Vetobond EB431

Clean all surfaces and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits, or algae. Roughen the surfaces and remove laitance and expose aggregate by light scabbling or grit-blasting. Oil and grease deposits should be removed by steam cleaning, detergent scrubbing, or the use of a proprietary degreaser. A pull-off test should then assess the effectiveness of decontamination and the soundness of the substrate.

Any steel reinforcement and formwork should be prepared, cut to size and shape, and made ready for assembly before mixing the product.

Ensure that Vetobond EB431 is thoroughly mixed. Stir the ‘hardener’ and ‘base’ separately before mixing them together to disperse any settling material. Pour the entire content of the ‘hardener’ tin into the ‘base’ tin. Mix them thoroughly using a slow-speed drill and a mixing paddle for 2 minutes (until a fully uniform color is achieved).

Scrape the sides of the tin, and continue mixing for another minute. Slowly add the Reducer part and mix for 3 more minutes.

To facilitate mixing and application at temperatures below 22°C, the separate components should be warmed in hot water (up to 25°C maximum) before mixing. If heated to 25ºC, the subsequently mixed material will need to be used more speedily as the pot-life will be reduced to 4 hours. Alternatively, store the material in an environment heated to 20°C and remove it from stock immediately before use.

Apply Vetobond EB431 as soon as the mixing process is completed. You can either brush Vetobond EB43 or spray it on prepared surfaces. Apply new concrete or screed to the coated substrate up to 24 hours after applying Vetobond EB431 (at 22°C or up to 12 hours at 30°C, or between 8 to 10 hours at 35°C). However, you should leave the coated substrate for one hour before placing the new concrete or screed.

Where Vetobond EB431 is used as part of a repair system to form a substrate/repair barrier, you should aim to achieve an unbroken coating. Apply one coat and allow it to gel. Then, apply a second coat and use it as the bonding coat. In some situations (e.g., sprayed concrete repairs), it may be advantageous to scatter dust-free sharp sand over this coat and leave it to harden.

As soon as Vetobond EB431 has been applied, any required steel reinforcement and/or formwork should be elected and fixed securely in place

Remove Vetobond EB431 from tools, equipment, and mixers with water if the 3 components were mixed. The use of Vetonit Solvent XX400 may be needed. Hardened material can only be removed mechanically.