Cemprotec MCI 2020 ... proven technology.
Coating puts the clamp on corrosion
01 April 2000
Flexcrete details the highlights of a new coating that is purpose-designed to drastically cut corrosion on steel-reinforced concrete structures.
Concrete repair and protection specialist Flexcrete of the UK has joined forces with another UK firm Cortec Corporation, to offer the latter's revolutionary impregnation coating, which is said to reduce corrosion on existing steel-reinforced concrete structures by as much as 75 per cent.
''Cemprotec MCI 2020, a clear, waterborne coating based on patented corrosion-inhibiting technology, does not need initial direct contact with steel reinforcement to dramatically reduce corrosion activity,'' says Lisa Holmes of Flexcrete. ''When applied to the surface, it migrates through the pore structure of even the densest, hardened concrete to seek out embedded reinforcement and form a protective monomolecular layer on the re-bars. This barrier inhibits further corrosive attack and neutralises existing corrosion current, thereby helping to prevent future cracking and spalling and significantly extending the service life of the structure to which it is applied.''
''The product,'' she continues, ''is ideal for use on existing buildings, bridges, roads, tunnels, marine structures, car-park decks and other reinforced concrete structures, especially those which are located in aggressive environments subject to high levels of chloride ions from salt water and de-icing salts. This time-proven technology has an international track record, having been laboratory and field tested in some of the world's most hostile environments.
''Cemprotec MCI 2020 is particularly effective when used in combination with Flexcrete's repair mortars and surface coatings for the treatment of concrete suffering deterioration from carbonation or chloride attack, in order to provide multi-functional protection. Sound concrete does not need to be removed for the treatment to be effective and, unlike traditional cathodic protection systems, no costly long-term monitoring is necessary.
''After reinstating concrete, the coating is applied by brush, spray or roller to the surface. Because it is a clear solution, it does not significantly alter the surface appearance of fair-faced concrete. It does not require any curing time, and when used to treat trafficked surfaces such as roads, bridges and decking, Cemprotec MCI 2020 can withstand both pedestrian and vehicular traffic within just 30 minutes of application.''
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