The anti-corrosive effectiveness of Repar Monosteel results from the high alkalinity and from the superpozzolanic reactivity of components. The specific corrosion inhibitor contained in the compound (DCI - Corrosion Inhibitor Agreฬment Certificate BBA** n.96/3232), conforming to the standard UNI 9747, is based on a reaction which is capable of making unavailable the ferrous ions for the supply of the electrochemical processes of corrosion. The polymeric components of Repar Monosteel also determine further increases in the effectiveness against corrosion, especially vis-à-vis the aggressive attacks arising from chlorides and sulphates. (BBA = British Board of Agreฬment).
Passivating protection treatments of the reinforcement rods in interventions of restoration of works and articles in reinforced concrete, in marine, mountain and industrial environments.
Carefully remove loose rust from the metal surfaces of exposed reinforcing bars by sandblasting or deep brushing until the white metal surface is obtained. This operation is essential to effectively develop the anticorrosive property of Repar Monosteel. Obviously, to block the advance of the carbonation profile in the concrete, it is essential to complete the restoration with the appropriate restoration mortars: thixotropic (Repar line) or pourable (Grout line).
Place about half a litre of water in a bucket, gradually add Repar Monosteel and the additional water needed to achieve a fluid, dense, brushable consistency (about 8 - 10 litres of water for a 25 kg bag). Continue mixing until a smooth, lump-free mixture is obtained. Apply with a brush to the surfaces of the previously prepared reinforcing bars. To prevent the application of the repair mortar from removing the still fresh Repar Monosteel treatment, wait for the product to harden before proceeding with the volumetric restoration. The minimum recommended waiting time is about 6-8 hours with summer temperatures and about 12-16 hours with winter temperatures. Do not apply the product with temperatures below 5°C or if it is expected that the temperature may fall below this value during the first 12 hours of curing.
Compressive strength after 1 day
UNI EN 1015/11
Compressive strength after 28 days
UNI EN 1015/11
Flexural strength at 1 day
UNI EN 1015/11
Flexural strength after 28 days
UNI EN 1015/11
Corrosion resistance
EN 15183
Resistance to the extraction of the steel bars with improved adhesion
EN 15184
Concrete adhesion (direct traction)
UNI EN 1542
Fire resistance
pH
Density
UNI EN 1015-6
Darcy impermeability
Water/binder ratio
From 0.02 to 0.07 kg of Repar Monosteel for each linear metre of steel bar to be treated.
The overflow of the product on the concrete adjacent to the treated rids does not entail any problem.
The general information, along with any instructions and recommendations for use of this product, including in this data sheet and eventually provided verbally or in writing, correspond to the present state of our scientific and practical knowledge.