All the relevant product data sheets are to be read for additional information like pot life, mixing instructions, surface preparation, ventilation, temperature application limitations, etc.

Preparation of Concrete with Inherent Chloride

All the relevant product data sheets are to be read for additional information like pot life, mixing instructions, surface preparation, ventilation, temperature application limitations, etc.

The agreed area shall be broken out to remove all contaminated concrete. Where the depth corresponds to the depth of concrete cover and thereby exposes reinforcement, breaking out shall continue to expose the full circumference of the steel and to a further depth of 25 mm or as directed by the Contract Administrator. Breaking out shall continue along the reinforcement until non-corroded steel is reached and shall continue 50 mm beyond this point or as directed by the Contract Administrator. Special care shall be exercised to ensure that any reinforcement exposed is not cut or damaged.

It is essential that no chloride contaminated concrete substrate shall be in contact with, or within 10 mm of, the reinforcing bars. In cases where chloride ingress has reached within 10 mm of the reinforcing bars, the concrete shall be broken out to expose the full circumference of the steel and a further depth of 20-30 mm or as directed by the Contract Administrator.

To form a barrier between the chloride-contaminated concrete and the repair mortar, the prepared concrete shall be primed with epidermix 345 and allowed to cure for 8 – 24 hours. This coating is to be imperforate and should any unfilled voids (blowholes) be apparent, shall be filled with epidermix 505 before proceeding.

A second coat of epidermix 345 shall be applied, blinded with dry, dust free, sharp sand and allowed to harden.

Where the use of a.b.e.®’s spalling repair is specified for a repair area, breaking out chloride-contaminated concrete will be limited to areas subject to spalling.

Products Required
  • abe® super brush cleaner
  • epidermix 345
  • epidermix 505
Equipment Needed
  • 100 mm paint brush
  • 100 mm wide putty knife
  • Flat mixing paddle 25 mm wide x 5 mm thick
  • Short nap roller
  • Steel float
  • Steel trowel
  • Suitable 5 litre steel mixing tin
Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavors to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® products, whether or not in accordance with any advice, specification, recommendation, or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.

    Input this code(required): captcha