Fosroc Nitobond EP – High-Performance Epoxy Bonding Agent

Fosroc Nitobond EP is a two-component, solvent-free epoxy resin bonding agent supplied in pre-weighed quantities for easy on-site mixing. The base is white and the hardener is green, ensuring visual confirmation of proper mixing. Special cold-weather variants (Nitobond EPFS) are available on request.

Uses:
For bonding fresh wet cementitious materials to existing cementitious surfaces. For use on horizontal surfaces or on
vertical surfaces where mortar or concrete can be supported by formwork. The long ‘open’ life makes it suitable for use
with formwork or where additional steel reinforcement has to be fitted. The product is ideal for roads, bridges, pavements,
loading bays and factories, and for bonded or granolithic floor toppings. Nitobond EP is equally suited to internal and external applications.

Advantages:
Fosroc Nitobond EPmay also be used as part of a repair system where a substrate/repair barrier is required or were the
substrate is likely to remain permanently damp or wet.

•  Can be applied on to dry or damp substrates
• Exhibits high mechanical strength
• Positive adhesion – exceeds that of the tensile strength of the host concrete
• Slow cure allows time to erect steel reinforcement and formwork
• Solvent-free – can be used in enclosed locations

Standards compliance: ASTM C881: Type II, grade 2 class E & F.

Specification

Epoxy bonding agent
The bonding agent shall be Nitobond EP, a two-component solvent-free epoxy resin. The two components shall be
differentially pigmented in order to ensure visually that correct mixing has taken place prior to the application.

Design criteria:
Fosroc Fosroc Nitobond EP is designed with an overlay time of 12 hours at 35ºC and 5 hours at 45ºC, making it more suitable for use
where additional steel reinforcement and formwork has to be fitted or where temperatures are high. The minimum
application temperature for Nitobond EP is 5ºC. Consult the local Fosroc office for further information

Instructions for use
Preparation
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 the aggregate by light scrabbling 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 soundness of the substrate should then be assessed by a pull-off test.

Mixing:
Any steel reinforcement and formwork should be prepared, cut to size and shape, and made ready for assembly before
mixing commences. Care should be taken to ensure that Fosroc Nitobond EP is thoroughly mixed. The ‘hardener’ and ‘base’ components should be stirred separately before mixing to disperse any settlement. The entire contents of the ‘hardener’ tin should then be poured into the ‘base’ tin and the two materials thoroughly mixed using a suitable slow-speed drill and mixing paddle for 2 minutes until a fully uniform color is obtained. The sides of the tin should then be scraped, and mixing should continue for a further 2 minutes.

Application:
Fosroc Nitobond EP should be applied as soon as the mixing process has been completed. It should be brush or roller applied to the prepared surfaces, being sure to achieve an unbroken coating across the entire substrate. Nitobond EP should be tacky before the new concrete, screed or mortar is placed.

The maximum overlay times (see Properties) should also be carefully observed. Failure to apply the new concrete, screed or mortar within

the maximum overcoating time will result in Nitobond EP becoming ‘hard’, thus creating a slip plane rather than a bonding action.

If the maximum overlay time is missed, then the Nitobond EP must be mechanically removed, and a fresh application made. The concrete, screed or mortar should then be applied in accordance with the overcoating minimum and maximum
stated above.

As soon as the Nitobond EP has been applied, any required steel reinforcement and/or formwork should be erected and fixed securely in place.

Technical support Fosroc offers a comprehensive technical support service to specifiers, end users and contractors. It is also able to offer on-site technical assistance, an AutoCAD facility and dedicated specification assistance in locations all over the world.

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Fosroc Construction Chemicals In BD manufactures a wide range of products specifically designed for the repair and refurbishment of damaged reinforced concrete. These include hand placed and trowellable repair mortars, fluid micro concretes, chemical resistant epoxy mortars and a comprehensive package of protective coatings. In addition, a wide range of complimentary products are available. These include admixtures, joint sealants, waterproofi ng membranes, grouting, anchoring, and specialised flooring materials. Separate datasheets are available on these products. By name Conplst SP 37, Conplast SP 430 G8, Conplast P505, Cebex 100, Structuro 100, Concure wb, Reebol Emulsion Extra, Reebaklens, Conbextra GP2, Conbextra HES, Conbextra EP10, Lokfix S, Lokfix P, Lokfix E35, Lokfix E55, Lokfix E75,Renderoc FC, Renderoc RG, Renderoc Plug, Superpatch, Nitomortar, Nitowrap EP(GF), Nitowrap EP(CF), Nitowrap CFP, Galvashield, Nitoprime, Nitoflor Hardtop/Hardtop Standard, Nitoflor FC, Nitoflor SL, Trafficguard, Nitocote ET402, Fosroc Nukote, Thioflex 600 GG/PG, Colpor 200, Nitoseal 280, Decofil, Nitoproof 100//120, Nitoproof 600, Brushbond, Brushbond RFX, Brushbond TGP, Spercast SW10/SW20, Supercast SWX, Proofex SM, Proofex Torchseal, Hydroproof, Nitotile GP, Nitotile MPA, Nitobond EP, Nitobond AR/SBR, Nitobond PC, Cemex 327.