Chiselling out, exposing, rust removal
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Typical decay of inadequately protected concrete
Exposing corroded steel reinforcement
Cleaning the steel reinforcement by dry blasting with solid blasting media. Degree of rust removal, Sa 2½ to DIN EN 12944-4
KEIM Concretal concrete repair
Concrete repair to the highest standards
Tested for all ZTV-ING applications and having a general technical approval test cer- tificate, this system may be used in both industrial and building construction. The sys- tem components consist of: KEIM Concretal-MKH (corrosion protection and bonding bridge), KEIM Concretal-Mörtel-R (concrete replacement), KEIM Concretal-Feinspachtel (levelling filler).
Two tried and tested systems are available for repairing areas of decay. All products are slightly polymer-modified, cement-bound building materials (PCC) which are made up only with water.
ZTV-Ing tested system structure
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Apply two protective coats of KEIM Concretal-MKH to the derusted reinforcement, allowing at least 3 hours to elapse between coats. Apply first coat immediately after rust removal.
Prewet the broken away surfaces and then vigorously brush in KEIM Concretal-MKH as bonding bridge.
Fill defective areas with mineral KEIM Concretal- Mörtel-R in the moist bonding bridge. Layer thicknesses of 0.5–5 cm are possible, multiple layers must be used from a thickness of approx. 2.5 cm.
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Apply two protective coats of KEIM Concretal-C. Two undiluted coats applied by brush, roller or airless sprayer.
Smooth and texture match with mineral KEIM Concretal- Feinspachtel on a slightly prewetted substrate. Layer thicknesses of 1–4 mm are possible.
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