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MAPEFER 1K

MAPEFER 1K
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IN COMPLIANCE WITH EUROPEAN STANDARD REINFORCEMENT CORROSION PROTECTION One-component corrosion-inhibiting cement mortar for the protection of reinforcing rods WHERE TO USE • orrosion-inhibiting protection of concrete reinforcing C rods. • excellent adhesion to metal; • dhesion improver for concrete repair mortars. A Mapefer 1K meets the requirements defined by EN 1504-9 (“Products and systems for the protection and repair of concrete structures - Definitions, requirements, quality control and evaluation of conformity - General principles for the use of products and systems”) and the minimum requirements claimed by EN 1504-7 (“Reinforcement corrosion protection”). Some application examples Re-alkalising corrosion-inhibiting protection for reinforcing rods in the repair of concrete carried out with shrinkage-compensated mortars from the Mapegrout range or with standard cement mortars modified with synthetic based latex. It can also be used for underground concrete construction. TECHNICAL CHARACTERISTICS Mapefer 1K is a one-component mortar prepared according to a formula developed in the MAPEI research laboratories based on polymers in powderform, cementitious binders and corrosion inhibitors to be applied on reinforcing rods to prevent rust formation. Mixed with water, Mapefer 1K becomes an easily workable mortar that is easy to apply. After hardening, Mapefer 1K is resistant to saline fog according to EN 15183 and impermeable to water and aggressive gases in the atmosphere. The corrosion-inhibiting action of Mapefer 1K is provided through the following principal factors: • igh alkalinity; h RECOMMENDATIONS • Do not further dilute Mapefer 1K with water when the product begins to set. • Do not add cement or aggregates to Mapefer 1K. • Apply Mapefer 1K immediately after sandblasting (do not leave clean rods without protection for a long time). • Do not apply Mapefer 1K when the temperature is below +5°C. APPLICATION PROCEDURE Preparing the rods To ensure that Mapefer 1K is able to develop its corrosion-inhibiting properties efficiently, it is essential that the rods are completely cleaned from rust before the treatment. Sandblasting is recommended to clean the rods down to metal.

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TECHNICAL DATA (typical values) PRODUCT IDENTITY Maximum size of aggregate (mm): Mixing ratio: thixotropic paste Application temperature range: Waiting time between each coat: Waiting time before applying repair mortar: Minimum thickness of Mapefer 1K (mm): Cleaning reinforcing rods 1 00 parts of Mapefer 1K with 20-22 parts of water (1.0-1.1 l of water per 5 kg bag) Demolition of degraded concrete FINAL PERFORMANCE Performance characteristic Minimum requirements according to EN 1504-7 Product performance Bond strength to concrete (MC 0.40 type substrate water/concrete ratio = 0.40)...

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If for logistic reasons this is not possible, vigorous brushing of the metal surface should be carefully and thoroughly carried out to remove all rust. Any additional reinforcement must be treated in the same way. Preparing the product Pour 1.0-1.1 l of clean water into a clean container and, while mixing, slowly disperse 5 kg of Mapefer 1K. Mix the product until a lump-free homogeneous paste is obtained. Once prepared, Mapefer 1K must be applied within 1 hour. Application Apply two coats of Mapefer 1K with a brush. The second coat can be applied approximately 2 hours after the application...

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