façades,
• harbour buildings,
• concrete structures in direct contact with drinking water.

Packaging

• The repair mix is packaged in a 25 kg paper bag.

Properties

• Density: 1,900 kg/m³
• Compressive strength: (BS4551:1980, 15):
  1 d         15.0 N/mm²
  7 d         30.0 N/mm²
  28 d      50.0 N/mm²
• Flexural strength: (BS4551:1980,15):
  7 d        4.0 N/mm²
  28 d      6.5 N/mm²
• Bond strength (BS1881: PT121): > 2.0 N/mm²
• Coefficient of thermal expansion: 13.6 x 10^-6
• Penetration of water (ISO/DIN 7031): 7.53 x 10^-15 m/s
• Free slumping: 0.001%
• Diffusion of chloride ions:
  +20 °C = 9.20 x 10^-14 m²s^-1
  +40 °C = 3.68 x 10^-13 m²s^-1
• Pot life (+20 °C): 30 min (temperature-dependent)