Vetobond EB431

Clean all surfaces and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits, or algae. Roughen the surfaces, remove any 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 commences.

are should be taken to ensure that Vetobond EB431 is thoroughly mixed. Stire the ‘hardener’ and ‘base’ components separately before mixing to disperse any settlement. Pour the entire content of the ‘hardener’ tin into the ‘base’ tin. Mix the two materials thoroughly using a suitable slow-speed drill and mixing paddle for 2 minutes until achieving a fully uniform color. Scrap the sides of the tin, and continue mixing for a further 1 minute. Slowly add the Reducer part and mix for 3 minutes.

To facilitate mixing and application at temperatures below 22ºC, the separate components should be warmed in hot water up to a maximum temperature of 25ºC 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 20ºC and directly remove it before use.

Apply Vetobond EB431 as soon as the mixing process completes. Brush Vetobond EB43 or spray it on the prepared surfaces.

Apply the new concrete or screed to the coated substrate up to 24 hours after application at 22ºC or up to 12 hours at 30ºC, or between 8 to 10 hours at 35ºC. However, leave the coated substrate for one hour before placing the new concrete or screed.

Where Vetobond EB431 is to be used as part of a repair system to form a substrate/repair barrier, care should be taken to achieve an unbroken coating. Apply one coat and allow to gel. 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 the 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.