Water dispersible epoxy bonding agent to bond old to new concrete
Vetobond EB431 is based on water-dispersible epoxy resins containing pigments and fine fillers. It is supplied as a three-component material in pre-weighed quantities, ready for on-site mixing and use. The product is used in external and internal applications on horizontal surfaces or on vertical surfaces where mortar or concrete can be supported by formwork. The long ‘open’ pot life makes it suitable for formwork or where it requires to fit additional steel reinforcement. The product is ideal for roads, bridges, pavements, loading bays, and factories, and bonded or granolithic floor toppings.
ASTM C 881/881M-13 (Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete) as Type I, II, III, IV & V - Grade 2 class B & C
Vetobond EB430 is supplied in 5 Liters Kit.
Yield: 0.25 L/m2
Stated consumption data are for general guidance. Actual consumption depends on the nature of substrate, method of application, and wastages extra.
The original sealed container of Vetobond EB430 has a shelf life of 12 months, provided it is stored clear of ground in a dry, shaded place below 35ºC.
Vetobond EB431 has an overlay time of 24 hours at 22ºC, 12 hours at 30ºC, or 8 to 10 hours at 35ºC, making it more suitable for use where additional steel reinforcement and formwork has to be fitted or where temperatures are high.
Care 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 beginning to mix. 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 before use.
Apply Vetobond EB431 as soon as the mixing process completes. Brush Vetobond EB43 or spray it to 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.
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. The effectiveness of decontamination and the soundness of the substrate should then be assessed by a pull-off test. Any steel reinforcement and formwork should be prepared, cut to size and shape, and made ready for assembly before mixing commences.
Vetobond EB431 should not come in contact with skin or eyes or be swallowed. Ensure adequate ventilation and avoid inhalation of vapors. Some people are sensitive to resins, gardeners, and solvents. Wear suitable protective clothing, gloves, and eye protection. If working in confined areas, use suitable respiratory protective equipment. The use of barrier creams provides additional skin protection. In case of contact with skin, remove immediately with resin-removing cream followed by washing with soap and water.
Do not use solvent. In case of contact with eyes, rinse immediately with plenty of clean water and seek medical advice. If swallowed, seek medical attention immediately – do not induce vomiting.
Vetobond EB431 is non-flammable.
Saveto endeavors to ensure that any advice, recommendations, information it may give is accurate and correct. It cannot accept any liability, either directly or indirectly, arising from the use of its products because it has no direct or continuous control over where or how its products are applied, whether or not following any advice, specification, recommendation, or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification.
Hard copies of TDSs are printed once or twice a year. Our technical data sheets are continuously updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs.
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