Corrosion protection and bonding primer

Product Description

OMNITEK® CPC is a single component cement based primer for corrosion protection of steel reinforcement bars according to EN 1504-7 and bonding for cement based repair systems.


  • High passivation capacity, effectively stopping active corrosion.
  • High adhesion to steel and perfectly compatible with cement based repair mortars and concrete.
  • One component solution with fast, easy and cost effective application by brush.
  • White color, allows to control the coverage for a complete and durable application.
  • Compatible with all OMNITEK® and BETEC® cement based repair mortars and concrete.
  • CE certified according to EN 1504-7.

Field of Application

  • OMNITEK® CPC is used for:
  • Corrosion protection of steel reinforcement bars according to EN 1504-7.
  • Treatment of reinforcement bars where:
    • Available depth of cover is <10mm
    • Concrete is contaminated with chlorides
    • Cleaned reinforcement is exposed for longer time before repair.
  • Bonding primer for cement based repair systems.


  • CE certified according to EN 1504-7.


1. Preparation of Substrate

  • Substrate preparation has to be according EN 1504-10 part 7.
  • The substrate has to be free from dirt, grease, laitance, loose concrete, loose particles or layers which could adversely affect adhesion.
  • Remove all damaged concrete and prepare substrate by sand or grid blasting, high pressure water jetting, or other methods until base concrete is exposed, offering sufficient roughness (bond) and open pores.
  • Cut all damaged concrete back to a minimum of 20mm behind the exposed and corroded reinforcement steel. The application area needs to be 50mm wider than the edges of the corrosion on the steel reinforcement.
  • Remove all rust and scale from the reinforcement steel by sand or grid blasting, high pressure water jetting, or other methods.
  • The substrate must be pre-wetted with clean water until saturated. The substrate should be damp, but without free standing water. The reinforcement bars can be slightly humid prior to the application of OMNITEK® CPC
  • The substrate must be frost-free and have a cohesion of minimum 1.5 N/mm².

2. Mixing

  • The product is mixed in a suitable container with clean water by using a forced action mixer. Alternatively a paddle mixer, mounted on a slow speed drill can be used. The mixing head must be completely immersed in the powder.
  • Add 4/5 of the required quantity of water into the mixer and mix for 3 minutes. Add the remaining quantity of water. The water content can be varied to obtain the desired consistency. Never use more than the maximum water quantity. Mix for an additional 1 minute until a lump-free, homogeneous mixture is obtained.
  • The mixing time depends on the type of mixer. 4 minutes is the minimum.
  • Once the material is ready mixed, apply immediately. Do not prepare more material than can be used within the open time of the material.


3. Application

  • Apply the mixed material with a soft brush in an even layer of minimum 1 mm thickness to the full circumference of the exposed and prepared concrete and/or reinforcement steel and allow curing for minimum 1 hour depending on ambient temperature.
  • Apply a second layer of minimum 1 mm thickness when the first layer is sufficiently cured.
  • Do not apply the material when the temperature is below 5°C, or expected to fall below 5°C in the next 24h.

4. Curing

  • Curing and setting times will depend on ambient and substrate temperatures.
  • Allow the material to cure for minimum 2 hours before applying a repair mortar.

5. Cleaning and maintenance

  • Mixing and application equipment should be cleaned immediately with clean water. Hardened material needs to be removed mechanically.

6. Special remarks

  • Cementitious materials can lead to incompatibilities under certain conditions in combination with non-ferrous metals (such as aluminium, copper, zinc).
  • Low temperatures delay the setting of the material. High temperatures accelerate the curing and decrease the open time of the material.

Product Properties

Technical Data/Properties(*)

Properties Unit Value*
Consistency [-] Smooth & creamy
Application thickness [mm] 2 layers of ≥1mm/layer
Maximum water quantity [l/10 kg] 2.2
Open time [min] ≈ 30
Application temperature [°C] +5 to +35
Recoat time(***) [hours] ≈ 1
Density [kg/dm3] ≈ 1.21
Consumption(**) [kg/m2/mm] ≈ 1.5
Slant shear adhesion to steel (0,1mm displacement) [kN] 4.5
Corrosion protection [ - ] Pass EN 15183.
Shelf life 12 Months
Stored under cover, clear of the ground, protected from all sources of moisture and frost.
Packaging Plastic pails of 10 kg.
33 pails per pallet (330kg)
Appearance White powder

*)Typical values in production control. All tests were executed under a conditioned temperature of 21°C and 65% RH.
(**)Consumption needs to be estimated by the designer, since it depends on the surface roughness of the concrete and reinforcement bars. A minimum consumption of 2x1mm is needed for effective corrosion protection of reinforcement bars.
(***) Recoating time depends on ambient conditions and should be applied when the first layer is sufficiently cured.

CE Certificate

De Neef Construction Chemicals bvba
Industriepark 8
2220, Heist-op-den-Berg
EN 1504-7
Reinforcement corrosion protection

Health & Safety

OMNITEK® CPC is a product based on cement and can therefore cause burns to skin and eyes, which should be protected during use. Wear gloves and protective eye shields. Wearing a dust mask is advised. Treat splashes to eyes and skin immediately with clean water. Consult a doctor when irritation continues. If accidentally ingested, drink water and consult a doctor. Users must comply with all risk and safety phrases. MSDS’s can be obtained from GCP Applied Technologies or from our website. GISCODE ZP1. | North America Customer Service: 1 877-4AD-MIX1 (1 877-423-6491)

We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right

Betec and OMNITEK are trademarks, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2018 GCP Applied Technologies Inc. All rights reserved.

GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 450, Alpharetta, GA 30009, USA
GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6
This document is only current as of the last updated date stated below and is valid only for use in the United States. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2022-05-06