Protectosil CIT has a 98% active content of organofunctional silane formulation, which penetrates deeply into reinforced concrete and then reacts to produce a bonded hydrophobic lining to the concrete pores and surface of steel rebar.

This treatment reduces rates of any ongoing chloride or carbonation induced corrosion in existing concrete by reducing water content, increasing resistivity and forming a passive layer on the reinforcement, delaying the onset of chloride induced corrosion in new and old concrete.

The absorption rates of water and chlorides are reduced, however the passage of water vapour is unaffected,therefore the treatment allows the moisture within the concrete to diffuse out. The treatment is not affected by UV light and does not produce discolouration of the substrate. Once dried, Protectosil CIT will not be washed out by weathering, tidal action or other intermittent passage of moisture.

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• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

• Penetrates deeply into concrete substrates
• Effective on dense concrete and even moist concrete
• Can be applied directly to embedded steel surfaces
• Chemically binds within concrete pores and to steel rebar
• Inhibits chloride ion induced corrosion of steel reinforcement even when the onset of corrosion has occurred
• Suitable for use on carbonated concrete
• Reduces the absorption of moisture and chloride ions into concrete, increasing resistivity
• Effectively inhibits macro cell (mat to mat) and microcell (along bar) corrosion of steel-reinforced concrete
• Does not change concrete’s appearance
• Simple to apply and no need to wash off residue
• Does not require complex design
• Does not require continuity of reinforcement
• Fast drying and does not wash out
• Can be utilised under Nitoflor and Nitodek systems
• UV Stable so can be left as a clear finish
• Can be applied prior to protective surface finishes (to be confirmed following test work)
• Can act as a primer for Fosroc Dekguard range of anticarbonation coatings
• Please refer to the Product Data Sheet for full details of:
  
  • Specification Clause
  • Properties
  • Application Instructions
  • Storage
  • Health and Safety

Application Notes

• Supplied in 28L, 205L or 1000L containers
• The Fosroc Renderoc range of products may be used for concrete repairs as required prior to application. Shrinkage cracks that are dormant, shallow in depth and with no structural significance can be treated with a multiple coat application of Protectosil CIT, while other cracks should be repaired using the Fosroc Nitofill crack injection resin range prior to application
• Apply the product to the entire concrete surface including any patch repairs
• Apply 2 - 3 coats on dry concrete and 5 - 6 coats for concrete in tidal/splash zones
• Application rate per coat should be 0.20 - 0.28 L/m2, 180 - 250 g/m2. A total of >500g/m2 (>0.56 L/m2 ) must be achieved
• Overcoating time at 20°C: Minimum 15 minutes (surface must be visibly dry before overcoating)
• Should be applied using low-pressure pumping equipment with a wet fan-type spray nozzle
• Alternative methods include roller, brush or pouring (into a crack). Product should not be atomised
• Ensure that sufficient material is applied such that, after application, horizontal surfaces have a shiny, wet appearance for several seconds. Vertical surfaces should exhibit a 30 – 50 cm shiny curtain of liquid
• Equipment should be cleaned with Fosroc Solvent 102 immediately after use. Any spillages should be absorbed with sand or sawdust etc., and disposed of in accordance with local regulations

Limitations

• Application should not commence if substrate temperatures are less than -5°C or above 40°C
• Do not apply if rain is expected within four hours of application or if high winds or other ambient conditions prevent proper application
• There is a possibility of colour change on some types of polymer modified facing materials and white cement. A trial area is recommended
• Should not be applied to substrates which will be subjected to permanent water immersion during service (intermittent / cyclic immersion is acceptable)
• When applying to structures where the onset of corrosion has already taken place, the extent of the reduction in corrosion rate is case by case dependent
• Use appropriate personal protective equipment (overalls, chemical resistant gloves, ventilator, and eye protection)
• Precautions must be taken to control overspray when working adjacent to vehicular roadways, pedestrian walkways, water courses and plant life. Non-absorbent surfaces such as window frames, metal, plastic, window glass should be covered before application
• Protectosil CIT is flammable. Do not expose to naked flames or other sources of ignition. No Smoking. Containers should be tightly sealed when not in use. In the event of fire, extinguish with CO2 or foam